|Microsoft DirectX 9.0|
The GetFiltergraph method retrieves the IGraphBuilder interface for the filter graph used by the DVD-Video graph builder object.
HRESULT GetFiltergraph( IGraphBuilder **ppGB );
[out] Address of a pointer to the IGraphBuilder interface that the DVD-Video graph builder object is using.
Returns an HRESULT value that depends on the implementation of the interface. The current DirectShow implementation returns E_INVALIDARG if ppGB is invalid.
The returned IGraphBuilder interface pointer has an outstanding reference count. The caller must release the interface.