procedure Changed;

procedure Changed(const Rect: TRect);


Will mark the layer for update and calls the OnChange event, provided the change notification is not masked with BeginUpdate. If a rectangle of the changed area (Rect) is set, only this area will be updated - provided the RepaintMode of the owning TCustomImage32 instance is set to rmOptimizer.

See Also

Using Layers, TNotifiablePersistent.OnChange, TNotifiablePersistent.BeginUpdate, Rectangle Types, TCustomImage32, TCustomPaintBox32.RepaintMode, TRepaintMode, Update, TLayerCollection.Owner