Sent when the VMR-7's allocator presenter has called the DirectDraw Flip method on the surface being presented. This allows the VMR to keep its DirectXVA table of surfaces synchronized with DirectDraw's flipping chain.
(HRESULT) Status code returned from the DirectDraw Flip method.
Custom allocator-presenters for the VMR-7 should send this event. This event is not forwarded to applications and it is not used with allocator-presenters for the VMR-9.