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Retrieves an identifier for the pin.
HRESULT QueryId( LPWSTR * Id );
Parameters
- Id
- Pin identifier.
Return Values
Returns an HRESULTvalue.
Remarks
This member function implements the IPin::QueryIdmethod. It overrides the CBasePin::QueryIdmember function and assigns the string "In" to Id. Note that it uses the Microsoft Win32 CoTaskMemAllocfunction to initialize Id, so the user is responsible for freeing the format block by using CoTaskMemFree.