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Sends EC_WINDOW_DESTROYEDevent notification when a filter is removed from the filter graph.
HRESULT JoinFilterGraph( IBaseFilterGraph * pGraph, LPCWSTR pName );
Parameters
- pGraph
- Pointer to the filter graph to join.
- pName
- [in, string] Name of the filter being added.
Return Values
No return value.
Remarks
This member function overrides the CBaseFilter::JoinFilterGraphmember function. If this function determines that the filter is being notified that it is leaving the filter graph ( pGraphis null, but m_pGraphis not), it sends an EC_WINDOW_DESTROYEDevent notification so that the resource manager does not hold on to the renderer as a focus object.