.. Generated automatically by doc/tools/makerst.py in Godot's source tree.
.. DO NOT EDIT THIS FILE, but the MainLoop.xml source instead.
.. The source is found in doc/classes or modules/<name>/doc_classes.

.. _class_MainLoop:

MainLoop
========

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

**Inherited By:** :ref:`SceneTree<class_scenetree>`

**Category:** Core

Brief Description
-----------------

Main loop is the abstract main loop base class.

Member Functions
----------------

+--------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| void                     | :ref:`_drop_files<class_MainLoop__drop_files>` **(** :ref:`PoolStringArray<class_poolstringarray>` files, :ref:`int<class_int>` screen **)** virtual |
+--------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| void                     | :ref:`_finalize<class_MainLoop__finalize>` **(** **)** virtual                                                                                       |
+--------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| void                     | :ref:`_idle<class_MainLoop__idle>` **(** :ref:`float<class_float>` delta **)** virtual                                                               |
+--------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| void                     | :ref:`_initialize<class_MainLoop__initialize>` **(** **)** virtual                                                                                   |
+--------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| void                     | :ref:`_input_event<class_MainLoop__input_event>` **(** :ref:`InputEvent<class_inputevent>` ev **)** virtual                                          |
+--------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| void                     | :ref:`_input_text<class_MainLoop__input_text>` **(** :ref:`String<class_string>` text **)** virtual                                                  |
+--------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| void                     | :ref:`_iteration<class_MainLoop__iteration>` **(** :ref:`float<class_float>` delta **)** virtual                                                     |
+--------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| void                     | :ref:`finish<class_MainLoop_finish>` **(** **)**                                                                                                     |
+--------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`bool<class_bool>`  | :ref:`idle<class_MainLoop_idle>` **(** :ref:`float<class_float>` delta **)**                                                                         |
+--------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| void                     | :ref:`init<class_MainLoop_init>` **(** **)**                                                                                                         |
+--------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| void                     | :ref:`input_event<class_MainLoop_input_event>` **(** :ref:`InputEvent<class_inputevent>` ev **)**                                                    |
+--------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| void                     | :ref:`input_text<class_MainLoop_input_text>` **(** :ref:`String<class_string>` text **)**                                                            |
+--------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`bool<class_bool>`  | :ref:`iteration<class_MainLoop_iteration>` **(** :ref:`float<class_float>` delta **)**                                                               |
+--------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+

Numeric Constants
-----------------

- **NOTIFICATION_WM_MOUSE_ENTER** = **2**
- **NOTIFICATION_WM_MOUSE_EXIT** = **3**
- **NOTIFICATION_WM_FOCUS_IN** = **4**
- **NOTIFICATION_WM_FOCUS_OUT** = **5**
- **NOTIFICATION_WM_QUIT_REQUEST** = **6**
- **NOTIFICATION_WM_GO_BACK_REQUEST** = **7**
- **NOTIFICATION_WM_UNFOCUS_REQUEST** = **8**
- **NOTIFICATION_OS_MEMORY_WARNING** = **9**
- **NOTIFICATION_TRANSLATION_CHANGED** = **90**
- **NOTIFICATION_WM_ABOUT** = **91**

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

Main loop is the abstract main loop base class. All other main loop classes are derived from it. Upon application start, a ``MainLoop`` has to be provided to OS, else the application will exit. This happens automatically (and a :ref:`SceneTree<class_scenetree>` is created), unless a main :ref:`Script<class_script>` is supplied, which may or not create and return a ``MainLoop``.

Member Function Description
---------------------------

.. _class_MainLoop__drop_files:

- void **_drop_files** **(** :ref:`PoolStringArray<class_poolstringarray>` files, :ref:`int<class_int>` screen **)** virtual

.. _class_MainLoop__finalize:

- void **_finalize** **(** **)** virtual

Called before the program exits.

.. _class_MainLoop__idle:

- void **_idle** **(** :ref:`float<class_float>` delta **)** virtual

Called each idle frame with time since last call as an only argument.

.. _class_MainLoop__initialize:

- void **_initialize** **(** **)** virtual

Called once during initialization.

.. _class_MainLoop__input_event:

- void **_input_event** **(** :ref:`InputEvent<class_inputevent>` ev **)** virtual

.. _class_MainLoop__input_text:

- void **_input_text** **(** :ref:`String<class_string>` text **)** virtual

.. _class_MainLoop__iteration:

- void **_iteration** **(** :ref:`float<class_float>` delta **)** virtual

.. _class_MainLoop_finish:

- void **finish** **(** **)**

.. _class_MainLoop_idle:

- :ref:`bool<class_bool>` **idle** **(** :ref:`float<class_float>` delta **)**

.. _class_MainLoop_init:

- void **init** **(** **)**

.. _class_MainLoop_input_event:

- void **input_event** **(** :ref:`InputEvent<class_inputevent>` ev **)**

.. _class_MainLoop_input_text:

- void **input_text** **(** :ref:`String<class_string>` text **)**

.. _class_MainLoop_iteration:

- :ref:`bool<class_bool>` **iteration** **(** :ref:`float<class_float>` delta **)**