godot-docs/classes/class_os.rst

:github_url: hide

.. DO NOT EDIT THIS FILE!!!
.. Generated automatically from Godot engine sources.
.. Generator: https://github.com/godotengine/godot/tree/3.6/doc/tools/make_rst.py.
.. XML source: https://github.com/godotengine/godot/tree/3.6/doc/classes/OS.xml.

.. _class_OS:

OS
==

**Inherits:** :ref:`Object<class_Object>`

Operating System functions.

.. rst-class:: classref-introduction-group

Description
-----------

Operating System functions. OS wraps the most common functionality to communicate with the host operating system, such as the clipboard, video driver, date and time, timers, environment variables, execution of binaries, command line, etc.

.. rst-class:: classref-introduction-group

Tutorials
---------

- `OS Test Demo <https://godotengine.org/asset-library/asset/677>`__

.. rst-class:: classref-reftable-group

Properties
----------

.. table::
   :widths: auto

   +-----------------------------------------------------+-------------------------------------------------------------------------------------------------------+---------------------+
   | :ref:`String<class_String>`                         | :ref:`clipboard<class_OS_property_clipboard>`                                                         | ``""``              |
   +-----------------------------------------------------+-------------------------------------------------------------------------------------------------------+---------------------+
   | :ref:`int<class_int>`                               | :ref:`current_screen<class_OS_property_current_screen>`                                               | ``0``               |
   +-----------------------------------------------------+-------------------------------------------------------------------------------------------------------+---------------------+
   | :ref:`bool<class_bool>`                             | :ref:`delta_smoothing<class_OS_property_delta_smoothing>`                                             | ``true``            |
   +-----------------------------------------------------+-------------------------------------------------------------------------------------------------------+---------------------+
   | :ref:`int<class_int>`                               | :ref:`exit_code<class_OS_property_exit_code>`                                                         | ``0``               |
   +-----------------------------------------------------+-------------------------------------------------------------------------------------------------------+---------------------+
   | :ref:`bool<class_bool>`                             | :ref:`keep_screen_on<class_OS_property_keep_screen_on>`                                               | ``true``            |
   +-----------------------------------------------------+-------------------------------------------------------------------------------------------------------+---------------------+
   | :ref:`bool<class_bool>`                             | :ref:`low_processor_usage_mode<class_OS_property_low_processor_usage_mode>`                           | ``false``           |
   +-----------------------------------------------------+-------------------------------------------------------------------------------------------------------+---------------------+
   | :ref:`int<class_int>`                               | :ref:`low_processor_usage_mode_sleep_usec<class_OS_property_low_processor_usage_mode_sleep_usec>`     | ``6900``            |
   +-----------------------------------------------------+-------------------------------------------------------------------------------------------------------+---------------------+
   | :ref:`Vector2<class_Vector2>`                       | :ref:`max_window_size<class_OS_property_max_window_size>`                                             | ``Vector2( 0, 0 )`` |
   +-----------------------------------------------------+-------------------------------------------------------------------------------------------------------+---------------------+
   | :ref:`Vector2<class_Vector2>`                       | :ref:`min_window_size<class_OS_property_min_window_size>`                                             | ``Vector2( 0, 0 )`` |
   +-----------------------------------------------------+-------------------------------------------------------------------------------------------------------+---------------------+
   | :ref:`ScreenOrientation<enum_OS_ScreenOrientation>` | :ref:`screen_orientation<class_OS_property_screen_orientation>`                                       | ``0``               |
   +-----------------------------------------------------+-------------------------------------------------------------------------------------------------------+---------------------+
   | :ref:`String<class_String>`                         | :ref:`tablet_driver<class_OS_property_tablet_driver>`                                                 | ``""``              |
   +-----------------------------------------------------+-------------------------------------------------------------------------------------------------------+---------------------+
   | :ref:`bool<class_bool>`                             | :ref:`vsync_enabled<class_OS_property_vsync_enabled>`                                                 | ``true``            |
   +-----------------------------------------------------+-------------------------------------------------------------------------------------------------------+---------------------+
   | :ref:`bool<class_bool>`                             | :ref:`vsync_via_compositor<class_OS_property_vsync_via_compositor>`                                   | ``false``           |
   +-----------------------------------------------------+-------------------------------------------------------------------------------------------------------+---------------------+
   | :ref:`bool<class_bool>`                             | :ref:`window_borderless<class_OS_property_window_borderless>`                                         | ``false``           |
   +-----------------------------------------------------+-------------------------------------------------------------------------------------------------------+---------------------+
   | :ref:`bool<class_bool>`                             | :ref:`window_fullscreen<class_OS_property_window_fullscreen>`                                         | ``false``           |
   +-----------------------------------------------------+-------------------------------------------------------------------------------------------------------+---------------------+
   | :ref:`bool<class_bool>`                             | :ref:`window_maximized<class_OS_property_window_maximized>`                                           | ``false``           |
   +-----------------------------------------------------+-------------------------------------------------------------------------------------------------------+---------------------+
   | :ref:`bool<class_bool>`                             | :ref:`window_minimized<class_OS_property_window_minimized>`                                           | ``false``           |
   +-----------------------------------------------------+-------------------------------------------------------------------------------------------------------+---------------------+
   | :ref:`bool<class_bool>`                             | :ref:`window_per_pixel_transparency_enabled<class_OS_property_window_per_pixel_transparency_enabled>` | ``false``           |
   +-----------------------------------------------------+-------------------------------------------------------------------------------------------------------+---------------------+
   | :ref:`Vector2<class_Vector2>`                       | :ref:`window_position<class_OS_property_window_position>`                                             | ``Vector2( 0, 0 )`` |
   +-----------------------------------------------------+-------------------------------------------------------------------------------------------------------+---------------------+
   | :ref:`bool<class_bool>`                             | :ref:`window_resizable<class_OS_property_window_resizable>`                                           | ``true``            |
   +-----------------------------------------------------+-------------------------------------------------------------------------------------------------------+---------------------+
   | :ref:`Vector2<class_Vector2>`                       | :ref:`window_size<class_OS_property_window_size>`                                                     | ``Vector2( 0, 0 )`` |
   +-----------------------------------------------------+-------------------------------------------------------------------------------------------------------+---------------------+

