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NF:mfidl.IMFSimpleAudioVolume.SetMasterVolume |
IMFSimpleAudioVolume::SetMasterVolume (mfidl.h) |
Sets the master volume level. |
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mf\imfsimpleaudiovolume_setmastervolume.htm |
mf |
42b51817-3c2a-463a-a533-19c327c57354 |
12/05/2018 |
42b51817-3c2a-463a-a533-19c327c57354, IMFSimpleAudioVolume interface [Media Foundation],SetMasterVolume method, IMFSimpleAudioVolume.SetMasterVolume, IMFSimpleAudioVolume::SetMasterVolume, SetMasterVolume, SetMasterVolume method [Media Foundation], SetMasterVolume method [Media Foundation],IMFSimpleAudioVolume interface, mf.imfsimpleaudiovolume_setmastervolume, mfidl/IMFSimpleAudioVolume::SetMasterVolume |
mfidl.h |
Windows |
Windows Vista [desktop apps only] |
Windows Server 2008 [desktop apps only] |
Mfuuid.lib |
Windows |
19H1 |
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Sets the master volume level.
Volume level. Volume is expressed as an attenuation level, where 0.0 indicates silence and 1.0 indicates full volume (no attenuation).
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
| Return code | Description |
|---|---|
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The method succeeded. |
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The audio renderer is not initialized. |
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The audio renderer was removed from the pipeline. |
Events outside of the application can change the master volume level. For example, the user can change the volume from the system volume-control program (SndVol). If an external event changes the master volume, the audio renderer sends an MEAudioSessionVolumeChanged event, which the Media Session forwards to the application.