This header is used by DirectShow. For more information, see:
mixerocx.h contains the following programming interfaces:
Interfaces
| IMixerOCX The IMixerOCX interface is implemented on the Overlay Mixer. |
| IMixerOCXNotify The IMixerOCXNotify interface is implemented by clients and called by the Overlay Mixer to send notifications of events affecting the video display rectangle. |