.. rst-class:: classref-reftable-group

Methods
-------

.. table::
   :widths: auto

   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`alert<class_OS_method_alert>` **(** :ref:`String<class_String>` text, :ref:`String<class_String>` title="Alert!" **)**                                                                                                                                                                                         |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                       | :ref:`can_draw<class_OS_method_can_draw>` **(** **)** |const|                                                                                                                                                                                                                                                        |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                       | :ref:`can_use_threads<class_OS_method_can_use_threads>` **(** **)** |const|                                                                                                                                                                                                                                          |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`center_window<class_OS_method_center_window>` **(** **)**                                                                                                                                                                                                                                                      |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`close_midi_inputs<class_OS_method_close_midi_inputs>` **(** **)**                                                                                                                                                                                                                                              |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`crash<class_OS_method_crash>` **(** :ref:`String<class_String>` message **)**                                                                                                                                                                                                                                  |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`delay_msec<class_OS_method_delay_msec>` **(** :ref:`int<class_int>` msec **)** |const|                                                                                                                                                                                                                         |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`delay_usec<class_OS_method_delay_usec>` **(** :ref:`int<class_int>` usec **)** |const|                                                                                                                                                                                                                         |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`dump_memory_to_file<class_OS_method_dump_memory_to_file>` **(** :ref:`String<class_String>` file **)**                                                                                                                                                                                                         |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`dump_resources_to_file<class_OS_method_dump_resources_to_file>` **(** :ref:`String<class_String>` file **)**                                                                                                                                                                                                   |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`execute<class_OS_method_execute>` **(** :ref:`String<class_String>` path, :ref:`PoolStringArray<class_PoolStringArray>` arguments, :ref:`bool<class_bool>` blocking=true, :ref:`Array<class_Array>` output=[  ], :ref:`bool<class_bool>` read_stderr=false, :ref:`bool<class_bool>` open_console=false **)**   |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`find_scancode_from_string<class_OS_method_find_scancode_from_string>` **(** :ref:`String<class_String>` string **)** |const|                                                                                                                                                                                   |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`get_audio_driver_count<class_OS_method_get_audio_driver_count>` **(** **)** |const|                                                                                                                                                                                                                            |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`                   | :ref:`get_audio_driver_name<class_OS_method_get_audio_driver_name>` **(** :ref:`int<class_int>` driver **)** |const|                                                                                                                                                                                                 |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`                   | :ref:`get_cache_dir<class_OS_method_get_cache_dir>` **(** **)** |const|                                                                                                                                                                                                                                              |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`PoolStringArray<class_PoolStringArray>` | :ref:`get_cmdline_args<class_OS_method_get_cmdline_args>` **(** **)**                                                                                                                                                                                                                                                |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`                   | :ref:`get_config_dir<class_OS_method_get_config_dir>` **(** **)** |const|                                                                                                                                                                                                                                            |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`PoolStringArray<class_PoolStringArray>` | :ref:`get_connected_midi_inputs<class_OS_method_get_connected_midi_inputs>` **(** **)**                                                                                                                                                                                                                              |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`VideoDriver<enum_OS_VideoDriver>`       | :ref:`get_current_video_driver<class_OS_method_get_current_video_driver>` **(** **)** |const|                                                                                                                                                                                                                        |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`                   | :ref:`get_data_dir<class_OS_method_get_data_dir>` **(** **)** |const|                                                                                                                                                                                                                                                |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Dictionary<class_Dictionary>`           | :ref:`get_date<class_OS_method_get_date>` **(** :ref:`bool<class_bool>` utc=false **)** |const|                                                                                                                                                                                                                      |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Dictionary<class_Dictionary>`           | :ref:`get_datetime<class_OS_method_get_datetime>` **(** :ref:`bool<class_bool>` utc=false **)** |const|                                                                                                                                                                                                              |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Dictionary<class_Dictionary>`           | :ref:`get_datetime_from_unix_time<class_OS_method_get_datetime_from_unix_time>` **(** :ref:`int<class_int>` unix_time_val **)** |const|                                                                                                                                                                              |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Array<class_Array>`                     | :ref:`get_display_cutouts<class_OS_method_get_display_cutouts>` **(** **)** |const|                                                                                                                                                                                                                                  |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`get_dynamic_memory_usage<class_OS_method_get_dynamic_memory_usage>` **(** **)** |const|                                                                                                                                                                                                                        |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`                   | :ref:`get_environment<class_OS_method_get_environment>` **(** :ref:`String<class_String>` variable **)** |const|                                                                                                                                                                                                     |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`                   | :ref:`get_executable_path<class_OS_method_get_executable_path>` **(** **)** |const|                                                                                                                                                                                                                                  |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`PoolStringArray<class_PoolStringArray>` | :ref:`get_granted_permissions<class_OS_method_get_granted_permissions>` **(** **)** |const|                                                                                                                                                                                                                          |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Vector2<class_Vector2>`                 | :ref:`get_ime_selection<class_OS_method_get_ime_selection>` **(** **)** |const|                                                                                                                                                                                                                                      |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`                   | :ref:`get_ime_text<class_OS_method_get_ime_text>` **(** **)** |const|                                                                                                                                                                                                                                                |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`                   | :ref:`get_latin_keyboard_variant<class_OS_method_get_latin_keyboard_variant>` **(** **)** |const|                                                                                                                                                                                                                    |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`                   | :ref:`get_locale<class_OS_method_get_locale>` **(** **)** |const|                                                                                                                                                                                                                                                    |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`                   | :ref:`get_locale_language<class_OS_method_get_locale_language>` **(** **)** |const|                                                                                                                                                                                                                                  |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`get_main_thread_id<class_OS_method_get_main_thread_id>` **(** **)** |const|                                                                                                                                                                                                                                    |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`                   | :ref:`get_model_name<class_OS_method_get_model_name>` **(** **)** |const|                                                                                                                                                                                                                                            |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`                   | :ref:`get_name<class_OS_method_get_name>` **(** **)** |const|                                                                                                                                                                                                                                                        |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`get_native_handle<class_OS_method_get_native_handle>` **(** :ref:`HandleType<enum_OS_HandleType>` handle_type **)**                                                                                                                                                                                            |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`get_power_percent_left<class_OS_method_get_power_percent_left>` **(** **)**                                                                                                                                                                                                                                    |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`get_power_seconds_left<class_OS_method_get_power_seconds_left>` **(** **)**                                                                                                                                                                                                                                    |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`PowerState<enum_OS_PowerState>`         | :ref:`get_power_state<class_OS_method_get_power_state>` **(** **)**                                                                                                                                                                                                                                                  |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`get_process_id<class_OS_method_get_process_id>` **(** **)** |const|                                                                                                                                                                                                                                            |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`get_processor_count<class_OS_method_get_processor_count>` **(** **)** |const|                                                                                                                                                                                                                                  |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`                   | :ref:`get_processor_name<class_OS_method_get_processor_name>` **(** **)** |const|                                                                                                                                                                                                                                    |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Vector2<class_Vector2>`                 | :ref:`get_real_window_size<class_OS_method_get_real_window_size>` **(** **)** |const|                                                                                                                                                                                                                                |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`PoolStringArray<class_PoolStringArray>` | :ref:`get_restart_on_exit_arguments<class_OS_method_get_restart_on_exit_arguments>` **(** **)** |const|                                                                                                                                                                                                              |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`                   | :ref:`get_scancode_string<class_OS_method_get_scancode_string>` **(** :ref:`int<class_int>` code **)** |const|                                                                                                                                                                                                       |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`get_screen_count<class_OS_method_get_screen_count>` **(** **)** |const|                                                                                                                                                                                                                                        |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`get_screen_dpi<class_OS_method_get_screen_dpi>` **(** :ref:`int<class_int>` screen=-1 **)** |const|                                                                                                                                                                                                            |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`float<class_float>`                     | :ref:`get_screen_max_scale<class_OS_method_get_screen_max_scale>` **(** **)** |const|                                                                                                                                                                                                                                |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Vector2<class_Vector2>`                 | :ref:`get_screen_position<class_OS_method_get_screen_position>` **(** :ref:`int<class_int>` screen=-1 **)** |const|                                                                                                                                                                                                  |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`float<class_float>`                     | :ref:`get_screen_refresh_rate<class_OS_method_get_screen_refresh_rate>` **(** :ref:`int<class_int>` screen=-1 **)** |const|                                                                                                                                                                                          |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`float<class_float>`                     | :ref:`get_screen_scale<class_OS_method_get_screen_scale>` **(** :ref:`int<class_int>` screen=-1 **)** |const|                                                                                                                                                                                                        |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Vector2<class_Vector2>`                 | :ref:`get_screen_size<class_OS_method_get_screen_size>` **(** :ref:`int<class_int>` screen=-1 **)** |const|                                                                                                                                                                                                          |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`get_splash_tick_msec<class_OS_method_get_splash_tick_msec>` **(** **)** |const|                                                                                                                                                                                                                                |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`get_static_memory_peak_usage<class_OS_method_get_static_memory_peak_usage>` **(** **)** |const|                                                                                                                                                                                                                |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`get_static_memory_usage<class_OS_method_get_static_memory_usage>` **(** **)** |const|                                                                                                                                                                                                                          |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`                   | :ref:`get_system_dir<class_OS_method_get_system_dir>` **(** :ref:`SystemDir<enum_OS_SystemDir>` dir, :ref:`bool<class_bool>` shared_storage=true **)** |const|                                                                                                                                                       |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`get_system_time_msecs<class_OS_method_get_system_time_msecs>` **(** **)** |const|                                                                                                                                                                                                                              |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`get_system_time_secs<class_OS_method_get_system_time_secs>` **(** **)** |const|                                                                                                                                                                                                                                |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`get_tablet_driver_count<class_OS_method_get_tablet_driver_count>` **(** **)** |const|                                                                                                                                                                                                                          |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`                   | :ref:`get_tablet_driver_name<class_OS_method_get_tablet_driver_name>` **(** :ref:`int<class_int>` idx **)** |const|                                                                                                                                                                                                  |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`get_thread_caller_id<class_OS_method_get_thread_caller_id>` **(** **)** |const|                                                                                                                                                                                                                                |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`get_ticks_msec<class_OS_method_get_ticks_msec>` **(** **)** |const|                                                                                                                                                                                                                                            |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`get_ticks_usec<class_OS_method_get_ticks_usec>` **(** **)** |const|                                                                                                                                                                                                                                            |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Dictionary<class_Dictionary>`           | :ref:`get_time<class_OS_method_get_time>` **(** :ref:`bool<class_bool>` utc=false **)** |const|                                                                                                                                                                                                                      |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Dictionary<class_Dictionary>`           | :ref:`get_time_zone_info<class_OS_method_get_time_zone_info>` **(** **)** |const|                                                                                                                                                                                                                                    |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`                   | :ref:`get_unique_id<class_OS_method_get_unique_id>` **(** **)** |const|                                                                                                                                                                                                                                              |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`get_unix_time<class_OS_method_get_unix_time>` **(** **)** |const|                                                                                                                                                                                                                                              |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`get_unix_time_from_datetime<class_OS_method_get_unix_time_from_datetime>` **(** :ref:`Dictionary<class_Dictionary>` datetime **)** |const|                                                                                                                                                                     |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`                   | :ref:`get_user_data_dir<class_OS_method_get_user_data_dir>` **(** **)** |const|                                                                                                                                                                                                                                      |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`get_video_driver_count<class_OS_method_get_video_driver_count>` **(** **)** |const|                                                                                                                                                                                                                            |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`                   | :ref:`get_video_driver_name<class_OS_method_get_video_driver_name>` **(** :ref:`VideoDriver<enum_OS_VideoDriver>` driver **)** |const|                                                                                                                                                                               |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`get_virtual_keyboard_height<class_OS_method_get_virtual_keyboard_height>` **(** **)**                                                                                                                                                                                                                          |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Rect2<class_Rect2>`                     | :ref:`get_window_safe_area<class_OS_method_get_window_safe_area>` **(** **)** |const|                                                                                                                                                                                                                                |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`global_menu_add_item<class_OS_method_global_menu_add_item>` **(** :ref:`String<class_String>` menu, :ref:`String<class_String>` label, :ref:`Variant<class_Variant>` id, :ref:`Variant<class_Variant>` meta **)**                                                                                              |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`global_menu_add_separator<class_OS_method_global_menu_add_separator>` **(** :ref:`String<class_String>` menu **)**                                                                                                                                                                                             |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`global_menu_clear<class_OS_method_global_menu_clear>` **(** :ref:`String<class_String>` menu **)**                                                                                                                                                                                                             |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`global_menu_remove_item<class_OS_method_global_menu_remove_item>` **(** :ref:`String<class_String>` menu, :ref:`int<class_int>` idx **)**                                                                                                                                                                      |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                       | :ref:`has_clipboard<class_OS_method_has_clipboard>` **(** **)** |const|                                                                                                                                                                                                                                              |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                       | :ref:`has_environment<class_OS_method_has_environment>` **(** :ref:`String<class_String>` variable **)** |const|                                                                                                                                                                                                     |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                       | :ref:`has_feature<class_OS_method_has_feature>` **(** :ref:`String<class_String>` tag_name **)** |const|                                                                                                                                                                                                             |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                       | :ref:`has_touchscreen_ui_hint<class_OS_method_has_touchscreen_ui_hint>` **(** **)** |const|                                                                                                                                                                                                                          |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                       | :ref:`has_virtual_keyboard<class_OS_method_has_virtual_keyboard>` **(** **)** |const|                                                                                                                                                                                                                                |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`hide_virtual_keyboard<class_OS_method_hide_virtual_keyboard>` **(** **)**                                                                                                                                                                                                                                      |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                       | :ref:`is_debug_build<class_OS_method_is_debug_build>` **(** **)** |const|                                                                                                                                                                                                                                            |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                       | :ref:`is_ok_left_and_cancel_right<class_OS_method_is_ok_left_and_cancel_right>` **(** **)** |const|                                                                                                                                                                                                                  |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                       | :ref:`is_process_running<class_OS_method_is_process_running>` **(** :ref:`int<class_int>` pid **)** |const|                                                                                                                                                                                                          |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                       | :ref:`is_restart_on_exit_set<class_OS_method_is_restart_on_exit_set>` **(** **)** |const|                                                                                                                                                                                                                            |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                       | :ref:`is_scancode_unicode<class_OS_method_is_scancode_unicode>` **(** :ref:`int<class_int>` code **)** |const|                                                                                                                                                                                                       |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                       | :ref:`is_stdout_verbose<class_OS_method_is_stdout_verbose>` **(** **)** |const|                                                                                                                                                                                                                                      |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                       | :ref:`is_userfs_persistent<class_OS_method_is_userfs_persistent>` **(** **)** |const|                                                                                                                                                                                                                                |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                       | :ref:`is_window_always_on_top<class_OS_method_is_window_always_on_top>` **(** **)** |const|                                                                                                                                                                                                                          |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                       | :ref:`is_window_focused<class_OS_method_is_window_focused>` **(** **)** |const|                                                                                                                                                                                                                                      |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`keyboard_get_current_layout<class_OS_method_keyboard_get_current_layout>` **(** **)** |const|                                                                                                                                                                                                                  |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`keyboard_get_layout_count<class_OS_method_keyboard_get_layout_count>` **(** **)** |const|                                                                                                                                                                                                                      |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`                   | :ref:`keyboard_get_layout_language<class_OS_method_keyboard_get_layout_language>` **(** :ref:`int<class_int>` index **)** |const|                                                                                                                                                                                    |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`                   | :ref:`keyboard_get_layout_name<class_OS_method_keyboard_get_layout_name>` **(** :ref:`int<class_int>` index **)** |const|                                                                                                                                                                                            |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                         | :ref:`keyboard_get_scancode_from_physical<class_OS_method_keyboard_get_scancode_from_physical>` **(** :ref:`int<class_int>` scancode **)** |const|                                                                                                                                                                   |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`keyboard_set_current_layout<class_OS_method_keyboard_set_current_layout>` **(** :ref:`int<class_int>` index **)**                                                                                                                                                                                              |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Error<enum_@GlobalScope_Error>`         | :ref:`kill<class_OS_method_kill>` **(** :ref:`int<class_int>` pid **)**                                                                                                                                                                                                                                              |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Error<enum_@GlobalScope_Error>`         | :ref:`move_to_trash<class_OS_method_move_to_trash>` **(** :ref:`String<class_String>` path **)** |const|                                                                                                                                                                                                             |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`move_window_to_foreground<class_OS_method_move_window_to_foreground>` **(** **)**                                                                                                                                                                                                                              |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                       | :ref:`native_video_is_playing<class_OS_method_native_video_is_playing>` **(** **)**                                                                                                                                                                                                                                  |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`native_video_pause<class_OS_method_native_video_pause>` **(** **)**                                                                                                                                                                                                                                            |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Error<enum_@GlobalScope_Error>`         | :ref:`native_video_play<class_OS_method_native_video_play>` **(** :ref:`String<class_String>` path, :ref:`float<class_float>` volume, :ref:`String<class_String>` audio_track, :ref:`String<class_String>` subtitle_track **)**                                                                                      |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`native_video_stop<class_OS_method_native_video_stop>` **(** **)**                                                                                                                                                                                                                                              |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`native_video_unpause<class_OS_method_native_video_unpause>` **(** **)**                                                                                                                                                                                                                                        |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`open_midi_inputs<class_OS_method_open_midi_inputs>` **(** **)**                                                                                                                                                                                                                                                |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`print_all_resources<class_OS_method_print_all_resources>` **(** :ref:`String<class_String>` tofile="" **)**                                                                                                                                                                                                    |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`print_all_textures_by_size<class_OS_method_print_all_textures_by_size>` **(** **)**                                                                                                                                                                                                                            |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`print_resources_by_type<class_OS_method_print_resources_by_type>` **(** :ref:`PoolStringArray<class_PoolStringArray>` types **)**                                                                                                                                                                              |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`print_resources_in_use<class_OS_method_print_resources_in_use>` **(** :ref:`bool<class_bool>` short=false **)**                                                                                                                                                                                                |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`                   | :ref:`read_string_from_stdin<class_OS_method_read_string_from_stdin>` **(** **)**                                                                                                                                                                                                                                    |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`request_attention<class_OS_method_request_attention>` **(** **)**                                                                                                                                                                                                                                              |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                       | :ref:`request_permission<class_OS_method_request_permission>` **(** :ref:`String<class_String>` name **)**                                                                                                                                                                                                           |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                       | :ref:`request_permissions<class_OS_method_request_permissions>` **(** **)**                                                                                                                                                                                                                                          |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                       | :ref:`set_environment<class_OS_method_set_environment>` **(** :ref:`String<class_String>` variable, :ref:`String<class_String>` value **)** |const|                                                                                                                                                                  |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`set_icon<class_OS_method_set_icon>` **(** :ref:`Image<class_Image>` icon **)**                                                                                                                                                                                                                                 |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`set_ime_active<class_OS_method_set_ime_active>` **(** :ref:`bool<class_bool>` active **)**                                                                                                                                                                                                                     |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`set_ime_position<class_OS_method_set_ime_position>` **(** :ref:`Vector2<class_Vector2>` position **)**                                                                                                                                                                                                         |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`set_native_icon<class_OS_method_set_native_icon>` **(** :ref:`String<class_String>` filename **)**                                                                                                                                                                                                             |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`set_restart_on_exit<class_OS_method_set_restart_on_exit>` **(** :ref:`bool<class_bool>` restart, :ref:`PoolStringArray<class_PoolStringArray>` arguments=PoolStringArray(  ) **)**                                                                                                                             |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Error<enum_@GlobalScope_Error>`         | :ref:`set_thread_name<class_OS_method_set_thread_name>` **(** :ref:`String<class_String>` name **)**                                                                                                                                                                                                                 |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`set_use_file_access_save_and_swap<class_OS_method_set_use_file_access_save_and_swap>` **(** :ref:`bool<class_bool>` enabled **)**                                                                                                                                                                              |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`set_window_always_on_top<class_OS_method_set_window_always_on_top>` **(** :ref:`bool<class_bool>` enabled **)**                                                                                                                                                                                                |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`set_window_mouse_passthrough<class_OS_method_set_window_mouse_passthrough>` **(** :ref:`PoolVector2Array<class_PoolVector2Array>` region **)**                                                                                                                                                                 |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`set_window_title<class_OS_method_set_window_title>` **(** :ref:`String<class_String>` title **)**                                                                                                                                                                                                              |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Error<enum_@GlobalScope_Error>`         | :ref:`shell_open<class_OS_method_shell_open>` **(** :ref:`String<class_String>` uri **)**                                                                                                                                                                                                                            |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`show_virtual_keyboard<class_OS_method_show_virtual_keyboard>` **(** :ref:`String<class_String>` existing_text="", :ref:`bool<class_bool>` multiline=false **)**                                                                                                                                                |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`show_virtual_keyboard_type<class_OS_method_show_virtual_keyboard_type>` **(** :ref:`String<class_String>` existing_text="", :ref:`VirtualKeyboardType<enum_OS_VirtualKeyboardType>` type=0 **)**                                                                                                               |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Array<class_Array>`                     | :ref:`tts_get_voices<class_OS_method_tts_get_voices>` **(** **)** |const|                                                                                                                                                                                                                                            |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`PoolStringArray<class_PoolStringArray>` | :ref:`tts_get_voices_for_language<class_OS_method_tts_get_voices_for_language>` **(** :ref:`String<class_String>` language **)** |const|                                                                                                                                                                             |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                       | :ref:`tts_is_paused<class_OS_method_tts_is_paused>` **(** **)** |const|                                                                                                                                                                                                                                              |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                       | :ref:`tts_is_speaking<class_OS_method_tts_is_speaking>` **(** **)** |const|                                                                                                                                                                                                                                          |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`tts_pause<class_OS_method_tts_pause>` **(** **)**                                                                                                                                                                                                                                                              |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`tts_resume<class_OS_method_tts_resume>` **(** **)**                                                                                                                                                                                                                                                            |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`tts_set_utterance_callback<class_OS_method_tts_set_utterance_callback>` **(** :ref:`TTSUtteranceEvent<enum_OS_TTSUtteranceEvent>` event, :ref:`Object<class_Object>` object, :ref:`String<class_String>` callback **)**                                                                                        |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`tts_speak<class_OS_method_tts_speak>` **(** :ref:`String<class_String>` text, :ref:`String<class_String>` voice, :ref:`int<class_int>` volume=50, :ref:`float<class_float>` pitch=1.0, :ref:`float<class_float>` rate=1.0, :ref:`int<class_int>` utterance_id=0, :ref:`bool<class_bool>` interrupt=false **)** |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                          | :ref:`tts_stop<class_OS_method_tts_stop>` **(** **)**                                                                                                                                                                                                                                                                |
   +-----------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

.. rst-class:: classref-section-separator

----

.. rst-class:: classref-descriptions-group

Enumerations
------------

.. _enum_OS_VideoDriver:

.. rst-class:: classref-enumeration

enum **VideoDriver**:

.. _class_OS_constant_VIDEO_DRIVER_GLES2:

.. rst-class:: classref-enumeration-constant

:ref:`VideoDriver<enum_OS_VideoDriver>` **VIDEO_DRIVER_GLES2** = ``1``

The GLES2 rendering backend. It uses OpenGL ES 2.0 on mobile devices, OpenGL 2.1 on desktop platforms and WebGL 1.0 on the web.

