使用C使Windows音量静音#

为P/Invoke声明:

private const int APPCOMMAND_VOLUME_MUTE = 0x80000;
private const int WM_APPCOMMAND = 0x319;

[DllImport("user32.dll")]
public static extern IntPtr SendMessageW(IntPtr hWnd, int Msg, IntPtr wParam, IntPtr lParam);

SendMessageW(this.Handle, WM_APPCOMMAND, this.Handle, (IntPtr) APPCOMMAND_VOLUME_MUTE);

您可以在Windows Vista/7和8上使用什么:

你可以用 NAudio
下载最新版本。提取DLL并引用C#项目中的DLL NAudio。

然后添加以下代码来遍历所有可用的音频设备,并在可能的情况下将其静音。

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
        {
            //Show us the human understandable name of the device
            System.Diagnostics.Debug.Print(dev.FriendlyName);
            //Mute it
            dev.AudioEndpointVolume.Mute = true;
        }
        catch (Exception ex)
        {
            //Do something with exception when an audio endpoint could not be muted
        }
    }
}
catch (Exception ex)
{
    //When something happend that prevent us to iterate through the devices
}

我偶然发现 this project 如果你运行的是Vista,这可能会很有趣。

How to programmatically mute the Windows XP Volume using C#?

void SetPlayerMute(int playerMixerNo, bool value)
{
    Mixer mx = new Mixer();
    mx.MixerNo = playerMixerNo;
    DestinationLine dl = mx.GetDestination(Mixer.Playback);
    if (dl != null)
    {
        foreach (MixerControl ctrl in dl.Controls)
        {
            if (ctrl is MixerMuteControl)
            {
                ((MixerMuteControl)ctrl).Value = (value) ? 1 : 0;
                break;
            }
        }
    }
}

您可能需要使用MCI命令: http://msdn.microsoft.com/en-us/library/ms709461(VS.85).aspx

我要补充的是,虽然这将给你很好的控制输入和输出混频器在windows中,你可能有一些困难做详细的控制,如设置麦克风升压等。

您可以使用P/Invoke,如下所述: http://www.microsoft.com/indonesia/msdn/pinvoke.aspx