using System.Runtime.InteropServices; //命名空间
const uint WM_APPCOMMAND = 0x319;
const uint APPCOMMAND_VOLUME_UP
= 0x0a;
const uint APPCOMMAND_VOLUME_DOWN = 0x09;
const
uint APPCOMMAND_VOLUME_MUTE = 0x08;
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError =
true)]
static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, uint
wParam, uint lParam);
private void music_Click(object sender, EventArgs e)
{
SendMessage(this.Handle, WM_APPCOMMAND, 0x200eb0, APPCOMMAND_VOLUME_MUTE *
0x10000);
}