I tried to build an ActiveX control with a ComboBox control embedded. The problem is that the ComboBox is not drawn properly in the inactive state (the control try to redraw the entire area of dropped-down rectangle and the result is a flicker image). The same behavior is mentioned (as a bug) by Adam Denning in his book “ActiveX Controls Inside Out” 2nd edition Microsoft Press 1997, chapter 10, page 328. Unfortunately he forgot to explain how to get rid of this trouble.

Can anyone tell me what can be the cause of this problem ?

Thanks,
Max.