Question

using this code:

public class DvdRomUtility
    {
        [DllImport("winmm.dll", EntryPoint = "mciSendStringA", CharSet = CharSet.Ansi)]
        protected static extern int mciSendString(string lpstrCommand, StringBuilder lpstrReturnString, int uReturnLength, IntPtr hwndCallback);

        public static void Open(string driveName)
        {
            int ret = mciSendString("set cdaudio door open", null, 0, IntPtr.Zero);
        }
        public static void Close(string driveName)
        {
            int ret = mciSendString("set cdaudio door closed", null, 0, IntPtr.Zero);
        }
    }

i can open and close my dvd rom.
but i want know DVDrom’s door is open or close because i want a method to when i call it IF:

1- dvd rom’s door is open then dvd rom’s door will close

2- dvd rom’s door is close then dvd rom’s door will open

thanks

Answer 1

Have you take a look at “DeviceIoControl” ? See MSDN and P/Invoke.Net for samples and details, especially the StorageEjectMedia and StorageLoadMedia commands.

Edit: And for sample code, it is here.