| Microsoft DirectX 8.1 (C++) | 
Sets the DPN_SP_CAPS structure for the specified service provider.
HRESULT SetSPCaps( const GUID *const pguidSP, const DPN_SP_CAPS *const pdpnSPCaps, const DWORD dwFlags, );
Returns S_OK if successful, or one of the following error values.
| DPNERR_INVALIDOBJECT | 
| DPNERR_INVALIDPARAM | 
| DPNERR_INVALIDPOINTER | 
| DPNERR_UNINITIALIZED | 
This method sets parameters for the specified service provider. A successful call to Initialize must be made before this method can be called. Currently only the dwNumThreads member can be set by this call; dwFlags must be 0.
  Windows NT/2000/XP: Available as a redistributable for Windows 2000 and later.
  Windows 98/Me: Available as a redistributable for Windows 98 and later.
  Header: Declared in Dplay8.h.