如何使用C#在Windows 7中调整主音量?
我见过使用winmm.dll here的优秀实现,但它适用于XP,而不适用于Windows 7.
答案 0 :(得分:9)
我使用nuget包Naudio成功使用此代码:
public void SetVolume(int level)
{
try
{
//Instantiate an Enumerator to find audio devices
NAudio.CoreAudioApi.MMDeviceEnumerator MMDE = new NAudio.CoreAudioApi.MMDeviceEnumerator();
//Get all the devices, no matter what condition or status
NAudio.CoreAudioApi.MMDeviceCollection DevCol = MMDE.EnumerateAudioEndPoints(NAudio.CoreAudioApi.DataFlow.All, NAudio.CoreAudioApi.DeviceState.All);
//Loop through all devices
foreach (NAudio.CoreAudioApi.MMDevice dev in DevCol)
{
try
{
if (dev.State == NAudio.CoreAudioApi.DeviceState.Active)
{
var newVolume = (float)Math.Max(Math.Min(level, 100),0) / (float)100;
//Set at maximum volume
dev.AudioEndpointVolume.MasterVolumeLevelScalar = newVolume;
dev.AudioEndpointVolume.Mute = level == 0;
//Get its audio volume
_log.Info("Volume of " + dev.FriendlyName + " is " + dev.AudioEndpointVolume.MasterVolumeLevelScalar.ToString());
}
else
{
_log.Debug("Ignoring device " + dev.FriendlyName + " with state " + dev.State);
}
}
catch (Exception ex)
{
//Do something with exception when an audio endpoint could not be muted
_log.Warn(dev.FriendlyName + " could not be muted with error " + ex);
}
}
}
catch (Exception ex)
{
//When something happend that prevent us to iterate through the devices
_log.Warn("Could not enumerate devices due to an excepion: " + ex.Message);
}
}
答案 1 :(得分:5)
CodeProject有一个很好的样本here。请注意,它完全依赖于COM互操作(如果您对实现细节感兴趣,请检查MSDN上的IAudioEndpointVolume和IAudioMeterInformation等COM接口),并且仅适用于Vista / Win7及更高版本。
受支持的最低客户端:Windows Vista
支持的最低服务器:Windows Server 2008