The IDirectSoundCapture::GetCaps method obtains the capabilities of the capture device.
HRESULT GetCaps(
  LPDSCCAPS lpDSCCaps  
);
 If the method succeeds, the return value is DS_OK.
If the method fails, the return value may be one of the following error values:
| DSERR_INVALIDPARAM | 
| DSERR_UNSUPPORTED | 
| DSERR_NODRIVER | 
| DSERR_OUTOFMEMORY | 
| DSERR_UNINITIALIZED | 
  Windows NT/2000: Requires Windows 2000.
  Windows 95/98: Requires Windows 95 or later. Available as a redistributable for Windows 95.
  Header: Declared in dsound.h.
  Import Library: Use dsound.lib.