IAudioEndpointVolume::GetMasterVolumeLevel Method

The GetMasterVolumeLevel method gets the master volume level, in decibels, of the audio stream that enters or leaves the audio endpoint device.

Syntax

public:
HRESULT GetMasterVolumeLevel(
         float *pfLevelDB
)

Parameters

pfLevelDB
Type: float *

[out] Pointer to the master volume level. This parameter points to a float variable into which the method writes the volume level in decibels. To get the range of volume levels obtained from this method, call the IAudioEndpointVolume::GetVolumeRange Method.

Return value

Type: HRESULT 

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 pfLevelDB is NULL.

Requirements

Header: Declared in endpointvolume.h.

Library: Use MMDevApi.lib.

See also

IAudioEndpointVolume

IAudioEndpointVolume Members