[Overview][Constants][Types][Classes][Procedures and functions][Index] Reference for unit 'StdCtrls' (#lcl)

TCheckBox

[Properties (by Name)] [Methods (by Name)] [Events (by Name)]

A label with a box which can contain a check mark.

Declaration

Source position: stdctrls.pp line 1233

type TCheckBox = class(TCustomCheckBox)

public

  constructor Create(); override;

published

  property Action;

  

The Action associated with this control.

  property Align;

  

Specifies the placement of the control inside its Parent.

  property AllowGrayed;

  

Allows the check box to be in a "grayed" state.

  property Anchors;

  

The set of anchor definitions for this control.

  property AutoSize;

  

Allows to automatically adjust the size of the control, according to its content.

  property BidiMode;

  

Customization (of text controls) in bidirectional reading environments.

  property BorderSpacing;

  

Determines the inner and outer border spacing for this control.

  property Caption;

  

The text describing the control to the user.

  property Checked;

  

The state of the check mark. Here always False, can be implemented in derived classes.

  property Color;

  

The background color of the control.

  property Constraints;

  

The minimal and maximal Width and Height of this control.

  property DragCursor;

  

The cursor shape shown while the control is dragged.

  property DragKind;

  

The operation when the control is dragged - Drag or Dock.

  property DragMode;

  

Allows the user to drag the control.

  property Enabled;

  

Determines whether the control reacts on mouse or keyboard input.

  property Font;

  

The font to be used for text display in this control.

  property Hint;

  

The text to show in the Hint window for this control.

  property OnChange;

  

Handler for any change in properties of the control.

  property OnChangeBounds;

  

Event handler for a change of the Bounds of the control.

  property OnClick;

  

Notification handler for mouse clicks.

  property OnContextPopup;

  

Invoked when a context-sensitive pop-up menu is requested.

  property OnDragDrop;

  

This handler determines the action on an drop onto this control, in a drag-drop operation.

  property OnDragOver;

  

Event handler for a control being dragged over this control.

  property OnEditingDone;

  

Event handler when editing is done.

  property OnEndDrag;

  

Notification handler for the end of a dragging operation.

  property OnEnter;

  

Handler for control receiving the focus.

  property OnExit;

  

Handler for control loosing the focus. This is a good place for checking the finished user input.

  property OnKeyPress;

  

Handler for a character entered by the user.

  property OnKeyDown;

  

Handler for keyboard key pressed.

  property OnKeyUp;

  

Handler for keyboard key released.

  property OnMouseDown;

  

Event handler for mouse button going down.

  property OnMouseEnter;

  

Event handler for mouse entering the area of the control.

  property OnMouseLeave;

  

Event handler for mouse leaving the area of the control.

  property OnMouseMove;

  

Event handler for mouse movement within the control.

  property OnMouseUp;

  

Event handler for mouse button going up.

  property OnResize;

  

Notification handler for a resize of the control.

  property OnStartDrag;

  

Event handler for the start of a dragging operation.

  property OnUTF8KeyPress;

  

Handler for a character entered by the user.

  property ParentColor;

  

If true, the Color of the control will be the same as the one from the Parent. Default is true.

  property ParentFont;

  

If true, the Font of the control will be the same as the one from the Parent. Default is true.

  property ParentShowHint;

  

If true, the value of ShowHint for the control will be the same as the one from the Parent. Default is true.

  property ParentBidiMode;

  

Allows to use the BiDiMode settings of Parent. Default is true.

  property PopupMenu;

  

A context-sensitive menu that pops up when the right mouse button is clicked over this control

  property ShowHint;

  

Enables the Hint display.

  property State;

  

Indicates whether the check box is checked (selected), unchecked (deselected) or grayed (disabled).

  property TabOrder;

  

Determines the sequence of controls, reachable when the user presses the Tab key.

  property TabStop;

  

Allows the user to navigate to this control, by pressing the Tab key.

  property Visible;

  

Allows to show or hide the control, and all of its children.

end;

Inheritance

TCheckBox

  

A label with a box which can contain a check mark.

|

TCustomCheckBox

  

The base class for checkbox components.

|

TButtonControl

  

The base class for various button controls.

|

TWinControl

  

The base class for controls which can contain other (child) controls.

|

TControl

  

The base class for visible controls.

|

TLCLComponent

  

The base class for LCL components associated with widgets.

|

TComponent,IUnknown,IInterfaceComponentReference

|

TPersistent

|

TObject

See also

HowToUseStdCtrls

  

How to use StdCtrls, ComCtrls or ExtCtrls

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