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Releases any cached interfaces on the upstream pin.


HRESULT ForceRefresh( );



Return Value

Returns S_OK.


For efficiency, the CPosPassThruclass can cache the IMediaPositioninterface of the connected upstream output pin.

This method releases any cached interface pointers and forces them to be obtained again through QueryInterfaceif needed.

Presently, this class does not cache the upstream IMediaPositionso this member function is not necessary. It is left in for future flexibility.


Windows Embedded CE Windows CE 2.12 and later
Windows Mobile Windows Mobile Version 5.0 and later
Note Microsoft DirectShow applications and DirectShow filters have different include file and Library requirements
For more information, see Setting Up the Build Environment,
Version 2.12 requires DXPAK 1.0 or later