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The IDirectSoundBuffer::SetVolumemethod changes the volume of a sound buffer.
HRESULT SetVolume( LONG lVolume );
Parameters
- lVolume
- New volume requested for this sound buffer.
Return Values
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:
Remarks
The volume is specified in hundredths of decibels (dB). Allowable values are between DSBVOLUME_MAX (no attenuation) and DSBVOLUME_MIN (silence). These values are currently defined in Dsound.h as 0 and -10,000 respectively. The value DSBVOLUME_MAX represents the original, unadjusted volume of the stream. The value DSBVOLUME_MIN indicates an audio volume attenuated by 100 dB, which, for all practical purposes, is silence. Currently DirectSound does not support amplification.
Requirements
Runs On Versions Defined in Include Link to Windows CE OS 2.12 or later. Version 2.12 requires DXPAK 1.0 or later. dsound.h dsound.lib Note This API is part of the complete Windows CE OS package as provided by Microsoft. The functionality of a particular platform is determined by the original equipment manufacturer (OEM) and some devices may not support this API.
See Also
IDirectSoundBuffer, IDirectSoundBuffer::GetPan, IDirectSoundBuffer::GetVolume, IDirectSoundBuffer::SetPan