Declaration

procedure ExecBitmapFrame(Dest: TBitmap32; StageNum: Integer); virtual;
procedure ExecClearBuffer(Dest: TBitmap32; StageNum: Integer); virtual;
procedure ExecClearBackgnd(Dest: TBitmap32; StageNum: Integer); virtual;
procedure ExecControlFrame(Dest: TBitmap32; StageNum: Integer); virtual;
procedure ExecCustom(Dest: TBitmap32; StageNum: Integer); virtual;
procedure ExecDrawBitmap(Dest: TBitmap32; StageNum: Integer); virtual;
procedure ExecDrawLayers(Dest: TBitmap32; StageNum: Integer); virtual;

Description

The Exec* methods are virtual paint stage execution handlers called by TCustomImage32 during buffer rendering. Each method processes a corresponding built-in stage in PaintStages.

Method	Stage Constant	Description
ExecCustom	PST_CUSTOM	Triggers the OnPaintStage event for custom drawing.
ExecClearBuffer	PST_CLEAR_BUFFER	Clears the destination buffer surface.
ExecClearBackgnd	PST_CLEAR_BACKGND	Clears background areas (solid color, checkers, pattern bitmap, borders, drop shadow) surrounding the bitmap.
ExecDrawBitmap	PST_DRAW_BITMAP	Renders the bitmap surface onto the destination buffer.
ExecDrawLayers	PST_DRAW_LAYERS	Renders visible layers matching the stage parameter mask onto the destination buffer.
ExecControlFrame	PST_CONTROL_FRAME	Draws a dotted focus frame around the control bounds during design-time.
ExecBitmapFrame	PST_BITMAP_FRAME	Draws a dotted focus frame around the scaled bitmap bounds during design-time.

See also

• Paint Stage Constants
• TPaintStages