|Microsoft DirectX 9.0|
The put_MessageDrain method sets the window to receive window messages sent to the video renderer.
HRESULT put_MessageDrain( OAHWND Drain );
Window to post messages to.
Returns an HRESULT value.
Messages sent to the video renderer filter can be posted to another window. This member function registers the window to receive these messages. Unlike the CBaseControlWindow::put_Owner member function, this member function does not make the video window a child of another window. It is particularly useful for full-screen video renderers, which cannot be child windows.