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# Class CheckBox

The CheckBox View shows an on/off toggle that the user can set

##### Inheritance

System.Object
Responder
View
CheckBox

##### Implements

System.IDisposable
System.ComponentModel.ISupportInitializeNotification
System.ComponentModel.ISupportInitialize

##### Inherited Members

View.Added
View.Removed
View.Enter
View.Leave
View.MouseEnter
View.MouseLeave
View.MouseClick
View.HotKey
View.HotKeySpecifier
View.Shortcut
View.ShortcutTag
View.ShortcutAction
View.Data
View.Driver
View.Subviews
View.TabIndexes
View.TabIndex
View.TabStop
View.CanFocus
View.Id
View.IsCurrentTop
View.WantMousePositionReports
View.WantContinuousButtonPressed
View.Frame
View.LayoutStyle
View.Bounds
View.X
View.Y
View.Width
View.Height
View.SuperView
View.SetNeedsDisplay()
View.ClearLayoutNeeded()
View.SetNeedsDisplay(Rect)
View.SetChildNeedsDisplay()
View.Add(View)
View.Add(View[])
View.RemoveAll()
View.Remove(View)
View.BringSubviewToFront(View)
View.SendSubviewToBack(View)
View.SendSubviewBackwards(View)
View.BringSubviewForward(View)
View.Clear()
View.Clear(Rect)
View.ScreenToView(Int32, Int32)
View.ClipToBounds()
View.SetClip(Rect)
View.DrawFrame(Rect, Int32, Boolean)
View.DrawHotString(ustring, Attribute, Attribute)
View.DrawHotString(ustring, Boolean, ColorScheme)
View.Move(Int32, Int32)
View.HasFocus
View.OnAdded(View)
View.OnRemoved(View)
View.OnLeave(View)
View.Focused
View.MostFocused
View.ColorScheme
View.AddRune(Int32, Int32, Rune)
View.ClearNeedsDisplay()
View.DrawContent
View.OnDrawContent(Rect)
View.SetFocus()
View.KeyPress
View.ProcessColdKey(KeyEvent)
View.KeyDown
View.OnKeyDown(KeyEvent)
View.KeyUp
View.OnKeyUp(KeyEvent)
View.EnsureFocus()
View.FocusFirst()
View.FocusLast()
View.FocusPrev()
View.FocusNext()
View.LayoutStarted
View.LayoutComplete
View.Initialized
View.LayoutSubviews()
View.AutoSize
View.TextAlignment
View.VerticalTextAlignment
View.TextDirection
View.IsInitialized
View.ToString()
View.OnMouseEnter(MouseEvent)
View.OnMouseLeave(MouseEvent)
View.OnMouseEvent(MouseEvent)
View.OnMouseClick(View.MouseEventArgs)
View.Dispose(Boolean)
View.BeginInit()
View.EndInit()
View.Visible
View.SetWidth(Int32, Int32)
View.SetHeight(Int32, Int32)
View.GetCurrentWidth(Int32)
View.GetCurrentHeight(Int32)
Responder.Dispose()
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)

###### Namespace: Terminal.Gui

###### Assembly: Terminal.Gui.dll

##### Syntax

    public class CheckBox : View, IDisposable, ISupportInitializeNotification, ISupportInitialize

### Constructors

#### CheckBox()

Initializes a new instance of CheckBox based on the given text, using Computed layout.

##### Declaration

    public CheckBox()

#### CheckBox(ustring, Boolean)

Initializes a new instance of CheckBox based on the given text, using Computed layout.

##### Declaration

    public CheckBox(ustring s, bool is_checked = false)

##### Parameters

Type | Name | Description
--- | --- | ---
NStack.ustring | s | S.
System.Boolean | is_checked | If set to `true` is checked.

#### CheckBox(Int32, Int32, ustring)

Initializes a new instance of CheckBox using Absolute layout.

##### Declaration

    public CheckBox(int x, int y, ustring s)

##### Parameters

Type | Name | Description
--- | --- | ---
System.Int32 | x |
System.Int32 | y |
NStack.ustring | s |

##### Remarks

The size of CheckBox is computed based on the text length. This CheckBox is not toggled.

#### CheckBox(Int32, Int32, ustring, Boolean)

Initializes a new instance of CheckBox using Absolute layout.

##### Declaration

    public CheckBox(int x, int y, ustring s, bool is_checked)

##### Parameters

Type | Name | Description
--- | --- | ---
System.Int32 | x |
System.Int32 | y |
NStack.ustring | s |
System.Boolean | is_checked |

##### Remarks

The size of CheckBox is computed based on the text length.

### Properties

#### Checked

The state of the CheckBox

##### Declaration

    public bool Checked { get; set; }

##### Property Value

Type | Description
--- | ---
System.Boolean |

#### Text

The text displayed by this CheckBox

##### Declaration

    public ustring Text { get; set; }

##### Property Value

Type | Description
--- | ---
NStack.ustring |

### Methods

#### MouseEvent(MouseEvent)

##### Declaration

    public override bool MouseEvent(MouseEvent me)

##### Parameters

Type | Name | Description
--- | --- | ---
MouseEvent | me |

##### Returns

Type | Description
--- | ---
System.Boolean |

##### Overrides

Responder.MouseEvent(MouseEvent)

#### OnEnter(View)

##### Declaration

    public override bool OnEnter(View view)

##### Parameters

Type | Name | Description
--- | --- | ---
View | view |

##### Returns

Type | Description
--- | ---
System.Boolean |

##### Overrides

View.OnEnter(View)

#### OnToggled(Boolean)

Called when the Checked property changes. Invokes the Toggled event.

##### Declaration

    public virtual void OnToggled(bool previousChecked)

##### Parameters

Type | Name | Description
--- | --- | ---
System.Boolean | previousChecked |

#### PositionCursor()

##### Declaration

    public override void PositionCursor()

##### Overrides

View.PositionCursor()

#### ProcessHotKey(KeyEvent)

##### Declaration

    public override bool ProcessHotKey(KeyEvent ke)

##### Parameters

Type | Name | Description
--- | --- | ---
KeyEvent | ke |

##### Returns

Type | Description
--- | ---
System.Boolean |

##### Overrides

View.ProcessHotKey(KeyEvent)

#### ProcessKey(KeyEvent)

##### Declaration

    public override bool ProcessKey(KeyEvent kb)

##### Parameters

Type | Name | Description
--- | --- | ---
KeyEvent | kb |

##### Returns

Type | Description
--- | ---
System.Boolean |

##### Overrides

View.ProcessKey(KeyEvent)

#### Redraw(Rect)

##### Declaration

    public override void Redraw(Rect bounds)

##### Parameters

Type | Name | Description
--- | --- | ---
Rect | bounds |

##### Overrides

View.Redraw(Rect)

### Events

#### Toggled

Toggled event, raised when the CheckBox is toggled.

##### Declaration

    public event Action<bool> Toggled

##### Event Type

Type | Description
--- | ---
System.Action<System.Boolean> |

##### Remarks

Client code can hook up to this event, it is raised when the CheckBox is activated either with the mouse or the keyboard. The passed `bool` contains the previous state.

### Implements

System.IDisposable
System.ComponentModel.ISupportInitializeNotification
System.ComponentModel.ISupportInitialize