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IAudioStreamVolume::SetChannelVolume

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IAudioStreamVolume::SetChannelVolume

The SetChannelVolume method sets the volume level for the specified channel in the audio stream.

HRESULT SetChannelVolume(
  UINT32  dwIndex,
  const float  fLevel
);

Parameters

dwIndex

[in]  The channel number. If the stream format has n channels, the channels are numbered from 0 to *n *– 1. To get the number of channels, call the IAudioStreamVolume::GetChannelCount method.

fLevel

[in] The volume level for the channel. Valid volume levels are in the range 0.0 to 1.0.

Return Value

If the method succeeds, it returns S_OK. If it fails, possible return codes include, but are not limited to, the values shown in the following table.

Return code Description
E_INVALIDARG Parameter dwIndex is set to an invalid channel number, or parameter fLevel is not in the range 0.0 to 1.0.
AUDCLNT_E_DEVICE_INVALIDATED The audio endpoint device has been unplugged, or the audio hardware or associated hardware resources have been reconfigured, disabled, removed, or otherwise made unavailable for use.
AUDCLNT_E_SERVICE_NOT_RUNNING The Windows audio service is not running.

Requirements

Client: Windows Vista

Header: Include Audioclient.h.

See Also

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