| DirectX SDK | 
The D3DXMakeDDPixelFormat function returns a DDPIXELFORMAT structure based on the Direct3DX surface format requested.
HRESULT D3DXMakeDDPixelFormat( D3DX_SURFACEFORMAT d3dxFormat, DDPIXELFORMAT* pddpf );
If the function succeeds, the return value is S_OK.
If the function fails, the return value may be one of the following values:
| D3DXERR_NULLPOINTER | 
| D3DXERR_INVALIDPARAMETER | 
  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.