IDirectSoundBuffer8::SetPan Method
[The feature associated with this page, DirectSound, is a legacy feature. It has been superseded by WASAPI and Audio Graphs. Media Casting have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use Media Casting instead of DirectSound, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The SetPan method sets the relative volume of the left and right channels.
Syntax
HRESULT SetPan(
LONG lPan
)
Parameters
- lPan
Relative volume between the left and right channels.
Return Value
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:
| Return code |
| DSERR_CONTROLUNAVAIL |
| DSERR_GENERIC |
| DSERR_INVALIDPARAM |
| DSERR_PRIOLEVELNEEDED |
Remarks
The returned value is measured in hundredths of a decibel (dB), in the range of DSBPAN_LEFT to DSBPAN_RIGHT. These values are defined in Dsound.h as -10,000 and 10,000 respectively. The value DSBPAN_LEFT means the right channel is attenuated by 100 dB and is effectively silent. The value DSBPAN_RIGHT means the left channel is silent. The neutral value is DSBPAN_CENTER, defined as 0, which means that both channels are at full volume. When one channel is attenuated, the other remains at full volume.
The pan control acts cumulatively with the volume control.
Requirements
Header: Declared in DSound.h.
Library: Use Dsound3d.dll.