.. _class_OS_constant_VIDEO_DRIVER_GLES3:

.. rst-class:: classref-enumeration-constant

:ref:`VideoDriver<enum_OS_VideoDriver>` **VIDEO_DRIVER_GLES3** = ``0``

The GLES3 rendering backend. It uses OpenGL ES 3.0 on mobile devices, OpenGL 3.3 on desktop platforms and WebGL 2.0 on the web.

.. rst-class:: classref-item-separator

----

.. _enum_OS_Weekday:

.. rst-class:: classref-enumeration

enum **Weekday**:

.. _class_OS_constant_DAY_SUNDAY:

.. rst-class:: classref-enumeration-constant

:ref:`Weekday<enum_OS_Weekday>` **DAY_SUNDAY** = ``0``

Sunday.

.. _class_OS_constant_DAY_MONDAY:

.. rst-class:: classref-enumeration-constant

:ref:`Weekday<enum_OS_Weekday>` **DAY_MONDAY** = ``1``

Monday.

.. _class_OS_constant_DAY_TUESDAY:

.. rst-class:: classref-enumeration-constant

:ref:`Weekday<enum_OS_Weekday>` **DAY_TUESDAY** = ``2``

Tuesday.

.. _class_OS_constant_DAY_WEDNESDAY:

.. rst-class:: classref-enumeration-constant

:ref:`Weekday<enum_OS_Weekday>` **DAY_WEDNESDAY** = ``3``

Wednesday.

.. _class_OS_constant_DAY_THURSDAY:

.. rst-class:: classref-enumeration-constant

:ref:`Weekday<enum_OS_Weekday>` **DAY_THURSDAY** = ``4``

Thursday.

.. _class_OS_constant_DAY_FRIDAY:

.. rst-class:: classref-enumeration-constant

:ref:`Weekday<enum_OS_Weekday>` **DAY_FRIDAY** = ``5``

Friday.

.. _class_OS_constant_DAY_SATURDAY:

.. rst-class:: classref-enumeration-constant

:ref:`Weekday<enum_OS_Weekday>` **DAY_SATURDAY** = ``6``

Saturday.

.. rst-class:: classref-item-separator

----

.. _enum_OS_Month:

.. rst-class:: classref-enumeration

enum **Month**:

.. _class_OS_constant_MONTH_JANUARY:

.. rst-class:: classref-enumeration-constant

:ref:`Month<enum_OS_Month>` **MONTH_JANUARY** = ``1``

January.

.. _class_OS_constant_MONTH_FEBRUARY:

.. rst-class:: classref-enumeration-constant

:ref:`Month<enum_OS_Month>` **MONTH_FEBRUARY** = ``2``

February.

.. _class_OS_constant_MONTH_MARCH:

.. rst-class:: classref-enumeration-constant

:ref:`Month<enum_OS_Month>` **MONTH_MARCH** = ``3``

March.

.. _class_OS_constant_MONTH_APRIL:

.. rst-class:: classref-enumeration-constant

:ref:`Month<enum_OS_Month>` **MONTH_APRIL** = ``4``

April.

.. _class_OS_constant_MONTH_MAY:

.. rst-class:: classref-enumeration-constant

:ref:`Month<enum_OS_Month>` **MONTH_MAY** = ``5``

May.

.. _class_OS_constant_MONTH_JUNE:

.. rst-class:: classref-enumeration-constant

:ref:`Month<enum_OS_Month>` **MONTH_JUNE** = ``6``

June.

.. _class_OS_constant_MONTH_JULY:

.. rst-class:: classref-enumeration-constant

:ref:`Month<enum_OS_Month>` **MONTH_JULY** = ``7``

July.

.. _class_OS_constant_MONTH_AUGUST:

.. rst-class:: classref-enumeration-constant

:ref:`Month<enum_OS_Month>` **MONTH_AUGUST** = ``8``

August.

.. _class_OS_constant_MONTH_SEPTEMBER:

.. rst-class:: classref-enumeration-constant

:ref:`Month<enum_OS_Month>` **MONTH_SEPTEMBER** = ``9``

September.

.. _class_OS_constant_MONTH_OCTOBER:

.. rst-class:: classref-enumeration-constant

:ref:`Month<enum_OS_Month>` **MONTH_OCTOBER** = ``10``

October.

.. _class_OS_constant_MONTH_NOVEMBER:

.. rst-class:: classref-enumeration-constant

:ref:`Month<enum_OS_Month>` **MONTH_NOVEMBER** = ``11``

November.

.. _class_OS_constant_MONTH_DECEMBER:

.. rst-class:: classref-enumeration-constant

:ref:`Month<enum_OS_Month>` **MONTH_DECEMBER** = ``12``

December.

.. rst-class:: classref-item-separator

----

.. _enum_OS_HandleType:

.. rst-class:: classref-enumeration

enum **HandleType**:

.. _class_OS_constant_APPLICATION_HANDLE:

.. rst-class:: classref-enumeration-constant

:ref:`HandleType<enum_OS_HandleType>` **APPLICATION_HANDLE** = ``0``

Application handle:

- Windows: ``HINSTANCE`` of the application

- MacOS: ``NSApplication*`` of the application (not yet implemented)

- Android: ``JNIEnv*`` of the application (not yet implemented)

.. _class_OS_constant_DISPLAY_HANDLE:

.. rst-class:: classref-enumeration-constant

:ref:`HandleType<enum_OS_HandleType>` **DISPLAY_HANDLE** = ``1``

Display handle:

- Linux: ``X11::Display*`` for the display

.. _class_OS_constant_WINDOW_HANDLE:

.. rst-class:: classref-enumeration-constant

:ref:`HandleType<enum_OS_HandleType>` **WINDOW_HANDLE** = ``2``

Window handle:

- Windows: ``HWND`` of the main window

- Linux: ``X11::Window*`` of the main window

- MacOS: ``NSWindow*`` of the main window (not yet implemented)

- Android: ``jObject`` the main android activity (not yet implemented)

.. _class_OS_constant_WINDOW_VIEW:

.. rst-class:: classref-enumeration-constant

:ref:`HandleType<enum_OS_HandleType>` **WINDOW_VIEW** = ``3``

Window view:

- Windows: ``HDC`` of the main window drawing context

- MacOS: ``NSView*`` of the main windows view (not yet implemented)

.. _class_OS_constant_OPENGL_CONTEXT:

.. rst-class:: classref-enumeration-constant

:ref:`HandleType<enum_OS_HandleType>` **OPENGL_CONTEXT** = ``4``

OpenGL Context:

- Windows: ``HGLRC``\ 

- Linux: ``X11::GLXContext``\ 

- MacOS: ``NSOpenGLContext*`` (not yet implemented)

.. rst-class:: classref-item-separator

----

.. _enum_OS_ScreenOrientation:

.. rst-class:: classref-enumeration

enum **ScreenOrientation**:

.. _class_OS_constant_SCREEN_ORIENTATION_LANDSCAPE:

.. rst-class:: classref-enumeration-constant

:ref:`ScreenOrientation<enum_OS_ScreenOrientation>` **SCREEN_ORIENTATION_LANDSCAPE** = ``0``

Landscape screen orientation.

.. _class_OS_constant_SCREEN_ORIENTATION_PORTRAIT:

.. rst-class:: classref-enumeration-constant

:ref:`ScreenOrientation<enum_OS_ScreenOrientation>` **SCREEN_ORIENTATION_PORTRAIT** = ``1``

Portrait screen orientation.

.. _class_OS_constant_SCREEN_ORIENTATION_REVERSE_LANDSCAPE:

.. rst-class:: classref-enumeration-constant

:ref:`ScreenOrientation<enum_OS_ScreenOrientation>` **SCREEN_ORIENTATION_REVERSE_LANDSCAPE** = ``2``

Reverse landscape screen orientation.

.. _class_OS_constant_SCREEN_ORIENTATION_REVERSE_PORTRAIT:

.. rst-class:: classref-enumeration-constant

:ref:`ScreenOrientation<enum_OS_ScreenOrientation>` **SCREEN_ORIENTATION_REVERSE_PORTRAIT** = ``3``

Reverse portrait screen orientation.

.. _class_OS_constant_SCREEN_ORIENTATION_SENSOR_LANDSCAPE:

.. rst-class:: classref-enumeration-constant

:ref:`ScreenOrientation<enum_OS_ScreenOrientation>` **SCREEN_ORIENTATION_SENSOR_LANDSCAPE** = ``4``

Uses landscape or reverse landscape based on the hardware sensor.

.. _class_OS_constant_SCREEN_ORIENTATION_SENSOR_PORTRAIT:

.. rst-class:: classref-enumeration-constant

:ref:`ScreenOrientation<enum_OS_ScreenOrientation>` **SCREEN_ORIENTATION_SENSOR_PORTRAIT** = ``5``

Uses portrait or reverse portrait based on the hardware sensor.

.. _class_OS_constant_SCREEN_ORIENTATION_SENSOR:

.. rst-class:: classref-enumeration-constant

:ref:`ScreenOrientation<enum_OS_ScreenOrientation>` **SCREEN_ORIENTATION_SENSOR** = ``6``

Uses most suitable orientation based on the hardware sensor.

.. rst-class:: classref-item-separator

----

.. _enum_OS_VirtualKeyboardType:

.. rst-class:: classref-enumeration

enum **VirtualKeyboardType**:

.. _class_OS_constant_KEYBOARD_TYPE_DEFAULT:

.. rst-class:: classref-enumeration-constant

:ref:`VirtualKeyboardType<enum_OS_VirtualKeyboardType>` **KEYBOARD_TYPE_DEFAULT** = ``0``

Default text virtual keyboard.

.. _class_OS_constant_KEYBOARD_TYPE_MULTILINE:

.. rst-class:: classref-enumeration-constant

:ref:`VirtualKeyboardType<enum_OS_VirtualKeyboardType>` **KEYBOARD_TYPE_MULTILINE** = ``1``

Multiline virtual keyboard.

.. _class_OS_constant_KEYBOARD_TYPE_NUMBER:

.. rst-class:: classref-enumeration-constant

:ref:`VirtualKeyboardType<enum_OS_VirtualKeyboardType>` **KEYBOARD_TYPE_NUMBER** = ``2``

Virtual number keypad, useful for PIN entry.

.. _class_OS_constant_KEYBOARD_TYPE_NUMBER_DECIMAL:

.. rst-class:: classref-enumeration-constant

:ref:`VirtualKeyboardType<enum_OS_VirtualKeyboardType>` **KEYBOARD_TYPE_NUMBER_DECIMAL** = ``3``

Virtual number keypad, useful for entering fractional numbers.

.. _class_OS_constant_KEYBOARD_TYPE_PHONE:

.. rst-class:: classref-enumeration-constant

:ref:`VirtualKeyboardType<enum_OS_VirtualKeyboardType>` **KEYBOARD_TYPE_PHONE** = ``4``

Virtual phone number keypad.

.. _class_OS_constant_KEYBOARD_TYPE_EMAIL_ADDRESS:

.. rst-class:: classref-enumeration-constant

:ref:`VirtualKeyboardType<enum_OS_VirtualKeyboardType>` **KEYBOARD_TYPE_EMAIL_ADDRESS** = ``5``

Virtual keyboard with additional keys to assist with typing email addresses.

.. _class_OS_constant_KEYBOARD_TYPE_PASSWORD:

.. rst-class:: classref-enumeration-constant

:ref:`VirtualKeyboardType<enum_OS_VirtualKeyboardType>` **KEYBOARD_TYPE_PASSWORD** = ``6``

Virtual keyboard for entering a password. On most platforms, this should disable autocomplete and autocapitalization.

\ **Note:** This is not supported on HTML5 or below iOS version 11.0. Instead, this will behave identically to :ref:`KEYBOARD_TYPE_DEFAULT<class_OS_constant_KEYBOARD_TYPE_DEFAULT>`.

.. _class_OS_constant_KEYBOARD_TYPE_URL:

.. rst-class:: classref-enumeration-constant

:ref:`VirtualKeyboardType<enum_OS_VirtualKeyboardType>` **KEYBOARD_TYPE_URL** = ``7``

Virtual keyboard with additional keys to assist with typing URLs.

.. rst-class:: classref-item-separator

----

.. _enum_OS_SystemDir:

.. rst-class:: classref-enumeration

enum **SystemDir**:

.. _class_OS_constant_SYSTEM_DIR_DESKTOP:

.. rst-class:: classref-enumeration-constant

:ref:`SystemDir<enum_OS_SystemDir>` **SYSTEM_DIR_DESKTOP** = ``0``

Desktop directory path.

.. _class_OS_constant_SYSTEM_DIR_DCIM:

.. rst-class:: classref-enumeration-constant

:ref:`SystemDir<enum_OS_SystemDir>` **SYSTEM_DIR_DCIM** = ``1``

DCIM (Digital Camera Images) directory path.

.. _class_OS_constant_SYSTEM_DIR_DOCUMENTS:

.. rst-class:: classref-enumeration-constant

:ref:`SystemDir<enum_OS_SystemDir>` **SYSTEM_DIR_DOCUMENTS** = ``2``

Documents directory path.

.. _class_OS_constant_SYSTEM_DIR_DOWNLOADS:

.. rst-class:: classref-enumeration-constant

:ref:`SystemDir<enum_OS_SystemDir>` **SYSTEM_DIR_DOWNLOADS** = ``3``

Downloads directory path.

.. _class_OS_constant_SYSTEM_DIR_MOVIES:

.. rst-class:: classref-enumeration-constant

:ref:`SystemDir<enum_OS_SystemDir>` **SYSTEM_DIR_MOVIES** = ``4``

Movies directory path.

.. _class_OS_constant_SYSTEM_DIR_MUSIC:

.. rst-class:: classref-enumeration-constant

:ref:`SystemDir<enum_OS_SystemDir>` **SYSTEM_DIR_MUSIC** = ``5``

Music directory path.

