c#打开关闭CD/DVD光驱代码

using System.Runtime.InteropServices;
using System.Text;
...
public static void Main( )
{
int result = mciSendString
("set cdaudio door open", null, 0, IntPtr.Zero);
result =
mciSendString ("set cdaudio door closed",
null, 0, IntPtr.Zero);
}

[DllImport("winmm.dll", EntryPoint="mciSendStringA", CharSet=CharSet.Ansi)]
protected static extern int mciSendString
(string mciCommand,
StringBuilder returnValue,
int returnLength,
IntPtr callback);