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IAudioEndpointVolumeEx::GetVolumeRangeChannel method (endpointvolume.h)

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The GetVolumeRangeChannel method gets the volume range for a specified channel.

Syntax

HRESULT GetVolumeRangeChannel(
  [in]  UINT  iChannel,
  [out] float *pflVolumeMindB,
  [out] float *pflVolumeMaxdB,
  [out] float *pflVolumeIncrementdB
);

Parameters

[in] iChannel

The channel number for which to get the volume range. If the audio stream has n channels, the channels are numbered from 0 to n– 1. To obtain the number of channels in the stream, call the IAudioEndpointVolume::GetChannelCount method.

[out] pflVolumeMindB

Receives the minimum volume level for the channel, in decibels.

[out] pflVolumeMaxdB

Receives the maximum volume level for the channel, in decibels.

[out] pflVolumeIncrementdB

Receives the volume increment for the channel, in decibels.

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_POINTER
 Parameter pfLevelMinDB, pfLevelMaxDB, or pfVolumeIncrementDB is NULL.

Requirements

Requirement Value
Minimum supported client Windows 7 [desktop apps only]
Minimum supported server Windows Server 2008 R2 [desktop apps only]
Target Platform Windows
Header endpointvolume.h

See also

IAudioEndpointVolumeEx