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

TGroupBox

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

A container that allows a number of objects to be grouped physically and conceptually on a form.

Declaration

Source position: stdctrls.pp line 184

type TGroupBox = class(TCustomGroupBox)

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 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;

  

The text describing the control to the user.

  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 Constraints: TSizeConstraints;

  

The minimum and maximum Width and Height for the control.

  property DockSite: Boolean;

  

Allows controls to be drag-dock'd into this 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 DragKind: TDragKind;

  

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

  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 ParentBackground: Boolean;

  

Indicates if the control uses the background from the parent.

  property ParentBidiMode: Boolean;

  

Allows to use the BiDiMode settings in the Parent control. 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 ParentFont: Boolean;

  

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

  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.

  property OnChangeBounds: TNotifyEvent;

  

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

  property OnClick: TNotifyEvent;

  

Notification handler for mouse clicks.

  property OnContextPopup: TContextPopupEvent;

  

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

  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 OnDockDrop: TDockDropEvent;

  

Notification handler for the drop of a control to be docked.

  property OnDockOver: TDockOverEvent;

  

Event handler for moves of a control over this docksite; determines acceptance or rejection of an possible drop.

  property OnDragOver: TDragOverEvent;

  

Event handler for a control being dragged over this control.

  property OnEndDock: TEndDragEvent;

  

Notification handler for the end of a docking operation.

  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 OnGetSiteInfo: TGetSiteInfoEvent;

  

Provides information about the DockSite for 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 OnStartDock: TStartDockEvent;

  

Event handler for the start of a docking operation.

  property OnStartDrag: TStartDragEvent;

  

Event handler for the start of a dragging operation.

  property OnUnDock: TUnDockEvent;

  

Event handler for control being undocked from this DockSite.

  property OnUTF8KeyPress: TUTF8KeyPressEvent;

  

Handler for a character entered by the user.

end;

Inheritance

TGroupBox

  

A container that allows a number of objects to be grouped physically and conceptually on a form.

|

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.

|

TControl

  

The base class for visible controls.

|

TLCLComponent

  

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

|

TComponent

?

TObject

Description

TGroupBox is a TCustomGroupBox descendant which implements a visual component used to organize related controls into a group. It acts as a container for controls added to the component, and is assigned as the parent for each control.

TGroupBox sets the visibility for properties defined in ancestor classes.

See also

HowToUseStdCtrls

  

How to use StdCtrls, ComCtrls or ExtCtrls.

TCustomGroupBox

  

The base class for TGroupBox, TRadioGroup and TCheckGroup.

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