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Adds a filter to the graph and names it by using the pNameparameter.
HRESULT AddFilter( IBaseFilter * pFilter, LPCWSTR pName );
Parameters
- pFilter
- [in] Filter to add to the graph.
- pName
- [in] Name of the filter.
Return Values
Returns an HRESULTvalue that depends on the implementation. HRESULTcan be one of the following standard constants, or other values not listed.
E_FAIL Failure. E_POINTER Null pointer argument. E_INVALIDARG Invalid argument. E_NOTIMPL Method isn't supported. S_OK or NOERROR Success. Remarks
The name of the filter can be NULL, in which case the filter graph manager will generate a name. If the name is not NULL and is not unique, this method will modify the name in an attempt to generate a new unique name. If this is successful, this method returns VFW_S_DUPLICATE_NAME. If it cannot generate a unique name, it returns VFW_E_DUPLICATE_NAME.
AddFiltercalls the filter's IBaseFilter::JoinFilterGraphmethod to inform the filter that it has been added. AddFiltermust be called before attempting to use the IGraphBuilder::Connect, IFilterGraph::ConnectDirect, or IGraphBuilder::Rendermethod to connect or render pins belonging to the added filter.