.. _class_OS_constant_SYSTEM_DIR_PICTURES:

.. rst-class:: classref-enumeration-constant

:ref:`SystemDir<enum_OS_SystemDir>` **SYSTEM_DIR_PICTURES** = ``6``

Pictures directory path.

.. _class_OS_constant_SYSTEM_DIR_RINGTONES:

.. rst-class:: classref-enumeration-constant

:ref:`SystemDir<enum_OS_SystemDir>` **SYSTEM_DIR_RINGTONES** = ``7``

Ringtones directory path.

.. rst-class:: classref-item-separator

----

.. _enum_OS_PowerState:

.. rst-class:: classref-enumeration

enum **PowerState**:

.. _class_OS_constant_POWERSTATE_UNKNOWN:

.. rst-class:: classref-enumeration-constant

:ref:`PowerState<enum_OS_PowerState>` **POWERSTATE_UNKNOWN** = ``0``

Unknown powerstate.

.. _class_OS_constant_POWERSTATE_ON_BATTERY:

.. rst-class:: classref-enumeration-constant

:ref:`PowerState<enum_OS_PowerState>` **POWERSTATE_ON_BATTERY** = ``1``

Unplugged, running on battery.

.. _class_OS_constant_POWERSTATE_NO_BATTERY:

.. rst-class:: classref-enumeration-constant

:ref:`PowerState<enum_OS_PowerState>` **POWERSTATE_NO_BATTERY** = ``2``

Plugged in, no battery available.

.. _class_OS_constant_POWERSTATE_CHARGING:

.. rst-class:: classref-enumeration-constant

:ref:`PowerState<enum_OS_PowerState>` **POWERSTATE_CHARGING** = ``3``

Plugged in, battery charging.

.. _class_OS_constant_POWERSTATE_CHARGED:

.. rst-class:: classref-enumeration-constant

:ref:`PowerState<enum_OS_PowerState>` **POWERSTATE_CHARGED** = ``4``

Plugged in, battery fully charged.

.. rst-class:: classref-item-separator

----

.. _enum_OS_TTSUtteranceEvent:

.. rst-class:: classref-enumeration

enum **TTSUtteranceEvent**:

.. _class_OS_constant_TTS_UTTERANCE_STARTED:

.. rst-class:: classref-enumeration-constant

:ref:`TTSUtteranceEvent<enum_OS_TTSUtteranceEvent>` **TTS_UTTERANCE_STARTED** = ``0``

Utterance has begun to be spoken.

.. _class_OS_constant_TTS_UTTERANCE_ENDED:

.. rst-class:: classref-enumeration-constant

:ref:`TTSUtteranceEvent<enum_OS_TTSUtteranceEvent>` **TTS_UTTERANCE_ENDED** = ``1``

Utterance was successfully finished.

.. _class_OS_constant_TTS_UTTERANCE_CANCELED:

.. rst-class:: classref-enumeration-constant

:ref:`TTSUtteranceEvent<enum_OS_TTSUtteranceEvent>` **TTS_UTTERANCE_CANCELED** = ``2``

Utterance was canceled, or TTS service was unable to process it.

.. _class_OS_constant_TTS_UTTERANCE_BOUNDARY:

.. rst-class:: classref-enumeration-constant

:ref:`TTSUtteranceEvent<enum_OS_TTSUtteranceEvent>` **TTS_UTTERANCE_BOUNDARY** = ``3``

Utterance reached a word or sentence boundary.

.. rst-class:: classref-section-separator

----

.. rst-class:: classref-descriptions-group

Property Descriptions
---------------------

.. _class_OS_property_clipboard:

.. rst-class:: classref-property

:ref:`String<class_String>` **clipboard** = ``""``

.. rst-class:: classref-property-setget

- void **set_clipboard** **(** :ref:`String<class_String>` value **)**
- :ref:`String<class_String>` **get_clipboard** **(** **)**

The clipboard from the host OS. Might be unavailable on some platforms.

.. rst-class:: classref-item-separator

----

.. _class_OS_property_current_screen:

.. rst-class:: classref-property

:ref:`int<class_int>` **current_screen** = ``0``

.. rst-class:: classref-property-setget

- void **set_current_screen** **(** :ref:`int<class_int>` value **)**
- :ref:`int<class_int>` **get_current_screen** **(** **)**

The current screen index (starting from 0).

.. rst-class:: classref-item-separator

----

.. _class_OS_property_delta_smoothing:

.. rst-class:: classref-property

:ref:`bool<class_bool>` **delta_smoothing** = ``true``

.. rst-class:: classref-property-setget

- void **set_delta_smoothing** **(** :ref:`bool<class_bool>` value **)**
- :ref:`bool<class_bool>` **is_delta_smoothing_enabled** **(** **)**

If ``true``, the engine filters the time delta measured between each frame, and attempts to compensate for random variation. This will only operate on systems where V-Sync is active.

.. rst-class:: classref-item-separator

----

.. _class_OS_property_exit_code:

.. rst-class:: classref-property

:ref:`int<class_int>` **exit_code** = ``0``

.. rst-class:: classref-property-setget

- void **set_exit_code** **(** :ref:`int<class_int>` value **)**
- :ref:`int<class_int>` **get_exit_code** **(** **)**

The exit code passed to the OS when the main loop exits. By convention, an exit code of ``0`` indicates success whereas a non-zero exit code indicates an error. For portability reasons, the exit code should be set between 0 and 125 (inclusive).

\ **Note:** This value will be ignored if using :ref:`SceneTree.quit<class_SceneTree_method_quit>` with an ``exit_code`` argument passed.

.. rst-class:: classref-item-separator

----

.. _class_OS_property_keep_screen_on:

.. rst-class:: classref-property

:ref:`bool<class_bool>` **keep_screen_on** = ``true``

.. rst-class:: classref-property-setget

- void **set_keep_screen_on** **(** :ref:`bool<class_bool>` value **)**
- :ref:`bool<class_bool>` **is_keep_screen_on** **(** **)**

If ``true``, the engine tries to keep the screen on while the game is running. Useful on mobile.

.. rst-class:: classref-item-separator

----

.. _class_OS_property_low_processor_usage_mode:

.. rst-class:: classref-property

:ref:`bool<class_bool>` **low_processor_usage_mode** = ``false``

.. rst-class:: classref-property-setget

- void **set_low_processor_usage_mode** **(** :ref:`bool<class_bool>` value **)**
- :ref:`bool<class_bool>` **is_in_low_processor_usage_mode** **(** **)**

If ``true``, the engine optimizes for low processor usage by only refreshing the screen if needed. Can improve battery consumption on mobile.

.. rst-class:: classref-item-separator

----

.. _class_OS_property_low_processor_usage_mode_sleep_usec:

.. rst-class:: classref-property

:ref:`int<class_int>` **low_processor_usage_mode_sleep_usec** = ``6900``

.. rst-class:: classref-property-setget

- void **set_low_processor_usage_mode_sleep_usec** **(** :ref:`int<class_int>` value **)**
- :ref:`int<class_int>` **get_low_processor_usage_mode_sleep_usec** **(** **)**

The amount of sleeping between frames when the low-processor usage mode is enabled (in microseconds). Higher values will result in lower CPU usage.

.. rst-class:: classref-item-separator

----

.. _class_OS_property_max_window_size:

.. rst-class:: classref-property

:ref:`Vector2<class_Vector2>` **max_window_size** = ``Vector2( 0, 0 )``

.. rst-class:: classref-property-setget

- void **set_max_window_size** **(** :ref:`Vector2<class_Vector2>` value **)**
- :ref:`Vector2<class_Vector2>` **get_max_window_size** **(** **)**

The maximum size of the window (without counting window manager decorations). Does not affect fullscreen mode. Set to ``(0, 0)`` to reset to the system default value.

.. rst-class:: classref-item-separator

----

.. _class_OS_property_min_window_size:

.. rst-class:: classref-property

:ref:`Vector2<class_Vector2>` **min_window_size** = ``Vector2( 0, 0 )``

.. rst-class:: classref-property-setget

- void **set_min_window_size** **(** :ref:`Vector2<class_Vector2>` value **)**
- :ref:`Vector2<class_Vector2>` **get_min_window_size** **(** **)**

The minimum size of the window in pixels (without counting window manager decorations). Does not affect fullscreen mode. Set to ``(0, 0)`` to reset to the system's default value.

\ **Note:** By default, the project window has a minimum size of ``Vector2(64, 64)``. This prevents issues that can arise when the window is resized to a near-zero size.

.. rst-class:: classref-item-separator

----

.. _class_OS_property_screen_orientation:

.. rst-class:: classref-property

:ref:`ScreenOrientation<enum_OS_ScreenOrientation>` **screen_orientation** = ``0``

.. rst-class:: classref-property-setget

- void **set_screen_orientation** **(** :ref:`ScreenOrientation<enum_OS_ScreenOrientation>` value **)**
- :ref:`ScreenOrientation<enum_OS_ScreenOrientation>` **get_screen_orientation** **(** **)**

The current screen orientation.

.. rst-class:: classref-item-separator

----

.. _class_OS_property_tablet_driver:

.. rst-class:: classref-property

:ref:`String<class_String>` **tablet_driver** = ``""``

.. rst-class:: classref-property-setget

- void **set_current_tablet_driver** **(** :ref:`String<class_String>` value **)**
- :ref:`String<class_String>` **get_current_tablet_driver** **(** **)**

The current tablet driver in use.

.. rst-class:: classref-item-separator

----

.. _class_OS_property_vsync_enabled:

.. rst-class:: classref-property

:ref:`bool<class_bool>` **vsync_enabled** = ``true``

.. rst-class:: classref-property-setget

- void **set_use_vsync** **(** :ref:`bool<class_bool>` value **)**
- :ref:`bool<class_bool>` **is_vsync_enabled** **(** **)**

If ``true``, vertical synchronization (Vsync) is enabled.

.. rst-class:: classref-item-separator

----

.. _class_OS_property_vsync_via_compositor:

.. rst-class:: classref-property

:ref:`bool<class_bool>` **vsync_via_compositor** = ``false``

.. rst-class:: classref-property-setget

- void **set_vsync_via_compositor** **(** :ref:`bool<class_bool>` value **)**
- :ref:`bool<class_bool>` **is_vsync_via_compositor_enabled** **(** **)**

If ``true`` and ``vsync_enabled`` is true, the operating system's window compositor will be used for vsync when the compositor is enabled and the game is in windowed mode.

\ **Note:** This option is experimental and meant to alleviate stutter experienced by some users. However, some users have experienced a Vsync framerate halving (e.g. from 60 FPS to 30 FPS) when using it.

\ **Note:** This property is only implemented on Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_property_window_borderless:

.. rst-class:: classref-property

:ref:`bool<class_bool>` **window_borderless** = ``false``

.. rst-class:: classref-property-setget

- void **set_borderless_window** **(** :ref:`bool<class_bool>` value **)**
- :ref:`bool<class_bool>` **get_borderless_window** **(** **)**

If ``true``, removes the window frame.

\ **Note:** Setting ``window_borderless`` to ``false`` disables per-pixel transparency.

.. rst-class:: classref-item-separator

----

.. _class_OS_property_window_fullscreen:

.. rst-class:: classref-property

:ref:`bool<class_bool>` **window_fullscreen** = ``false``

.. rst-class:: classref-property-setget

- void **set_window_fullscreen** **(** :ref:`bool<class_bool>` value **)**
- :ref:`bool<class_bool>` **is_window_fullscreen** **(** **)**

If ``true``, the window is fullscreen.

.. rst-class:: classref-item-separator

----

.. _class_OS_property_window_maximized:

.. rst-class:: classref-property

:ref:`bool<class_bool>` **window_maximized** = ``false``

.. rst-class:: classref-property-setget

- void **set_window_maximized** **(** :ref:`bool<class_bool>` value **)**
- :ref:`bool<class_bool>` **is_window_maximized** **(** **)**

If ``true``, the window is maximized.

.. rst-class:: classref-item-separator

----

.. _class_OS_property_window_minimized:

.. rst-class:: classref-property

:ref:`bool<class_bool>` **window_minimized** = ``false``

.. rst-class:: classref-property-setget

- void **set_window_minimized** **(** :ref:`bool<class_bool>` value **)**
- :ref:`bool<class_bool>` **is_window_minimized** **(** **)**

If ``true``, the window is minimized.

.. rst-class:: classref-item-separator

----

.. _class_OS_property_window_per_pixel_transparency_enabled:

.. rst-class:: classref-property

:ref:`bool<class_bool>` **window_per_pixel_transparency_enabled** = ``false``

.. rst-class:: classref-property-setget

- void **set_window_per_pixel_transparency_enabled** **(** :ref:`bool<class_bool>` value **)**
- :ref:`bool<class_bool>` **get_window_per_pixel_transparency_enabled** **(** **)**

If ``true``, the window background is transparent and the window frame is removed.

Enable :ref:`ProjectSettings.rendering/viewport/transparent_background<class_ProjectSettings_property_rendering/viewport/transparent_background>` or call ``get_tree().get_root().set_transparent_background(true)`` to disable background rendering on the root :ref:`Viewport<class_Viewport>`.

\ **Note:** This property has no effect if :ref:`ProjectSettings.display/window/per_pixel_transparency/allowed<class_ProjectSettings_property_display/window/per_pixel_transparency/allowed>` setting is disabled.

\ **Note:** This property is implemented on HTML5, Linux, macOS, Windows, and Android. It can't be changed at runtime for Android. Use :ref:`ProjectSettings.display/window/per_pixel_transparency/enabled<class_ProjectSettings_property_display/window/per_pixel_transparency/enabled>` to set it at startup instead.

.. rst-class:: classref-item-separator

----

.. _class_OS_property_window_position:

.. rst-class:: classref-property

:ref:`Vector2<class_Vector2>` **window_position** = ``Vector2( 0, 0 )``

.. rst-class:: classref-property-setget

- void **set_window_position** **(** :ref:`Vector2<class_Vector2>` value **)**
- :ref:`Vector2<class_Vector2>` **get_window_position** **(** **)**

The window position relative to the screen, the origin is the top left corner, +Y axis goes to the bottom and +X axis goes to the right.

.. rst-class:: classref-item-separator

----

.. _class_OS_property_window_resizable:

.. rst-class:: classref-property

:ref:`bool<class_bool>` **window_resizable** = ``true``

.. rst-class:: classref-property-setget

- void **set_window_resizable** **(** :ref:`bool<class_bool>` value **)**
- :ref:`bool<class_bool>` **is_window_resizable** **(** **)**

If ``true``, the window is resizable by the user.

