[Overview][Constants][Types][Classes][Procedures and functions][Index] |
[Properties (by Name)] [Methods (by Name)] [Events (by Name)]
A label with a box which can contain a check mark.
Source position: stdctrls.pp line 1369
type TCheckBox = class(TCustomCheckBox) |
||
public |
||
constructor Create(); override; |
|
Constructor for the class instance. |
published |
||
property Action: TBasicAction; |
|
The Action associated with the control. |
|
Specifies the placement of the control on its Parent control. |
|
property Alignment: TLeftRight; |
|
Indicates the alignment for the caption text in the control. |
property AllowGrayed: Boolean; |
|
Allows the check box to use a "grayed" state. |
|
The set of anchor definitions for this control. |
|
property AutoSize: Boolean; |
|
Allows automatic adjustment of the size for the control, according to its content. |
|
Indicates whether text controls use in bi-directional reading. |
|
property BorderSpacing: TControlBorderSpacing; |
|
Determines the inner and outer border spacing for this control. |
|
The text displayed for the control. |
|
property Checked: Boolean; |
|
Indicates the checked state for the control. |
|
The background color for the control. |
|
property Constraints: TSizeConstraints; |
|
Contains the minimum and maximum Width and Height for the control. |
property DoubleBuffered: Boolean; |
|
When enabled, it reduces flicker when the control is painted. |
property DragCursor: TCursor; |
|
The cursor shape shown during a drag operation. |
|
Indicates the action performed for a drag operation: drag-and-drop or drag-and-dock. |
|
|
Determines how a drag operation is started for the control. |
|
property Enabled: Boolean; |
|
Determines whether the control responds to mouse or keyboard input. |
|
The font to be used for text display in this control. |
|
property Hint: TTranslateString; |
|
The text to show in the Hint window for the control. |
property ParentColor: Boolean; |
|
Use the Color from the Parent control, when enabled. |
property ParentDoubleBuffered: Boolean; |
|
Value for the DoubleBuffered property in a Parent control. |
property ParentFont: Boolean; |
|
Indicates if the Font from the Parent control is used in the control. |
property ParentShowHint: Boolean; |
|
If True, the value of ShowHint for the control will be the same as the one from the Parent. Default is True. |
property ParentBidiMode: Boolean; |
|
Indicates whether the BiDiMode settings in the Parent control are used. |
property PopupMenu: TPopupMenu; |
|
A context-sensitive menu that pops up when the right mouse button is clicked over this control. |
property ShowHint: Boolean; |
|
Enables Hint display for the control. |
property State: TCheckBoxState; |
|
The check, unchecked, or grayed state for the control. |
|
Indicates the navigation order for the control when the user presses the Tab or Shift+Tab key. |
|
property TabStop: Boolean; |
|
Enables keyboard navigation using the Tab or Shift+Tab keys. |
property Visible: Boolean; |
|
Allows the control, and all of its children, to be displayed or hidden. |
property OnChange: TNotifyEvent; |
|
Event handler for signalled when the button control is clicked. |
property OnChangeBounds: TNotifyEvent; |
|
Event handler signalled when the Bounds for the control have been changed. |
property OnClick: TNotifyEvent; |
||
property OnContextPopup: TContextPopupEvent; |
|
Invoked when a context-sensitive pop-up menu is requested. |
property OnDragDrop: TDragDropEvent; |
|
Event handler signalled when an object is dropped onto the control. |
property OnDragOver: TDragOverEvent; |
|
Event handler signalled when a control is dragged over the control instance. |
property OnEditingDone: TNotifyEvent; |
|
Event handler signalled when editing is completed for the control. |
property OnEndDrag: TEndDragEvent; |
|
Event handler signalled for the end of a drag-drop operation. |
property OnEnter: TNotifyEvent; |
|
Event handler signalled when the control receives focus. |
property OnExit: TNotifyEvent; |
|
Event handler signalled when the control loses focus. |
property OnKeyPress: TKeyPressEvent; |
|
Event handler signalled for character data entered by the user. |
|
Event handler signalled for key down keyboard events. |
|
|
Event handler signalled when a key up event has occurred for the control. |
|
property OnMouseDown: TMouseEvent; |
|
Event handler signalled when a mouse down event is handled for the control. |
property OnMouseEnter: TNotifyEvent; |
|
Event handler signalled when the mouse pointer has entered the control. |
property OnMouseLeave: TNotifyEvent; |
|
Event handler signalled when the mouse pointer has left the control. |
property OnMouseMove: TMouseMoveEvent; |
|
Event handler signalled when the mouse pointer is moved in the control. |
property OnMouseUp: TMouseEvent; |
|
Event handler signalled when a mouse up event is handled for the control. |
property OnMouseWheel: TMouseWheelEvent; |
|
Event handler for mouse wheel turned. |
property OnMouseWheelDown: TMouseWheelUpDownEvent; |
|
Event handler signalled for a downward movement of the mouse wheel. |
property OnMouseWheelUp: TMouseWheelUpDownEvent; |
|
Event handler signalled for an upward movement of the mouse wheel. |
property OnResize: TNotifyEvent; |
|
Notification handler for a resize of the control. |
property OnStartDrag: TStartDragEvent; |
|
Event handler signalled for the start of a dragging operation. |
property OnUTF8KeyPress: TUTF8KeyPressEvent; |
|
Handler for a character entered by the user. |
end; |
|
A label with a box which can contain a check mark. |
|
| | ||
|
The base class for a check box component. |
|
| | ||
|
Specifies a base class for button controls. |
|
| | ||
|
Implements a windowed control which can contain other child controls. |
|
| | ||
|
The base class for visible controls. |
|
| | ||
|
The base class for LCL components which have an associated widget. |
|
| | ||
| | ||
| | ||
TCheckBox is a TCustomCheckBox descendant which implements a check box component. A check box control allows the user to choose the state for the control independent of other check box controls (unlike a radio button).
The State property contains the checked, unchecked, or grayed state for the control. The AllowGrayed property indicates if the grayed state is allowed in the control; otherwise only checked and unchecked are used. The Checked property allows the value in State to be updated by setting a Boolean value that indicates if the control is check or unchecked.
|
How to use StdCtrls, ComCtrls or ExtCtrls. |
|
|
Specifies a base class for button controls. |
|
|
The base class for a check box component. |
|
|
A labelled box capable of being checked or unchecked. |
|
|
Implement a radio button control. |
Version 3.2 | Generated 2024-02-25 | Home |