The IDirectSound3DListener::SetDistanceFactor method sets the current distance factor.
HRESULT SetDistanceFactor(
D3DVALUE flDistanceFactor,
DWORD dwApply
);
DS3D_DEFERRED | Settings are not applied until the application calls the IDirectSound3DListener::CommitDeferredSettings method. This allows the application to change several settings and generate a single recalculation. |
DS3D_IMMEDIATE | Settings are applied immediately, causing the system to recalculate the 3-D coordinates for all 3-D sound buffers. |
If the method succeeds, the return value is DS_OK.
If the method fails, the return value may be DSERR_INVALIDPARAM.
For additional information about distance factors, see Distance Factor.