Hi,
I', writting component which using BGRABitmap for drawing theme. I inherit from TGraphicControl. Drawing works fine but I can't drop child controls (like TPanel do). So I switch parent class from TGraphicControl to TCustomControl with ControlStyle := ControlStyle + [csAcceptsControls, csOpaque]. Now I can drop childs but transparency has stopped working. It seems that TCustomControl draw first some standard background with parent color. I am lock now.
Regards