extern const GUID IID_IKsObject;
extern const GUID IID_IKsPinEx;
extern const GUID IID_IKsAggregateControl;
extern const GUID IID_IKsPinPipe;
extern const GUID IID_IKsPinFactory;
extern const GUID IID_IKsObject;
extern const GUID IID_IKsPinEx;
extern const GUID IID_IKsAggregateControl;
extern const GUID IID_IKsPinPipe;
extern const GUID IID_IKsPinFactory;