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<blockquote data-quote="Efros" data-source="post: 77476" data-attributes="member: 18068">Don't know if this is of any use but stumbled upon this code fragment which uses winmm.dll to open and close the cd tray[code]using System;using System.Drawing;using System.Text;using System.Windows.Forms;using System.Runtime.InteropServices;&nbsp;namespace WindowsApplication1{&nbsp; &nbsp; public partial class Form1 : Form&nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; public Form1()&nbsp; &nbsp; &nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; InitializeComponent();&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; private void button1_Click(object sender, EventArgs e)&nbsp; &nbsp; &nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int ret = mciSendString(&quot;set cdaudio door open&quot;, null, 0, IntPtr.Zero);&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; }&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; private void button2_Click(object sender, EventArgs e)&nbsp; &nbsp; &nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int ret = mciSendString(&quot;set cdaudio door closed&quot;, null, 0, IntPtr.Zero);&nbsp; &nbsp; &nbsp; &nbsp; }&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; [DllImport(&quot;winmm.dll&quot;, EntryPoint = &quot;mciSendStringA&quot;, CharSet = CharSet.Ansi)]&nbsp; &nbsp; &nbsp; &nbsp; protected static extern int mciSendString(string lpstrCommand,&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; StringBuilder lpstrReturnString,&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; int uReturnLength,&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; IntPtr hwndCallback);&nbsp;}&nbsp;}[/code]</blockquote>

[QUOTE="Efros, post: 77476, member: 18068"] Don't know if this is of any use but stumbled upon this code fragment which uses winmm.dll to open and close the cd tray [code] using System; using System.Drawing; using System.Text; using System.Windows.Forms; using System.Runtime.InteropServices; namespace WindowsApplication1 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { int ret = mciSendString("set cdaudio door open", null, 0, IntPtr.Zero); } private void button2_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); } } [/code] [/QUOTE]

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