IAudioEndpointVolumeEx::GetVolumeRangeChannel method
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
- iChannel [in]
-
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.
- pflVolumeMinDB [out]
-
Receives the minimum volume level for the channel, in decibels.
- pflVolumeMaxDB [out]
-
Receives the maximum volume level for the channel, in decibels.
- pflVolumeIncrementDB [out]
-
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 |
|---|---|
|
Parameter pfLevelMinDB, pfLevelMaxDB, or pfVolumeIncrementDB is NULL. |
Requirements
|
Minimum supported client |
Windows 7 [desktop apps only] |
|---|---|
|
Minimum supported server |
Windows Server 2008 R2 [desktop apps only] |
|
Header |
|
See also