BCGControlBar Pro for MFC
BOOL CBCGPToolbarMenuButton::m_bAlwaysCallOwnerDraw

Forces the code that renders a toolbar menu button's image always call the main frame window to display the image.

When this member variable is set to TRUE, the CBCGPFrameWnd::OnDrawMenuImage function is called always to display the button's image, even the image is predefined and can be rendered by the button object itself.