I want to have a MDI application with OpenGL enabled on child forms. additionally each form can have controls than OpenGL. I have tried Nehe's lessons but all of them have used an infinite loop to call glDraw function which can not be done in MDI application as there may be multiple forms opened simultaneously. I need a replacement of OnDraw function of CView class in VC++. I have tried to overried OnPaint event of Form but it is not usefull as image disappears if you resize window etc.