Windows microphone mute toggle code

MicMute.cs

using System;
using System.Runtime.InteropServices;

namespace Mic {
	class Mute {
		[DllImport("user32.dll")] public static extern IntPtr GetForegroundWindow();
		[DllImport("user32.dll")] public static extern IntPtr SendMessageW(IntPtr hWnd, int Msg, IntPtr wParam, IntPtr lParam);
		private const int WM_APPCOMMAND=0x319;
		private const int APPCOMMAND_MICROPHONE_VOLUME_MUTE=0x180000;
		
		public static void MicMute(IntPtr h) {
		  SendMessageW(h, WM_APPCOMMAND, h, (IntPtr)APPCOMMAND_MICROPHONE_VOLUME_MUTE);
		}

		static void Main(string[] args)
		{
			MicMute(GetForegroundWindow());
		}
	}
}

Build with:

csc.exe /t:exe /out:MicMute.exe MicMute.cs