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CPosPassThru Helper Function
The CPosPassThru helper function creates a plug-in distributor (a CPosPassThru COM object) that supports IMediaSeeking and IMediaPosition.
Function Description CreatePosPassThru Creates a CPosPassThru COM object. CPosPassThru Helper Function
CreatePosPassThruCreates a COM object that supports IMediaSeeking and IMediaPosition for single-input pin renderers and transform filters.
STDAPI CreatePosPassThru(
LPUNKNOWN pAgg,
BOOL bRenderer,
IPin *pPin,
IUnknown **ppPassThru
);Parameters
- pAgg
- NULL if the object is not being created as part of an aggregate; otherwise, a pointer to the aggregate object's IUnknown interface (the controlling IUnknown).
- bRenderer
- TRUE if the filter supports rendering; otherwise, FALSE.
- pPin
- Pointer to the filter's input pin.
- ppPassThru
- ISeekingPassThru interface.
Return Values
Returns S_OK if successful; otherwise, returns an HRESULT indicating the error.
Remarks
You can use this function to create a CPosPassThru object in Quartz.dll rather than from your own .dll file. The CLSID of the object is CLSID_SeekingPassThru.
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