If I use the VPE ActiveX from Visual C++ in a CFormView derived class, the control is not updated after a call to CFormView::Invalidate() or CDocument::UpdateAllViews().
A: Set the style of the dialog resource containing the VPE ActiveX to "Clip Children" (do not change the style in PreCreateWindow()). You can also call CVpeControl::UpdateWindow() in the overridden CFormView ::OnUpdate() method.