|Microsoft DirectX 9.0|
The QueryFilterInfo method retrieves information about the filter. This method implements the IBaseFilter::QueryFilterInfo method.
HRESULT QueryFilterInfo( FILTER_INFO *pInfo );
Pointer to a FILTER_INFO structure.
Returns S_OK or E_POINTER.
This method copies the filter's name from the CBaseFilter::m_pName member variable into the achName member of the FILTER_INFO structure. If m_pName is NULL, the method sets achName to L'\0'.
The method sets the pGraph member of the FILTER_INFO structure equal to the CBaseFilter::m_pGraph member variable, and increments the reference count. The caller must release the interface.