IDirectSound3DBuffer::SetPosition

HRESULT SetPosition(D3DVALUE x,

D3DVALUE y, D3DVALUE z, DWORD dwApply);

Sets the sound buffer's current position, in distance units. By default, distance units are meters, but the units can be changed by using the IDirectSound3DListener::SetDistanceFactor method.

·Returns DS_OK if successful, or DSERR_INVALIDPARAM otherwise.

x, y, and z

Values whose types are D3DVALUE and that represent the coordinates of the new position vector.

dwApply

Value indicating when the setting should be applied. This value must be one of the following:

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 3D coordinates for all 3D sound buffers.