| DirectX SDK | 
The ID3DXContext::GetDD method retrieves a pointer to an IDirectDraw7 interface.
LPDIRECTDRAW7 GetDD();
If the method succeeds, the method returns a pointer to an IDirectDraw7 interface.
If the method fails, NULL is returned.
Applications use the returned IDirectDraw7 interface to call DirectDraw methods.
Note that a reference count is maintained for the DirectDraw object encapsulated by a context object. So, it is the application's responsibility to release the IDirectDraw7 interface when it is no longer needed by the application.
  Windows NT/2000: Requires Windows 2000.
  Windows 95/98: Requires Windows 95 or later. Available as a redistributable for Windows 95.
  Windows CE: Unsupported.
  Version: Requires DirectX 7.0.
  Header: Declared in d3dxcore.h.
  Library: Use d3dx.lib.