.. rst-class:: classref-item-separator

----

.. _class_OS_property_window_size:

.. rst-class:: classref-property

:ref:`Vector2<class_Vector2>` **window_size** = ``Vector2( 0, 0 )``

.. rst-class:: classref-property-setget

- void **set_window_size** **(** :ref:`Vector2<class_Vector2>` value **)**
- :ref:`Vector2<class_Vector2>` **get_window_size** **(** **)**

The size of the window (without counting window manager decorations).

.. rst-class:: classref-section-separator

----

.. rst-class:: classref-descriptions-group

Method Descriptions
-------------------

.. _class_OS_method_alert:

.. rst-class:: classref-method

void **alert** **(** :ref:`String<class_String>` text, :ref:`String<class_String>` title="Alert!" **)**

Displays a modal dialog box using the host OS' facilities. Execution is blocked until the dialog is closed.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_can_draw:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **can_draw** **(** **)** |const|

Returns ``true`` if the host OS allows drawing.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_can_use_threads:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **can_use_threads** **(** **)** |const|

Returns ``true`` if the current host platform is using multiple threads.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_center_window:

.. rst-class:: classref-method

void **center_window** **(** **)**

Centers the window on the screen if in windowed mode.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_close_midi_inputs:

.. rst-class:: classref-method

void **close_midi_inputs** **(** **)**

Shuts down system MIDI driver.

\ **Note:** This method is implemented on Linux, macOS and Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_crash:

.. rst-class:: classref-method

void **crash** **(** :ref:`String<class_String>` message **)**

Crashes the engine (or the editor if called within a ``tool`` script). This should *only* be used for testing the system's crash handler, not for any other purpose. For general error reporting, use (in order of preference) :ref:`@GDScript.assert<class_@GDScript_method_assert>`, :ref:`@GDScript.push_error<class_@GDScript_method_push_error>` or :ref:`alert<class_OS_method_alert>`. See also :ref:`kill<class_OS_method_kill>`.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_delay_msec:

.. rst-class:: classref-method

void **delay_msec** **(** :ref:`int<class_int>` msec **)** |const|

Delays execution of the current thread by ``msec`` milliseconds. ``msec`` must be greater than or equal to ``0``. Otherwise, :ref:`delay_msec<class_OS_method_delay_msec>` will do nothing and will print an error message.

\ **Note:** :ref:`delay_msec<class_OS_method_delay_msec>` is a *blocking* way to delay code execution. To delay code execution in a non-blocking way, see :ref:`SceneTree.create_timer<class_SceneTree_method_create_timer>`. Yielding with :ref:`SceneTree.create_timer<class_SceneTree_method_create_timer>` will delay the execution of code placed below the ``yield`` without affecting the rest of the project (or editor, for :ref:`EditorPlugin<class_EditorPlugin>`\ s and :ref:`EditorScript<class_EditorScript>`\ s).

\ **Note:** When :ref:`delay_msec<class_OS_method_delay_msec>` is called on the main thread, it will freeze the project and will prevent it from redrawing and registering input until the delay has passed. When using :ref:`delay_msec<class_OS_method_delay_msec>` as part of an :ref:`EditorPlugin<class_EditorPlugin>` or :ref:`EditorScript<class_EditorScript>`, it will freeze the editor but won't freeze the project if it is currently running (since the project is an independent child process).

.. rst-class:: classref-item-separator

----

.. _class_OS_method_delay_usec:

.. rst-class:: classref-method

void **delay_usec** **(** :ref:`int<class_int>` usec **)** |const|

Delays execution of the current thread by ``usec`` microseconds. ``usec`` must be greater than or equal to ``0``. Otherwise, :ref:`delay_usec<class_OS_method_delay_usec>` will do nothing and will print an error message.

\ **Note:** :ref:`delay_usec<class_OS_method_delay_usec>` is a *blocking* way to delay code execution. To delay code execution in a non-blocking way, see :ref:`SceneTree.create_timer<class_SceneTree_method_create_timer>`. Yielding with :ref:`SceneTree.create_timer<class_SceneTree_method_create_timer>` will delay the execution of code placed below the ``yield`` without affecting the rest of the project (or editor, for :ref:`EditorPlugin<class_EditorPlugin>`\ s and :ref:`EditorScript<class_EditorScript>`\ s).

\ **Note:** When :ref:`delay_usec<class_OS_method_delay_usec>` is called on the main thread, it will freeze the project and will prevent it from redrawing and registering input until the delay has passed. When using :ref:`delay_usec<class_OS_method_delay_usec>` as part of an :ref:`EditorPlugin<class_EditorPlugin>` or :ref:`EditorScript<class_EditorScript>`, it will freeze the editor but won't freeze the project if it is currently running (since the project is an independent child process).

.. rst-class:: classref-item-separator

----

.. _class_OS_method_dump_memory_to_file:

.. rst-class:: classref-method

void **dump_memory_to_file** **(** :ref:`String<class_String>` file **)**

Dumps the memory allocation ringlist to a file (only works in debug).

Entry format per line: "Address - Size - Description".

.. rst-class:: classref-item-separator

----

.. _class_OS_method_dump_resources_to_file:

.. rst-class:: classref-method

void **dump_resources_to_file** **(** :ref:`String<class_String>` file **)**

Dumps all used resources to file (only works in debug).

Entry format per line: "Resource Type : Resource Location".

At the end of the file is a statistic of all used Resource Types.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_execute:

.. rst-class:: classref-method

:ref:`int<class_int>` **execute** **(** :ref:`String<class_String>` path, :ref:`PoolStringArray<class_PoolStringArray>` arguments, :ref:`bool<class_bool>` blocking=true, :ref:`Array<class_Array>` output=[  ], :ref:`bool<class_bool>` read_stderr=false, :ref:`bool<class_bool>` open_console=false **)**

Execute the file at the given path with the arguments passed as an array of strings. Platform path resolution will take place. The resolved file must exist and be executable.

The arguments are used in the given order and separated by a space, so ``OS.execute("ping", ["-w", "3", "godotengine.org"], false)`` will resolve to ``ping -w 3 godotengine.org`` in the system's shell.

This method has slightly different behavior based on whether the ``blocking`` mode is enabled.

If ``blocking`` is ``true``, the Godot thread will pause its execution while waiting for the process to terminate. The shell output of the process will be written to the ``output`` array as a single string. When the process terminates, the Godot thread will resume execution.

If ``blocking`` is ``false``, the Godot thread will continue while the new process runs. It is not possible to retrieve the shell output in non-blocking mode, so ``output`` will be empty.

On Windows, if ``open_console`` is ``true`` and process is console app, new terminal window will be opened, it's ignored on other platforms.

The return value also depends on the blocking mode. When blocking, the method will return an exit code of the process. When non-blocking, the method returns a process ID, which you can use to monitor the process (and potentially terminate it with :ref:`kill<class_OS_method_kill>`). If the process forking (non-blocking) or opening (blocking) fails, the method will return ``-1`` or another exit code.

Example of blocking mode and retrieving the shell output:

::

    var output = []
    var exit_code = OS.execute("ls", ["-l", "/tmp"], true, output)

Example of non-blocking mode, running another instance of the project and storing its process ID:

::

    var pid = OS.execute(OS.get_executable_path(), [], false)

If you wish to access a shell built-in or perform a composite command, a platform-specific shell can be invoked. For example:

::

    OS.execute("CMD.exe", ["/C", "cd %TEMP% && dir"], true, output)

\ **Note:** This method is implemented on Android, iOS, Linux, macOS and Windows.

\ **Note:** To execute a Windows command interpreter built-in command, specify ``cmd.exe`` in ``path``, ``/c`` as the first argument, and the desired command as the second argument.

\ **Note:** To execute a PowerShell built-in command, specify ``powershell.exe`` in ``path``, ``-Command`` as the first argument, and the desired command as the second argument.

\ **Note:** To execute a Unix shell built-in command, specify shell executable name in ``path``, ``-c`` as the first argument, and the desired command as the second argument.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_find_scancode_from_string:

.. rst-class:: classref-method

:ref:`int<class_int>` **find_scancode_from_string** **(** :ref:`String<class_String>` string **)** |const|

Returns the scancode of the given string (e.g. "Escape").

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_audio_driver_count:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_audio_driver_count** **(** **)** |const|

Returns the total number of available audio drivers.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_audio_driver_name:

.. rst-class:: classref-method

:ref:`String<class_String>` **get_audio_driver_name** **(** :ref:`int<class_int>` driver **)** |const|

Returns the audio driver name for the given index.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_cache_dir:

.. rst-class:: classref-method

:ref:`String<class_String>` **get_cache_dir** **(** **)** |const|

Returns the *global* cache data directory according to the operating system's standards. On Linux, this path can be overridden by setting the ``XDG_CACHE_HOME`` environment variable before starting the project. See :doc:`File paths in Godot projects <../tutorials/io/data_paths>` in the documentation for more information. See also :ref:`get_config_dir<class_OS_method_get_config_dir>` and :ref:`get_data_dir<class_OS_method_get_data_dir>`.

Not to be confused with :ref:`get_user_data_dir<class_OS_method_get_user_data_dir>`, which returns the *project-specific* user data path.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_cmdline_args:

.. rst-class:: classref-method

:ref:`PoolStringArray<class_PoolStringArray>` **get_cmdline_args** **(** **)**

Returns the command-line arguments passed to the engine.

Command-line arguments can be written in any form, including both ``--key value`` and ``--key=value`` forms so they can be properly parsed, as long as custom command-line arguments do not conflict with engine arguments.

You can also incorporate environment variables using the :ref:`get_environment<class_OS_method_get_environment>` method.

You can set :ref:`ProjectSettings.editor/main_run_args<class_ProjectSettings_property_editor/main_run_args>` to define command-line arguments to be passed by the editor when running the project.

Here's a minimal example on how to parse command-line arguments into a dictionary using the ``--key=value`` form for arguments:

::

    var arguments = {}
    for argument in OS.get_cmdline_args():
        if argument.find("=") > -1:
            var key_value = argument.split("=")
            arguments[key_value[0].lstrip("--")] = key_value[1]
        else:
            # Options without an argument will be present in the dictionary,
            # with the value set to an empty string.
            arguments[argument.lstrip("--")] = ""

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_config_dir:

.. rst-class:: classref-method

:ref:`String<class_String>` **get_config_dir** **(** **)** |const|

Returns the *global* user configuration directory according to the operating system's standards. On Linux, this path can be overridden by setting the ``XDG_CONFIG_HOME`` environment variable before starting the project. See :doc:`File paths in Godot projects <../tutorials/io/data_paths>` in the documentation for more information. See also :ref:`get_cache_dir<class_OS_method_get_cache_dir>` and :ref:`get_data_dir<class_OS_method_get_data_dir>`.

Not to be confused with :ref:`get_user_data_dir<class_OS_method_get_user_data_dir>`, which returns the *project-specific* user data path.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_connected_midi_inputs:

.. rst-class:: classref-method

:ref:`PoolStringArray<class_PoolStringArray>` **get_connected_midi_inputs** **(** **)**

Returns an array of MIDI device names.

The returned array will be empty if the system MIDI driver has not previously been initialised with :ref:`open_midi_inputs<class_OS_method_open_midi_inputs>`.

\ **Note:** This method is implemented on Linux, macOS and Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_current_video_driver:

.. rst-class:: classref-method

:ref:`VideoDriver<enum_OS_VideoDriver>` **get_current_video_driver** **(** **)** |const|

Returns the currently used video driver, using one of the values from :ref:`VideoDriver<enum_OS_VideoDriver>`.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_data_dir:

.. rst-class:: classref-method

:ref:`String<class_String>` **get_data_dir** **(** **)** |const|

Returns the *global* user data directory according to the operating system's standards. On Linux, this path can be overridden by setting the ``XDG_DATA_HOME`` environment variable before starting the project. See :doc:`File paths in Godot projects <../tutorials/io/data_paths>` in the documentation for more information. See also :ref:`get_cache_dir<class_OS_method_get_cache_dir>` and :ref:`get_config_dir<class_OS_method_get_config_dir>`.

Not to be confused with :ref:`get_user_data_dir<class_OS_method_get_user_data_dir>`, which returns the *project-specific* user data path.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_date:

.. rst-class:: classref-method

:ref:`Dictionary<class_Dictionary>` **get_date** **(** :ref:`bool<class_bool>` utc=false **)** |const|

Deprecated, use :ref:`Time.get_date_dict_from_system<class_Time_method_get_date_dict_from_system>` instead.

Returns current date as a dictionary of keys: ``year``, ``month``, ``day``, ``weekday``, ``dst`` (Daylight Savings Time).

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_datetime:

.. rst-class:: classref-method

:ref:`Dictionary<class_Dictionary>` **get_datetime** **(** :ref:`bool<class_bool>` utc=false **)** |const|

Deprecated, use :ref:`Time.get_datetime_dict_from_system<class_Time_method_get_datetime_dict_from_system>` instead.

Returns current datetime as a dictionary of keys: ``year``, ``month``, ``day``, ``weekday``, ``dst`` (Daylight Savings Time), ``hour``, ``minute``, ``second``.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_datetime_from_unix_time:

.. rst-class:: classref-method

:ref:`Dictionary<class_Dictionary>` **get_datetime_from_unix_time** **(** :ref:`int<class_int>` unix_time_val **)** |const|

Deprecated, use :ref:`Time.get_datetime_dict_from_unix_time<class_Time_method_get_datetime_dict_from_unix_time>` instead.

Gets a dictionary of time values corresponding to the given UNIX epoch time (in seconds).

The returned Dictionary's values will be the same as :ref:`get_datetime<class_OS_method_get_datetime>`, with the exception of Daylight Savings Time as it cannot be determined from the epoch.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_display_cutouts:

.. rst-class:: classref-method

:ref:`Array<class_Array>` **get_display_cutouts** **(** **)** |const|

Returns an :ref:`Array<class_Array>` of :ref:`Rect2<class_Rect2>`, each of which is the bounding rectangle for a display cutout or notch. These are non-functional areas on edge-to-edge screens used by cameras and sensors. Returns an empty array if the device does not have cutouts. See also :ref:`get_window_safe_area<class_OS_method_get_window_safe_area>`.

\ **Note:** Currently only implemented on Android. Other platforms will return an empty array even if they do have display cutouts or notches.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_dynamic_memory_usage:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_dynamic_memory_usage** **(** **)** |const|

Returns the total amount of dynamic memory used (only works in debug).

