The IDirectSound3DListener::GetAllParameters method retrieves information that describes the current state of the 3-D world and listener.
HRESULT GetAllParameters(
LPDS3DLISTENER lpListener
);
If the method succeeds, the return value is DS_OK.
If the method fails, the return value may be DSERR_INVALIDPARAM.
Windows NT: Use version 5.0 or later.
Windows: Use Windows 95 or later. Available as a redistributable for Windows 95.
Windows CE: Unsupported.
Header: Declared in dsound.h.
Import Library: Use dsound.lib.
IDirectSound3DListener::SetAllParameters