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

TPaintBox

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

TPaintBox: a painted rectangular box with defined size and color

Declaration

Source position: extctrls.pp line 437

type TPaintBox = class(TGraphicControl) end;

protected

  class procedure WSRegisterClass; override;

  

Registers this component class with the current WidgetSet.

  procedure Paint; override;

  

Override this method with your own painting code.

  class function GetControlClassDefaultSize; override;

  

Returns the default size for this class of controls (when added to a form).

public

  constructor Create(); override;

  

Create - constructor for TPaintBox: calls inherited Create then sets initial bounds and style

  property Canvas: TCanvas;

  

A clipped window into the parent Canvas.

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 BorderSpacing: TControlBorderSpacing;

  

Determines the inner and outer border spacing for this control.

  property Color: TColor;

  

The background color of the control.

  property Constraints: TSizeConstraints;

  

The minimal and maximal Width and Height of this 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 Hint: TTranslateString;

  

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

  property ParentColor: Boolean;

  

If true, the Color of the control will be the same as the one from the Parent. 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 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 Visible: Boolean;

  

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

  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 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;

  

Notification handler for downward movement of mouse wheel.

  property OnMouseWheelUp: TMouseWheelUpDownEvent;

  

Notification handler for upward movement of mouse wheel.

  property OnPaint: TNotifyEvent;

  

Supply your own OnPaint handler for painting the control.

  property OnResize: TNotifyEvent;

  

Notification handler for a resize of the control.

  property OnStartDrag: TStartDragEvent;

  

Event handler for the start of a dragging operation.

Inheritance

TPaintBox

  

TPaintBox: a painted rectangular box with defined size and color

|

TGraphicControl

  

TGraphicControl is the base class for all lightweight controls.

|

TControl

  

The base class for visible controls.

|

TLCLComponent

  

The base class for LCL components associated with widgets.

|

TComponent

?

TObject

Description

TPaintBox: a painted rectangular box with defined size and colour

See also

HowToUseStdCtrls

  

How to use StdCtrls, ComCtrls or ExtCtrls

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