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_environment:

.. rst-class:: classref-method

:ref:`String<class_String>` **get_environment** **(** :ref:`String<class_String>` variable **)** |const|

Returns the value of an environment variable. Returns an empty string if the environment variable doesn't exist.

\ **Note:** Double-check the casing of ``variable``. Environment variable names are case-sensitive on all platforms except Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_executable_path:

.. rst-class:: classref-method

:ref:`String<class_String>` **get_executable_path** **(** **)** |const|

Returns the path to the current engine executable.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_granted_permissions:

.. rst-class:: classref-method

:ref:`PoolStringArray<class_PoolStringArray>` **get_granted_permissions** **(** **)** |const|

With this function, you can get the list of dangerous permissions that have been granted to the Android application.

\ **Note:** This method is implemented on Android.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_ime_selection:

.. rst-class:: classref-method

:ref:`Vector2<class_Vector2>` **get_ime_selection** **(** **)** |const|

Returns the IME cursor position (the currently-edited portion of the string) relative to the characters in the composition string.

\ :ref:`MainLoop.NOTIFICATION_OS_IME_UPDATE<class_MainLoop_constant_NOTIFICATION_OS_IME_UPDATE>` is sent to the application to notify it of changes to the IME cursor position.

\ **Note:** This method is implemented on macOS.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_ime_text:

.. rst-class:: classref-method

:ref:`String<class_String>` **get_ime_text** **(** **)** |const|

Returns the IME intermediate composition string.

\ :ref:`MainLoop.NOTIFICATION_OS_IME_UPDATE<class_MainLoop_constant_NOTIFICATION_OS_IME_UPDATE>` is sent to the application to notify it of changes to the IME composition string.

\ **Note:** This method is implemented on macOS.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_latin_keyboard_variant:

.. rst-class:: classref-method

:ref:`String<class_String>` **get_latin_keyboard_variant** **(** **)** |const|

Returns the current latin keyboard variant as a String.

Possible return values are: ``"QWERTY"``, ``"AZERTY"``, ``"QZERTY"``, ``"DVORAK"``, ``"NEO"``, ``"COLEMAK"`` or ``"ERROR"``.

\ **Note:** This method is implemented on Linux, macOS and Windows. Returns ``"QWERTY"`` on unsupported platforms.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_locale:

.. rst-class:: classref-method

:ref:`String<class_String>` **get_locale** **(** **)** |const|

Returns the host OS locale as a string of the form ``language_Script_COUNTRY_VARIANT@extra``. If you want only the language code and not the fully specified locale from the OS, you can use :ref:`get_locale_language<class_OS_method_get_locale_language>`.

\ ``language`` - 2 or 3-letter `language code <https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes>`__, in lower case.

\ ``Script`` - optional, 4-letter `script code <https://en.wikipedia.org/wiki/ISO_15924>`__, in title case.

\ ``COUNTRY`` - optional, 2 or 3-letter `country code <https://en.wikipedia.org/wiki/ISO_3166-1>`__, in upper case.

\ ``VARIANT`` - optional, language variant, region and sort order. Variant can have any number of underscored keywords.

\ ``extra`` - optional, semicolon separated list of additional key words. Currency, calendar, sort order and numbering system information.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_locale_language:

.. rst-class:: classref-method

:ref:`String<class_String>` **get_locale_language** **(** **)** |const|

Returns the host OS locale's 2 or 3-letter `language code <https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes>`__ as a string which should be consistent on all platforms. This is equivalent to extracting the ``language`` part of the :ref:`get_locale<class_OS_method_get_locale>` string.

This can be used to narrow down fully specified locale strings to only the "common" language code, when you don't need the additional information about country code or variants. For example, for a French Canadian user with ``fr_CA`` locale, this would return ``fr``.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_main_thread_id:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_main_thread_id** **(** **)** |const|

Returns the ID of the main thread. See :ref:`get_thread_caller_id<class_OS_method_get_thread_caller_id>`.

\ **Note:** Thread IDs are not deterministic and may be reused across application restarts.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_model_name:

.. rst-class:: classref-method

:ref:`String<class_String>` **get_model_name** **(** **)** |const|

Returns the model name of the current device.

\ **Note:** This method is implemented on Android and iOS. Returns ``"GenericDevice"`` on unsupported platforms.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_name:

.. rst-class:: classref-method

:ref:`String<class_String>` **get_name** **(** **)** |const|

Returns the name of the host OS. Possible values are: ``"Android"``, ``"iOS"``, ``"HTML5"``, ``"OSX"``, ``"Server"``, ``"Windows"``, ``"UWP"``, ``"X11"``.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_native_handle:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_native_handle** **(** :ref:`HandleType<enum_OS_HandleType>` handle_type **)**

Returns internal structure pointers for use in GDNative plugins.

\ **Note:** This method is implemented on Linux and Windows (other OSs will soon be supported).

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_power_percent_left:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_power_percent_left** **(** **)**

Returns the amount of battery left in the device as a percentage. Returns ``-1`` if power state is unknown.

\ **Note:** This method is implemented on Linux, macOS and Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_power_seconds_left:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_power_seconds_left** **(** **)**

Returns an estimate of the time left in seconds before the device runs out of battery. Returns ``-1`` if power state is unknown.

\ **Note:** This method is implemented on Linux, macOS and Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_power_state:

.. rst-class:: classref-method

:ref:`PowerState<enum_OS_PowerState>` **get_power_state** **(** **)**

Returns the current state of the device regarding battery and power. See :ref:`PowerState<enum_OS_PowerState>` constants.

\ **Note:** This method is implemented on Linux, macOS and Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_process_id:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_process_id** **(** **)** |const|

Returns the project's process ID.

\ **Note:** This method is implemented on Android, iOS, Linux, macOS and Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_processor_count:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_processor_count** **(** **)** |const|

Returns the number of *logical* CPU cores available on the host machine. On CPUs with HyperThreading enabled, this number will be greater than the number of *physical* CPU cores.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_processor_name:

.. rst-class:: classref-method

:ref:`String<class_String>` **get_processor_name** **(** **)** |const|

Returns the name of the CPU model on the host machine (e.g. "Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz").

\ **Note:** This method is only implemented on Windows, macOS, Linux and iOS. On Android, HTML5 and UWP, :ref:`get_processor_name<class_OS_method_get_processor_name>` returns an empty string.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_real_window_size:

.. rst-class:: classref-method

:ref:`Vector2<class_Vector2>` **get_real_window_size** **(** **)** |const|

Returns the window size including decorations like window borders.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_restart_on_exit_arguments:

.. rst-class:: classref-method

:ref:`PoolStringArray<class_PoolStringArray>` **get_restart_on_exit_arguments** **(** **)** |const|

Returns the list of command line arguments that will be used when the project automatically restarts using :ref:`set_restart_on_exit<class_OS_method_set_restart_on_exit>`. See also :ref:`is_restart_on_exit_set<class_OS_method_is_restart_on_exit_set>`.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_scancode_string:

.. rst-class:: classref-method

:ref:`String<class_String>` **get_scancode_string** **(** :ref:`int<class_int>` code **)** |const|

Returns the given scancode as a string (e.g. Return values: ``"Escape"``, ``"Shift+Escape"``).

See also :ref:`InputEventKey.scancode<class_InputEventKey_property_scancode>` and :ref:`InputEventKey.get_scancode_with_modifiers<class_InputEventKey_method_get_scancode_with_modifiers>`.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_screen_count:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_screen_count** **(** **)** |const|

Returns the number of displays attached to the host machine.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_screen_dpi:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_screen_dpi** **(** :ref:`int<class_int>` screen=-1 **)** |const|

Returns the dots per inch density of the specified screen. If ``screen`` is ``-1`` (the default value), the current screen will be used.

\ **Note:** On macOS, returned value is inaccurate if fractional display scaling mode is used.

\ **Note:** On Android devices, the actual screen densities are grouped into six generalized densities:

::

       ldpi - 120 dpi
       mdpi - 160 dpi
       hdpi - 240 dpi
      xhdpi - 320 dpi
     xxhdpi - 480 dpi
    xxxhdpi - 640 dpi

\ **Note:** This method is implemented on Android, Linux, macOS and Windows. Returns ``72`` on unsupported platforms.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_screen_max_scale:

.. rst-class:: classref-method

:ref:`float<class_float>` **get_screen_max_scale** **(** **)** |const|

Return the greatest scale factor of all screens.

\ **Note:** On macOS returned value is ``2.0`` if there is at least one hiDPI (Retina) screen in the system, and ``1.0`` in all other cases.

\ **Note:** This method is implemented on macOS.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_screen_position:

.. rst-class:: classref-method

:ref:`Vector2<class_Vector2>` **get_screen_position** **(** :ref:`int<class_int>` screen=-1 **)** |const|

Returns the position of the specified screen by index. If ``screen`` is ``-1`` (the default value), the current screen will be used.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_screen_refresh_rate:

.. rst-class:: classref-method

:ref:`float<class_float>` **get_screen_refresh_rate** **(** :ref:`int<class_int>` screen=-1 **)** |const|

Returns the current refresh rate of the specified screen. If ``screen`` is ``-1`` (the default value), the current screen will be used.

\ **Note:** Returns ``-1.0`` if Godot fails to find the refresh rate for the specified screen. On HTML5, :ref:`get_screen_refresh_rate<class_OS_method_get_screen_refresh_rate>` will always return ``-1.0`` as there is no way to retrieve the refresh rate on that platform.

To fallback to a default refresh rate if the method fails, try:

::

    var refresh_rate = OS.get_screen_refresh_rate()
    if refresh_rate < 0:
        refresh_rate = 60.0

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_screen_scale:

.. rst-class:: classref-method

:ref:`float<class_float>` **get_screen_scale** **(** :ref:`int<class_int>` screen=-1 **)** |const|

Return the scale factor of the specified screen by index. If ``screen`` is ``-1`` (the default value), the current screen will be used.

\ **Note:** On macOS returned value is ``2.0`` for hiDPI (Retina) screen, and ``1.0`` for all other cases.

\ **Note:** This method is implemented on macOS.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_screen_size:

.. rst-class:: classref-method

:ref:`Vector2<class_Vector2>` **get_screen_size** **(** :ref:`int<class_int>` screen=-1 **)** |const|

Returns the dimensions in pixels of the specified screen. If ``screen`` is ``-1`` (the default value), the current screen will be used.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_splash_tick_msec:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_splash_tick_msec** **(** **)** |const|

Returns the amount of time in milliseconds it took for the boot logo to appear.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_static_memory_peak_usage:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_static_memory_peak_usage** **(** **)** |const|

Returns the maximum amount of static memory used (only works in debug).

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_static_memory_usage:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_static_memory_usage** **(** **)** |const|

Returns the amount of static memory being used by the program in bytes (only works in debug).

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_system_dir:

.. rst-class:: classref-method

:ref:`String<class_String>` **get_system_dir** **(** :ref:`SystemDir<enum_OS_SystemDir>` dir, :ref:`bool<class_bool>` shared_storage=true **)** |const|

Returns the actual path to commonly used folders across different platforms. Available locations are specified in :ref:`SystemDir<enum_OS_SystemDir>`.

\ **Note:** This method is implemented on Android, Linux, macOS and Windows.

\ **Note:** Shared storage is implemented on Android and allows to differentiate between app specific and shared directories. Shared directories have additional restrictions on Android.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_system_time_msecs:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_system_time_msecs** **(** **)** |const|

Returns the epoch time of the operating system in milliseconds.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_system_time_secs:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_system_time_secs** **(** **)** |const|

Returns the epoch time of the operating system in seconds.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_tablet_driver_count:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_tablet_driver_count** **(** **)** |const|

Returns the total number of available tablet drivers.

\ **Note:** This method is implemented on Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_tablet_driver_name:

.. rst-class:: classref-method

:ref:`String<class_String>` **get_tablet_driver_name** **(** :ref:`int<class_int>` idx **)** |const|

Returns the tablet driver name for the given index.

\ **Note:** This method is implemented on Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_thread_caller_id:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_thread_caller_id** **(** **)** |const|

Returns the ID of the current thread. This can be used in logs to ease debugging of multi-threaded applications.

\ **Note:** Thread IDs are not deterministic and may be reused across application restarts.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_ticks_msec:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_ticks_msec** **(** **)** |const|

Deprecated, use :ref:`Time.get_ticks_msec<class_Time_method_get_ticks_msec>` instead.

Returns the amount of time passed in milliseconds since the engine started.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_ticks_usec:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_ticks_usec** **(** **)** |const|

Deprecated, use :ref:`Time.get_ticks_usec<class_Time_method_get_ticks_usec>` instead.

Returns the amount of time passed in microseconds since the engine started.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_time:

.. rst-class:: classref-method

:ref:`Dictionary<class_Dictionary>` **get_time** **(** :ref:`bool<class_bool>` utc=false **)** |const|

Deprecated, use :ref:`Time.get_time_dict_from_system<class_Time_method_get_time_dict_from_system>` instead.

Returns current time as a dictionary of keys: hour, minute, second.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_time_zone_info:

.. rst-class:: classref-method

:ref:`Dictionary<class_Dictionary>` **get_time_zone_info** **(** **)** |const|

Returns the current time zone as a dictionary with the keys: bias and name.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_unique_id:

.. rst-class:: classref-method

:ref:`String<class_String>` **get_unique_id** **(** **)** |const|

Returns a string that is unique to the device.

\ **Note:** This string may change without notice if the user reinstalls/upgrades their operating system or changes their hardware. This means it should generally not be used to encrypt persistent data as the data saved before an unexpected ID change would become inaccessible. The returned string may also be falsified using external programs, so do not rely on the string returned by :ref:`get_unique_id<class_OS_method_get_unique_id>` for security purposes.

\ **Note:** Returns an empty string and prints an error on HTML5, as this method cannot be implemented on this platform.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_unix_time:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_unix_time** **(** **)** |const|

Returns the current UNIX epoch timestamp in seconds.

\ **Important:** This is the system clock that the user can manually set. **Never use** this method for precise time calculation since its results are also subject to automatic adjustments by the operating system. **Always use** :ref:`get_ticks_usec<class_OS_method_get_ticks_usec>` or :ref:`get_ticks_msec<class_OS_method_get_ticks_msec>` for precise time calculation instead, since they are guaranteed to be monotonic (i.e. never decrease).

\ **Note:** To get a floating point timestamp with sub-second precision, use :ref:`Time.get_unix_time_from_system<class_Time_method_get_unix_time_from_system>`.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_unix_time_from_datetime:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_unix_time_from_datetime** **(** :ref:`Dictionary<class_Dictionary>` datetime **)** |const|

Gets an epoch time value from a dictionary of time values.

