| DirectX SDK | 
The IDirectMusicPerformance::GetGraph method retrieves the tool graph of a performance.
HRESULT GetGraph( IDirectMusicGraph** ppGraph );
If the method succeeds, the return value is S_OK.
If it fails, the method can return one of the following error values:
| DMUS_E_NOT_FOUND | 
| E_POINTER | 
The reference count of the graph is incremented.
  Windows NT/2000: Requires Windows 2000.
  Windows 95/98: Requires Windows 95 or later. Available as a redistributable for Windows 95.
  Header: Declared in dmusici.h.
IDirectMusicPerformance::SetGraph, IDirectMusicSegment::GetGraph, IDirectMusicPerformance::SendPMsg