Stuff

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace opencd
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void btnopen_Click(object sender, EventArgs e)
        {
            int ret = mciSendString("set cdaudio door open", null, 0, IntPtr.Zero);
        }

        private void btnclose_Click(object sender, EventArgs e)
        {
            int ret = mciSendString("set cdaudio door closed", null, 0, IntPtr.Zero);
        }
        [DllImport("winmm.dll", EntryPoint = "mciSendStringA", CharSet = CharSet.Ansi)]
        protected static extern int mciSendString(string lpstrCommand,
                                                   StringBuilder lpstrReturnString,
                                                   int uReturnLength,
                                                   IntPtr hwndCallback);
    }
}