\ ``datetime`` must be populated with the following keys: ``year``, ``month``, ``day``, ``hour``, ``minute``, ``second``.

If the dictionary is empty ``0`` is returned. If some keys are omitted, they default to the equivalent values for the UNIX epoch timestamp 0 (1970-01-01 at 00:00:00 UTC).

You can pass the output from :ref:`get_datetime_from_unix_time<class_OS_method_get_datetime_from_unix_time>` directly into this function. Daylight Savings Time (``dst``), if present, is ignored.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_user_data_dir:

.. rst-class:: classref-method

:ref:`String<class_String>` **get_user_data_dir** **(** **)** |const|

Returns the absolute directory path where user data is written (``user://``).

On Linux, this is ``~/.local/share/godot/app_userdata/[project_name]``, or ``~/.local/share/[custom_name]`` if ``use_custom_user_dir`` is set.

On macOS, this is ``~/Library/Application Support/Godot/app_userdata/[project_name]``, or ``~/Library/Application Support/[custom_name]`` if ``use_custom_user_dir`` is set.

On Windows, this is ``%APPDATA%\Godot\app_userdata\[project_name]``, or ``%APPDATA%\[custom_name]`` if ``use_custom_user_dir`` is set. ``%APPDATA%`` expands to ``%USERPROFILE%\AppData\Roaming``.

If the project name is empty, ``user://`` falls back to ``res://``.

Not to be confused with :ref:`get_data_dir<class_OS_method_get_data_dir>`, which returns the *global* (non-project-specific) user data directory.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_video_driver_count:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_video_driver_count** **(** **)** |const|

Returns the number of video drivers supported on the current platform.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_video_driver_name:

.. rst-class:: classref-method

:ref:`String<class_String>` **get_video_driver_name** **(** :ref:`VideoDriver<enum_OS_VideoDriver>` driver **)** |const|

Returns the name of the video driver matching the given ``driver`` index. This index is a value from :ref:`VideoDriver<enum_OS_VideoDriver>`, and you can use :ref:`get_current_video_driver<class_OS_method_get_current_video_driver>` to get the current backend's index.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_virtual_keyboard_height:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_virtual_keyboard_height** **(** **)**

Returns the on-screen keyboard's height in pixels. Returns 0 if there is no keyboard or if it is currently hidden.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_get_window_safe_area:

.. rst-class:: classref-method

:ref:`Rect2<class_Rect2>` **get_window_safe_area** **(** **)** |const|

Returns unobscured area of the window where interactive controls should be rendered.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_global_menu_add_item:

.. rst-class:: classref-method

void **global_menu_add_item** **(** :ref:`String<class_String>` menu, :ref:`String<class_String>` label, :ref:`Variant<class_Variant>` id, :ref:`Variant<class_Variant>` meta **)**

Add a new item with text "label" to global menu. Use "_dock" menu to add item to the macOS dock icon menu.

\ **Note:** This method is implemented on macOS.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_global_menu_add_separator:

.. rst-class:: classref-method

void **global_menu_add_separator** **(** :ref:`String<class_String>` menu **)**

Add a separator between items. Separators also occupy an index.

\ **Note:** This method is implemented on macOS.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_global_menu_clear:

.. rst-class:: classref-method

void **global_menu_clear** **(** :ref:`String<class_String>` menu **)**

Clear the global menu, in effect removing all items.

\ **Note:** This method is implemented on macOS.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_global_menu_remove_item:

.. rst-class:: classref-method

void **global_menu_remove_item** **(** :ref:`String<class_String>` menu, :ref:`int<class_int>` idx **)**

Removes the item at index "idx" from the global menu. Note that the indexes of items after the removed item are going to be shifted by one.

\ **Note:** This method is implemented on macOS.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_has_clipboard:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **has_clipboard** **(** **)** |const|

Returns ``true`` if there is content on the clipboard.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_has_environment:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **has_environment** **(** :ref:`String<class_String>` variable **)** |const|

Returns ``true`` if the environment variable with the name ``variable`` exists.

\ **Note:** Double-check the casing of ``variable``. Environment variable names are case-sensitive on all platforms except Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_has_feature:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **has_feature** **(** :ref:`String<class_String>` tag_name **)** |const|

Returns ``true`` if the feature for the given feature tag is supported in the currently running instance, depending on the platform, build etc. Can be used to check whether you're currently running a debug build, on a certain platform or arch, etc. Refer to the :doc:`Feature Tags <../tutorials/export/feature_tags>` documentation for more details.

\ **Note:** Tag names are case-sensitive.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_has_touchscreen_ui_hint:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **has_touchscreen_ui_hint** **(** **)** |const|

Returns ``true`` if the device has a touchscreen or emulates one.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_has_virtual_keyboard:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **has_virtual_keyboard** **(** **)** |const|

Returns ``true`` if the platform has a virtual keyboard, ``false`` otherwise.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_hide_virtual_keyboard:

.. rst-class:: classref-method

void **hide_virtual_keyboard** **(** **)**

Hides the virtual keyboard if it is shown, does nothing otherwise.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_is_debug_build:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **is_debug_build** **(** **)** |const|

Returns ``true`` if the Godot binary used to run the project is a *debug* export template, or when running in the editor.

Returns ``false`` if the Godot binary used to run the project is a *release* export template.

To check whether the Godot binary used to run the project is an export template (debug or release), use ``OS.has_feature("standalone")`` instead.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_is_ok_left_and_cancel_right:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **is_ok_left_and_cancel_right** **(** **)** |const|

Returns ``true`` if the **OK** button should appear on the left and **Cancel** on the right.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_is_process_running:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **is_process_running** **(** :ref:`int<class_int>` pid **)** |const|

Returns ``true`` if the child process ID (``pid``) is still running or ``false`` if it has terminated.

Must be a valid ID generated from :ref:`execute<class_OS_method_execute>`.

\ **Note:** This method is implemented on Android, iOS, Linux, macOS and Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_is_restart_on_exit_set:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **is_restart_on_exit_set** **(** **)** |const|

Returns ``true`` if the project will automatically restart when it exits for any reason, ``false`` otherwise. See also :ref:`set_restart_on_exit<class_OS_method_set_restart_on_exit>` and :ref:`get_restart_on_exit_arguments<class_OS_method_get_restart_on_exit_arguments>`.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_is_scancode_unicode:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **is_scancode_unicode** **(** :ref:`int<class_int>` code **)** |const|

Returns ``true`` if the input scancode corresponds to a Unicode character.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_is_stdout_verbose:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **is_stdout_verbose** **(** **)** |const|

Returns ``true`` if the engine was executed with ``-v`` (verbose stdout).

.. rst-class:: classref-item-separator

----

.. _class_OS_method_is_userfs_persistent:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **is_userfs_persistent** **(** **)** |const|

If ``true``, the ``user://`` file system is persistent, so that its state is the same after a player quits and starts the game again. Relevant to the HTML5 platform, where this persistence may be unavailable.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_is_window_always_on_top:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **is_window_always_on_top** **(** **)** |const|

Returns ``true`` if the window should always be on top of other windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_is_window_focused:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **is_window_focused** **(** **)** |const|

Returns ``true`` if the window is currently focused.

\ **Note:** Only implemented on desktop platforms. On other platforms, it will always return ``true``.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_keyboard_get_current_layout:

.. rst-class:: classref-method

:ref:`int<class_int>` **keyboard_get_current_layout** **(** **)** |const|

Returns active keyboard layout index.

\ **Note:** This method is implemented on Linux, macOS and Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_keyboard_get_layout_count:

.. rst-class:: classref-method

:ref:`int<class_int>` **keyboard_get_layout_count** **(** **)** |const|

Returns the number of keyboard layouts.

\ **Note:** This method is implemented on Linux, macOS and Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_keyboard_get_layout_language:

.. rst-class:: classref-method

:ref:`String<class_String>` **keyboard_get_layout_language** **(** :ref:`int<class_int>` index **)** |const|

Returns the ISO-639/BCP-47 language code of the keyboard layout at position ``index``.

\ **Note:** This method is implemented on Linux, macOS and Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_keyboard_get_layout_name:

.. rst-class:: classref-method

:ref:`String<class_String>` **keyboard_get_layout_name** **(** :ref:`int<class_int>` index **)** |const|

Returns the localized name of the keyboard layout at position ``index``.

\ **Note:** This method is implemented on Linux, macOS and Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_keyboard_get_scancode_from_physical:

.. rst-class:: classref-method

:ref:`int<class_int>` **keyboard_get_scancode_from_physical** **(** :ref:`int<class_int>` scancode **)** |const|

Converts a physical (US QWERTY) ``scancode`` to one in the active keyboard layout.

\ **Note:** This method is implemented on Linux, macOS and Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_keyboard_set_current_layout:

.. rst-class:: classref-method

void **keyboard_set_current_layout** **(** :ref:`int<class_int>` index **)**

Sets active keyboard layout.

\ **Note:** This method is implemented on Linux, macOS and Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_kill:

.. rst-class:: classref-method

:ref:`Error<enum_@GlobalScope_Error>` **kill** **(** :ref:`int<class_int>` pid **)**

Kill (terminate) the process identified by the given process ID (``pid``), e.g. the one returned by :ref:`execute<class_OS_method_execute>` in non-blocking mode. See also :ref:`crash<class_OS_method_crash>`.

\ **Note:** This method can also be used to kill processes that were not spawned by the game.

\ **Note:** This method is implemented on Android, iOS, Linux, macOS and Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_move_to_trash:

.. rst-class:: classref-method

:ref:`Error<enum_@GlobalScope_Error>` **move_to_trash** **(** :ref:`String<class_String>` path **)** |const|

Moves the file or directory to the system's recycle bin. See also :ref:`Directory.remove<class_Directory_method_remove>`.

The method takes only global paths, so you may need to use :ref:`ProjectSettings.globalize_path<class_ProjectSettings_method_globalize_path>`. Do not use it for files in ``res://`` as it will not work in exported project.

\ **Note:** If the user has disabled the recycle bin on their system, the file will be permanently deleted instead.

::

    var file_to_remove = "user://slot1.sav"
    OS.move_to_trash(ProjectSettings.globalize_path(file_to_remove))

.. rst-class:: classref-item-separator

----

.. _class_OS_method_move_window_to_foreground:

.. rst-class:: classref-method

void **move_window_to_foreground** **(** **)**

Moves the window to the front.

\ **Note:** This method is implemented on Linux, macOS and Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_native_video_is_playing:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **native_video_is_playing** **(** **)**

Returns ``true`` if native video is playing.

\ **Note:** This method is only implemented on iOS.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_native_video_pause:

.. rst-class:: classref-method

void **native_video_pause** **(** **)**

Pauses native video playback.

\ **Note:** This method is only implemented on iOS.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_native_video_play:

.. rst-class:: classref-method

:ref:`Error<enum_@GlobalScope_Error>` **native_video_play** **(** :ref:`String<class_String>` path, :ref:`float<class_float>` volume, :ref:`String<class_String>` audio_track, :ref:`String<class_String>` subtitle_track **)**

Plays native video from the specified path, at the given volume and with audio and subtitle tracks.

\ **Note:** This method is only implemented on iOS.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_native_video_stop:

.. rst-class:: classref-method

void **native_video_stop** **(** **)**

Stops native video playback.

\ **Note:** This method is implemented on iOS.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_native_video_unpause:

.. rst-class:: classref-method

void **native_video_unpause** **(** **)**

Resumes native video playback.

\ **Note:** This method is implemented on iOS.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_open_midi_inputs:

.. rst-class:: classref-method

void **open_midi_inputs** **(** **)**

Initialises the singleton for the system MIDI driver.

\ **Note:** This method is implemented on Linux, macOS and Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_print_all_resources:

.. rst-class:: classref-method

void **print_all_resources** **(** :ref:`String<class_String>` tofile="" **)**

Shows all resources in the game. Optionally, the list can be written to a file by specifying a file path in ``tofile``.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_print_all_textures_by_size:

.. rst-class:: classref-method

void **print_all_textures_by_size** **(** **)**

Shows the list of loaded textures sorted by size in memory.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_print_resources_by_type:

.. rst-class:: classref-method

void **print_resources_by_type** **(** :ref:`PoolStringArray<class_PoolStringArray>` types **)**

Shows the number of resources loaded by the game of the given types.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_print_resources_in_use:

.. rst-class:: classref-method

void **print_resources_in_use** **(** :ref:`bool<class_bool>` short=false **)**

Shows all resources currently used by the game.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_read_string_from_stdin:

.. rst-class:: classref-method

:ref:`String<class_String>` **read_string_from_stdin** **(** **)**

Reads a user input string from the standard input (usually the terminal). This operation is *blocking*, which causes the window to freeze if :ref:`read_string_from_stdin<class_OS_method_read_string_from_stdin>` is called on the main thread. The thread calling :ref:`read_string_from_stdin<class_OS_method_read_string_from_stdin>` will block until the program receives a line break in standard input (usually by the user pressing :kbd:`Enter`).

\ **Note:** This method is implemented on Linux, macOS and Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_request_attention:

.. rst-class:: classref-method

void **request_attention** **(** **)**

Request the user attention to the window. It'll flash the taskbar button on Windows or bounce the dock icon on OSX.

\ **Note:** This method is implemented on Linux, macOS and Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_request_permission:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **request_permission** **(** :ref:`String<class_String>` name **)**

At the moment this function is only used by ``AudioDriverOpenSL`` to request permission for ``RECORD_AUDIO`` on Android.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_request_permissions:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **request_permissions** **(** **)**

With this function, you can request dangerous permissions since normal permissions are automatically granted at install time in Android applications.

\ **Note:** This method is implemented on Android.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_set_environment:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **set_environment** **(** :ref:`String<class_String>` variable, :ref:`String<class_String>` value **)** |const|

Sets the value of the environment variable ``variable`` to ``value``. The environment variable will be set for the Godot process and any process executed with :ref:`execute<class_OS_method_execute>` after running :ref:`set_environment<class_OS_method_set_environment>`. The environment variable will *not* persist to processes run after the Godot process was terminated.

\ **Note:** Double-check the casing of ``variable``. Environment variable names are case-sensitive on all platforms except Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_set_icon:

.. rst-class:: classref-method

void **set_icon** **(** :ref:`Image<class_Image>` icon **)**

Sets the game's icon using an :ref:`Image<class_Image>` resource.

