I have a problem with my TTreeView Component, i have add my own methode OnCustomDraw Sender.Canvas.Brush.Color := clGreen; Sender.Canvas.Rectangle(ARect); Sender.Canvas.FillRect(ARect); DefaultDraw := True; Just to draw a green background for test purpose. This code is working well as a VCL-Form App, but as a nested form from as follow TYPE TMainFrame = CLASS(TFrame) When i use them in a WelcomePage Plugin, it does not work. It just drawed the white Background, also the Color Property is ignored.   Does anybody has a hint for me?