property AlphaHit: Boolean;
AlphaHit determines how the layer performs its HitTest.
If AlphaHit=False, layer only passes points inside the rectangle returned by GetAdjustedLocation.
If AlphaHit=True, layer checks the opacity of the pixel lying under the specified point and passes the hit test only when the alpha channel of the pixel is greater when zero.
TCustomLayer.HitTest, TPositionedLayer.GetAdjustedLocation
Copyright ©2000-2024 Alex Denisov and the Graphics32 Team - Graphics32 2.0 - Help file built on 18 Feb 2024