The same image is used for window caption, taskbar/dock and window selection dialog. Image is scaled as needed.

\ **Note:** This method is implemented on HTML5, Linux, macOS and Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_set_ime_active:

.. rst-class:: classref-method

void **set_ime_active** **(** :ref:`bool<class_bool>` active **)**

Sets whether IME input mode should be enabled.

If active IME handles key events before the application and creates an composition string and suggestion list.

Application can retrieve the composition status by using :ref:`get_ime_selection<class_OS_method_get_ime_selection>` and :ref:`get_ime_text<class_OS_method_get_ime_text>` functions.

Completed composition string is committed when input is finished.

\ **Note:** This method is implemented on Linux, macOS and Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_set_ime_position:

.. rst-class:: classref-method

void **set_ime_position** **(** :ref:`Vector2<class_Vector2>` position **)**

Sets position of IME suggestion list popup (in window coordinates).

\ **Note:** This method is implemented on Linux, macOS and Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_set_native_icon:

.. rst-class:: classref-method

void **set_native_icon** **(** :ref:`String<class_String>` filename **)**

Sets the game's icon using a multi-size platform-specific icon file (``*.ico`` on Windows and ``*.icns`` on macOS).

Appropriate size sub-icons are used for window caption, taskbar/dock and window selection dialog.

\ **Note:** This method is implemented on macOS and Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_set_restart_on_exit:

.. rst-class:: classref-method

void **set_restart_on_exit** **(** :ref:`bool<class_bool>` restart, :ref:`PoolStringArray<class_PoolStringArray>` arguments=PoolStringArray(  ) **)**

If ``restart`` is ``true``, restarts the project automatically when it is exited with :ref:`SceneTree.quit<class_SceneTree_method_quit>` or :ref:`Node.NOTIFICATION_WM_QUIT_REQUEST<class_Node_constant_NOTIFICATION_WM_QUIT_REQUEST>`. Command line ``arguments`` can be supplied. To restart the project with the same command line arguments as originally used to run the project, pass :ref:`get_cmdline_args<class_OS_method_get_cmdline_args>` as the value for ``arguments``.

\ :ref:`set_restart_on_exit<class_OS_method_set_restart_on_exit>` can be used to apply setting changes that require a restart. See also :ref:`is_restart_on_exit_set<class_OS_method_is_restart_on_exit_set>` and :ref:`get_restart_on_exit_arguments<class_OS_method_get_restart_on_exit_arguments>`.

\ **Note:** This method is only effective on desktop platforms, and only when the project isn't started from the editor. It will have no effect on mobile and Web platforms, or when the project is started from the editor.

\ **Note:** If the project process crashes or is *killed* by the user (by sending ``SIGKILL`` instead of the usual ``SIGTERM``), the project won't restart automatically.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_set_thread_name:

.. rst-class:: classref-method

:ref:`Error<enum_@GlobalScope_Error>` **set_thread_name** **(** :ref:`String<class_String>` name **)**

Sets the name of the current thread.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_set_use_file_access_save_and_swap:

.. rst-class:: classref-method

void **set_use_file_access_save_and_swap** **(** :ref:`bool<class_bool>` enabled **)**

Enables backup saves if ``enabled`` is ``true``.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_set_window_always_on_top:

.. rst-class:: classref-method

void **set_window_always_on_top** **(** :ref:`bool<class_bool>` enabled **)**

Sets whether the window should always be on top.

\ **Note:** This method is implemented on Linux, macOS and Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_set_window_mouse_passthrough:

.. rst-class:: classref-method

void **set_window_mouse_passthrough** **(** :ref:`PoolVector2Array<class_PoolVector2Array>` region **)**

Sets a polygonal region of the window which accepts mouse events. Mouse events outside the region will be passed through.

Passing an empty array will disable passthrough support (all mouse events will be intercepted by the window, which is the default behavior).

::

    # Set region, using Path2D node.
    OS.set_window_mouse_passthrough($Path2D.curve.get_baked_points())
    
    # Set region, using Polygon2D node.
    OS.set_window_mouse_passthrough($Polygon2D.polygon)
    
    # Reset region to default.
    OS.set_window_mouse_passthrough([])

\ **Note:** On Windows, the portion of a window that lies outside the region is not drawn, while on Linux and macOS it is.

\ **Note:** This method is implemented on Linux, macOS and Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_set_window_title:

.. rst-class:: classref-method

void **set_window_title** **(** :ref:`String<class_String>` title **)**

Sets the window title to the specified string.

\ **Note:** This should be used sporadically. Don't set this every frame, as that will negatively affect performance on some window managers.

\ **Note:** This method is implemented on HTML5, Linux, macOS and Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_shell_open:

.. rst-class:: classref-method

:ref:`Error<enum_@GlobalScope_Error>` **shell_open** **(** :ref:`String<class_String>` uri **)**

Requests the OS to open a resource with the most appropriate program. For example:

- ``OS.shell_open("C:\\Users\name\Downloads")`` on Windows opens the file explorer at the user's Downloads folder.

- ``OS.shell_open("https://godotengine.org")`` opens the default web browser on the official Godot website.

- ``OS.shell_open("mailto:[email protected]")`` opens the default email client with the "To" field set to ``[email protected]``. See `RFC 2368 - The [code]mailto[/code] URL scheme <https://datatracker.ietf.org/doc/html/rfc2368>`__ for a list of fields that can be added.

Use :ref:`ProjectSettings.globalize_path<class_ProjectSettings_method_globalize_path>` to convert a ``res://`` or ``user://`` path into a system path for use with this method.

\ **Note:** Use :ref:`String.percent_encode<class_String_method_percent_encode>` to encode characters within URLs in a URL-safe, portable way. This is especially required for line breaks. Otherwise, :ref:`shell_open<class_OS_method_shell_open>` may not work correctly in a project exported to the Web platform.

\ **Note:** This method is implemented on Android, iOS, HTML5, Linux, macOS and Windows.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_show_virtual_keyboard:

.. rst-class:: classref-method

void **show_virtual_keyboard** **(** :ref:`String<class_String>` existing_text="", :ref:`bool<class_bool>` multiline=false **)**

Shows the virtual keyboard if the platform has one.

The ``existing_text`` parameter is useful for implementing your own :ref:`LineEdit<class_LineEdit>` or :ref:`TextEdit<class_TextEdit>`, as it tells the virtual keyboard what text has already been typed (the virtual keyboard uses it for auto-correct and predictions).

The ``multiline`` parameter needs to be set to ``true`` to be able to enter multiple lines of text, as in :ref:`TextEdit<class_TextEdit>`.

\ **Note:** This method is equivalent to calling :ref:`show_virtual_keyboard_type<class_OS_method_show_virtual_keyboard_type>` with either default or multiline keyboard type. It is kept for compatibility with previous Godot releases and should be considered *deprecated* and replaced by :ref:`show_virtual_keyboard_type<class_OS_method_show_virtual_keyboard_type>`.

\ **Note:** This method is implemented on Android, iOS, UWP, and HTML5.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_show_virtual_keyboard_type:

.. rst-class:: classref-method

void **show_virtual_keyboard_type** **(** :ref:`String<class_String>` existing_text="", :ref:`VirtualKeyboardType<enum_OS_VirtualKeyboardType>` type=0 **)**

Shows the virtual keyboard if the platform has one.

The ``existing_text`` parameter is useful for implementing your own :ref:`LineEdit<class_LineEdit>` or :ref:`TextEdit<class_TextEdit>`, as it tells the virtual keyboard what text has already been typed (the virtual keyboard uses it for auto-correct and predictions).

The ``type`` parameter allows selecting which virtual keyboard to show.

\ **Note:** This method is implemented on Android, iOS, UWP, and HTML5.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_tts_get_voices:

.. rst-class:: classref-method

:ref:`Array<class_Array>` **tts_get_voices** **(** **)** |const|

Returns an :ref:`Array<class_Array>` of voice information dictionaries.

Each :ref:`Dictionary<class_Dictionary>` contains two :ref:`String<class_String>` entries:

- ``name`` is voice name.

- ``id`` is voice identifier.

- ``language`` is language code in ``lang_Variant`` format. ``lang`` part is a 2 or 3-letter code based on the ISO-639 standard, in lowercase. And ``Variant`` part is an engine dependent string describing country, region or/and dialect.

\ **Note:** This method is implemented on Android, iOS, HTML5, Linux, macOS, and Windows.

\ **Note:** :ref:`ProjectSettings.audio/general/text_to_speech<class_ProjectSettings_property_audio/general/text_to_speech>` should be ``true`` to use text-to-speech.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_tts_get_voices_for_language:

.. rst-class:: classref-method

:ref:`PoolStringArray<class_PoolStringArray>` **tts_get_voices_for_language** **(** :ref:`String<class_String>` language **)** |const|

Returns an :ref:`PoolStringArray<class_PoolStringArray>` of voice identifiers for the ``language``.

\ **Note:** This method is implemented on Android, iOS, HTML5, Linux, macOS, and Windows.

\ **Note:** :ref:`ProjectSettings.audio/general/text_to_speech<class_ProjectSettings_property_audio/general/text_to_speech>` should be ``true`` to use text-to-speech.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_tts_is_paused:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **tts_is_paused** **(** **)** |const|

Returns ``true`` if the synthesizer is in a paused state.

\ **Note:** This method is implemented on Android, iOS, HTML5, Linux, macOS, and Windows.

\ **Note:** :ref:`ProjectSettings.audio/general/text_to_speech<class_ProjectSettings_property_audio/general/text_to_speech>` should be ``true`` to use text-to-speech.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_tts_is_speaking:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **tts_is_speaking** **(** **)** |const|

Returns ``true`` if the synthesizer is generating speech, or have utterance waiting in the queue.

\ **Note:** This method is implemented on Android, iOS, HTML5, Linux, macOS, and Windows.

\ **Note:** :ref:`ProjectSettings.audio/general/text_to_speech<class_ProjectSettings_property_audio/general/text_to_speech>` should be ``true`` to use text-to-speech.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_tts_pause:

.. rst-class:: classref-method

void **tts_pause** **(** **)**

Puts the synthesizer into a paused state.

\ **Note:** This method is implemented on Android, iOS, HTML5, Linux, macOS, and Windows.

\ **Note:** :ref:`ProjectSettings.audio/general/text_to_speech<class_ProjectSettings_property_audio/general/text_to_speech>` should be ``true`` to use text-to-speech.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_tts_resume:

.. rst-class:: classref-method

void **tts_resume** **(** **)**

Resumes the synthesizer if it was paused.

\ **Note:** This method is implemented on Android, iOS, HTML5, Linux, macOS, and Windows.

\ **Note:** :ref:`ProjectSettings.audio/general/text_to_speech<class_ProjectSettings_property_audio/general/text_to_speech>` should be ``true`` to use text-to-speech.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_tts_set_utterance_callback:

.. rst-class:: classref-method

void **tts_set_utterance_callback** **(** :ref:`TTSUtteranceEvent<enum_OS_TTSUtteranceEvent>` event, :ref:`Object<class_Object>` object, :ref:`String<class_String>` callback **)**

Adds a callback, which is called when the utterance has started, finished, canceled or reached a text boundary.

- ``TTS_UTTERANCE_STARTED``, ``TTS_UTTERANCE_ENDED``, and ``TTS_UTTERANCE_CANCELED`` callable's method should take one :ref:`int<class_int>` parameter, the utterance id.

- ``TTS_UTTERANCE_BOUNDARY`` callable's method should take two :ref:`int<class_int>` parameters, the index of the character and the utterance id.

\ **Note:** The granularity of the boundary callbacks is engine dependent.

\ **Note:** This method is implemented on Android, iOS, HTML5, Linux, macOS, and Windows.

\ **Note:** :ref:`ProjectSettings.audio/general/text_to_speech<class_ProjectSettings_property_audio/general/text_to_speech>` should be ``true`` to use text-to-speech.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_tts_speak:

.. rst-class:: classref-method

void **tts_speak** **(** :ref:`String<class_String>` text, :ref:`String<class_String>` voice, :ref:`int<class_int>` volume=50, :ref:`float<class_float>` pitch=1.0, :ref:`float<class_float>` rate=1.0, :ref:`int<class_int>` utterance_id=0, :ref:`bool<class_bool>` interrupt=false **)**

Adds an utterance to the queue. If ``interrupt`` is ``true``, the queue is cleared first.

- ``voice`` identifier is one of the ``"id"`` values returned by :ref:`tts_get_voices<class_OS_method_tts_get_voices>` or one of the values returned by :ref:`tts_get_voices_for_language<class_OS_method_tts_get_voices_for_language>`.

- ``volume`` ranges from ``0`` (lowest) to ``100`` (highest).

- ``pitch`` ranges from ``0.0`` (lowest) to ``2.0`` (highest), ``1.0`` is default pitch for the current voice.

- ``rate`` ranges from ``0.1`` (lowest) to ``10.0`` (highest), ``1.0`` is a normal speaking rate. Other values act as a percentage relative.

- ``utterance_id`` is passed as a parameter to the callback functions.

\ **Note:** On Windows and Linux, utterance ``text`` can use SSML markup. SSML support is engine and voice dependent. If the engine does not support SSML, you should strip out all XML markup before calling :ref:`tts_speak<class_OS_method_tts_speak>`.

\ **Note:** The granularity of pitch, rate, and volume is engine and voice dependent. Values may be truncated.

\ **Note:** This method is implemented on Android, iOS, HTML5, Linux, macOS, and Windows.

\ **Note:** :ref:`ProjectSettings.audio/general/text_to_speech<class_ProjectSettings_property_audio/general/text_to_speech>` should be ``true`` to use text-to-speech.

.. rst-class:: classref-item-separator

----

.. _class_OS_method_tts_stop:

.. rst-class:: classref-method

void **tts_stop** **(** **)**

Stops synthesis in progress and removes all utterances from the queue.

\ **Note:** This method is implemented on Android, iOS, HTML5, Linux, macOS, and Windows.

\ **Note:** :ref:`ProjectSettings.audio/general/text_to_speech<class_ProjectSettings_property_audio/general/text_to_speech>` should be ``true`` to use text-to-speech.

.. |virtual| replace:: :abbr:`virtual (This method should typically be overridden by the user to have any effect.)`
.. |const| replace:: :abbr:`const (This method has no side effects. It doesn't modify any of the instance's member variables.)`
.. |vararg| replace:: :abbr:`vararg (This method accepts any number of arguments after the ones described here.)`
.. |static| replace:: :abbr:`static (This method doesn't need an instance to be called, so it can be called directly using the class name.)`