CPosPassThru Helper Function

The CPosPassThru helper function creates a plug-in distributor (a CPosPassThru COM object) that supports IMediaSeeking and IMediaPosition.

CreatePosPassThru Creates a CPosPassThru COM object.

CreatePosPassThru

Creates a COM object that supports IMediaSeeking and IMediaPosition for single-input pin renderers and transform filters.

Syntax

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
Value indicating whether the filter supports rendering; TRUE if it does or FALSE otherwise.
pPin
Pointer to the filter's input pin.
ppPassThru
Address of a pointer to an ISeekingPassThru interface.

Return Value

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.