IDirectSoundBuffer::SetVolume

  • Article

This method 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:

DSERR_CONTROLUNAVAIL
DSERR_GENERIC
DSERR_INVALIDPARAM
DSERR_PRIOLEVELNEEDED

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

OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
Header: Dsound.h.
Link Library: Dsound.lib.

See Also

IDirectSoundBuffer | IDirectSoundBuffer::GetPan | IDirectSoundBuffer::GetVolume | IDirectSoundBuffer::SetPan

 Last updated on Thursday, April 08, 2004

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