[Overview][Types][Classes][Index] Reference for unit 'LazCanvas' (#lcl)

TLazCanvas.AlphaBlendIgnoringDestPixels

Performs an AlphaBlend operation assuming a white background.

Declaration

Source position: lazcanvas.pas line 128

public procedure TLazCanvas.AlphaBlendIgnoringDestPixels(

  ASource: TLazCanvas;

  const ADestX: Integer;

  const ADestY: Integer;

  const ASourceX: Integer;

  const ASourceY: Integer;

  const ASourceWidth: Integer;

  const ASourceHeight: Integer

);

Description

This is a safer version for use where the destination pixels may not be consistent or valid. It will draw as if the target area contained opaque white pixels.

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