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

TCheckGroup

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

TCheckGroup is a group of Check Boxes physically and logically grouped together on a form.

Declaration

Source position: extctrls.pp line 860

type TCheckGroup = class(TCustomCheckGroup)

published

  property Align: TAlign;

  

Specifies the placement of the control inside its Parent.

  property Anchors: TAnchors;

  

The set of anchor definitions for this control.

  property AutoFill: Boolean;

  

Indicates if check boxes are resized to fill the available space in the control.

  property AutoSize: Boolean;

  

Allows automatic adjustment of the size for the control, according to its content.

  property BiDiMode: TBiDiMode;

  

Customization (of text controls) in bidirectional reading environments.

  property BorderSpacing: TControlBorderSpacing;

  

Determines the inner and outer border spacing for this control.

  property Caption: TCaption;

  

String which appears at the top of the grouped edit control.

  property ChildSizing: TControlChildSizing;

  

Parameters for child control arrangement and spacing.

  property ClientHeight: Integer;

  

The height of the client area of the control.

  property ClientWidth: Integer;

  

The width of the client area of the control.

  property Color: TColor;

  

The background color of the control.

  property ColumnLayout: TColumnLayout;

  

ColumnLayoutHorizontalThenVertical or vice versa.

  property Columns: Integer;

  

Columns is the number of columns in which the Items (check boxes) are arranged.

  property Constraints: TSizeConstraints;

  

The minimum and maximum Width and Height for the control.

  property DoubleBuffered: Boolean;

  

Allows to reduce flicker in the painting of the control.

  property DragCursor: TCursor;

  

The cursor shape shown while the control is dragged.

  property DragMode: TDragMode;

  

Allows the user to drag the control.

  property Enabled: Boolean;

  

Determines whether the control reacts on mouse or keyboard input.

  property Font: TFont;

  

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

  property Items: TStrings;

  

Items - a string list containing the captions of the check boxes.

  property OnChangeBounds: TNotifyEvent;

  

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

  property OnClick: TNotifyEvent;

  

Notification handler for mouse clicks.

  property OnDblClick: TNotifyEvent;

  

Event Handler for double mouse clicks.

  property OnDragDrop: TDragDropEvent;

  

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

  property OnDragOver: TDragOverEvent;

  

Event handler for a control being dragged over this control.

  property OnEndDrag: TEndDragEvent;

  

Notification handler for the end of a dragging operation.

  property OnEnter: TNotifyEvent;

  

Handler for control receiving the focus.

  property OnExit: TNotifyEvent;

  

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

  property OnItemClick: TCheckGroupClicked;

  

OnItemClick - event handler signalled when the mouse is clicked on one of the Items in the control.

  property OnKeyDown: TKeyEvent;

  

Handler for keyboard key pressed.

  property OnKeyPress: TKeyPressEvent;

  

Handler for a character entered by the user.

  property OnKeyUp: TKeyEvent;

  

Handler for keyboard key released.

  property OnMouseDown: TMouseEvent;

  

Event handler for mouse button going down.

  property OnMouseEnter: TNotifyEvent;

  

Event handler for mouse entering the area of the control.

  property OnMouseLeave: TNotifyEvent;

  

Event handler for mouse leaving the area of the control.

  property OnMouseMove: TMouseMoveEvent;

  

Event handler for mouse movement within the control.

  property OnMouseUp: TMouseEvent;

  

Event handler for mouse button going up.

  property OnMouseWheel: TMouseWheelEvent;

  

Event handler for mouse wheel turned.

  property OnMouseWheelDown: TMouseWheelUpDownEvent;

  

Event handler for downward movement of mouse wheel.

  property OnMouseWheelUp: TMouseWheelUpDownEvent;

  

Event handler for upward movement of the mouse wheel.

  property OnResize: TNotifyEvent;

  

Notification handler for a resize of the control.

  property OnStartDrag: TStartDragEvent;

  

Event handler for the start of a dragging operation.

  property OnUTF8KeyPress: TUTF8KeyPressEvent;

  

Handler for a character entered by the user.

  property ParentBackground: Boolean;

  

Indicates if the control uses the background for its Parent control.

  property ParentBiDiMode: Boolean;

  

Allows to use the BiDiMode settings in the Parent control. Default is true.

  property ParentFont: Boolean;

  

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

  property ParentColor: Boolean;

  

Use the Color from the Parent control, when enabled.

  property ParentDoubleBuffered: Boolean;

  

Value from the DoubleBuffered property in a Parent 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 PopupMenu: TPopupMenu;

  

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

  property ShowHint: Boolean;

  

Enables the Hint display.

  property TabOrder: TTabOrder;

  

Determines the sequence of control navigation when the user presses the Tab key.

  property TabStop: Boolean;

  

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

  property Visible: Boolean;

  

Allows the control, and all of its children, to be displayed or hidden.

end;

Inheritance

TCheckGroup

  

TCheckGroup is a group of Check Boxes physically and logically grouped together on a form.

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TCustomCheckGroup

  

TCustomCheckGroupis the base type for TCheckGroup.

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TCustomGroupBox

  

The base class for TGroupBox, TRadioGroup and TCheckGroup.

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TWinControl

  

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

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TControl

  

The base class for visible controls.

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TLCLComponent

  

The base class for LCL components which have an associated widget.

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TComponent

?

TObject

Description

TCheckGroup is a group of Check Boxes physically and logically grouped together on a form.

To use this control, place it in the required position on the form, then either right-click on the control to see the pop-up CheckGroup editor, or in the Object Inspector select Items and click on the ellipsis (...) to open the string editor. In either case, type in the captions to accompany each check box, then close the string or CheckGroup editor and you will see a series of boxes with their captions displayed beside them.

Inherits properties from TCustomCheckGroup and TCustomGroupBox.

See also

TRadioGroup

  

TRadioGroup is a group of related but mutually exclusive radio buttons, requiring the user to select one of a set of alternatives.

How To Use Standard Controls

  

How to use StdCtrls, ComCtrls or ExtCtrls.

The latest version of this document can be found at lazarus-ccr.sourceforge.net.