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[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 1370
type TCheckBox = class(TCustomCheckBox) |
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public |
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constructor Create(); override; |
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Constructor for the class instance. |
published |
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property Action: TBasicAction; |
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The Action associated with the control. |
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Specifies the placement of the control on its Parent control. |
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property Alignment: TLeftRight; |
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Indicates the alignment for the caption text in the control. |
property AllowGrayed: Boolean; |
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Allows the check box to use a "grayed" state. |
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The set of anchor definitions for this control. |
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property AutoSize: Boolean; |
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Allows automatic adjustment of the size for the control, according to its content. |
property BidiMode: TBiDiMode; |
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Indicates whether text controls use in bi-directional reading. |
property BorderSpacing: TControlBorderSpacing; |
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Determines the inner and outer border spacing for this control. |
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The text displayed for the control. |
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property Checked: Boolean; |
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Indicates the checked state for the control. |
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The background color of the control. |
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property Constraints: TSizeConstraints; |
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Contains the minimum and maximum Width and Height for the control. |
property DoubleBuffered: Boolean; |
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Allows to reduce flicker in the painting of the control. |
property DragCursor: TCursor; |
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The cursor shape shown while the control is dragged. |
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The operation when the control is dragged - Drag or Dock. |
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Allows the user to drag the control. |
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property Enabled: Boolean; |
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Determines whether the control responds to mouse or keyboard input. |
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The font to be used for text display in this control. |
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property Hint: TTranslateString; |
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The text to show in the Hint window for the control. |
property OnChange: TNotifyEvent; |
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Event handler for changes to properties in the control. |
property OnChangeBounds: TNotifyEvent; |
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Event handler signalled when the Bounds for the control have been changed. |
property OnClick: TNotifyEvent; |
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Notification handler for mouse clicks. |
property OnContextPopup: TContextPopupEvent; |
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Invoked when a context-sensitive pop-up menu is requested. |
property OnDragDrop: TDragDropEvent; |
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This handler determines the action on an drop onto this control, in a drag-drop operation. |
property OnDragOver: TDragOverEvent; |
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Event handler for a control being dragged over this control. |
property OnEditingDone: TNotifyEvent; |
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Event handler signalled when editing is done. |
property OnEndDrag: TEndDragEvent; |
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Notification handler for the end of a drag operation. |
property OnEnter: TNotifyEvent; |
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Handler for control receiving the focus. |
property OnExit: TNotifyEvent; |
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Handler for control losing the focus; This is a good place for checking the finished user input. |
property OnKeyPress: TKeyPressEvent; |
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Handler for a character entered by the user. |
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Handler for keyboard key pressed. |
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Event handler signalled when a key up event has occurred for the control. |
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property OnMouseDown: TMouseEvent; |
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Event handler signalled when a mouse down event is handled for the control. |
property OnMouseEnter: TNotifyEvent; |
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Event handler signalled when the mouse pointer has entered the control. |
property OnMouseLeave: TNotifyEvent; |
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Event handler signalled when the mouse pointer has left the control. |
property OnMouseMove: TMouseMoveEvent; |
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Event handler for mouse movement within the control. |
property OnMouseUp: TMouseEvent; |
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Event handler signalled when a mouse up event is handled for the control. |
property OnMouseWheel: TMouseWheelEvent; |
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Event handler for mouse wheel turned. |
property OnMouseWheelDown: TMouseWheelUpDownEvent; |
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Event handler for downward movement of mouse wheel. |
property OnMouseWheelUp: TMouseWheelUpDownEvent; |
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Event handler for upward movement of the mouse wheel. |
property OnResize: TNotifyEvent; |
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Notification handler for a resize of the control. |
property OnStartDrag: TStartDragEvent; |
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Event handler for the start of a dragging operation. |
property OnUTF8KeyPress: TUTF8KeyPressEvent; |
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Handler for a character entered by the user. |
property ParentColor: Boolean; |
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Use the Color from the Parent control, when enabled. |
property ParentDoubleBuffered: Boolean; |
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Value for the DoubleBuffered property in a Parent control. |
property ParentFont: Boolean; |
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If True, the Font of the control will be the same as the one from the Parent. Default is True. |
property ParentShowHint: Boolean; |
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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; |
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Indicates whether the BiDiMode settings in the Parent control are used. |
property PopupMenu: TPopupMenu; |
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A context-sensitive menu that pops up when the right mouse button is clicked over this control. |
property ShowHint: Boolean; |
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Enables Hint display for the control. |
property State: TCheckBoxState; |
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The check, unchecked, or grayed state for the control. |
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Indicates the navigation order for the control when the user presses the Tab or Shift+Tab key. |
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property TabStop: Boolean; |
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Enables keyboard navigation using the Tab or Shift+Tab keys. |
property Visible: Boolean; |
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Allows the control, and all of its children, to be displayed or hidden. |
end; |
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A label with a box which can contain a check mark. |
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The base class for a check box component. |
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Specifies a base class for button controls. |
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Implements a windowed control which can contain other child controls. |
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The base class for visible controls. |
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The base class for LCL components which have an associated widget. |
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TComponent |
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TObject |
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.
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How to use StdCtrls, ComCtrls or ExtCtrls. |
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Specifies a base class for button controls. |
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The base class for a check box component. |
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A labelled box capable of being checked or unchecked. |
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Implement a radio button control. |