Creo viewer Control AxpviewLib.Axpview

what i should do if i wanna to paint some shapes or fill an colorful rectangle box in Creo Viewer via the Graphics :"Graphics g = axpview1.CreateGraphics(); " 

in winform apps i can do this ,but it's seems doesn
't work in Creo viewer control AxpviewLib.Axpview 

in winfrom app, the rapint is okay ,you can drawing any things in winform including fill the shape with color