باز و بسته کردن در CD

Private Declare Function mciSendString Lib "winmm.dll" Alias "mciSendStringA" (ByVal lpstrCommand As String, ByVal lpstrReturnString As String, ByVal uReturnLength As Long, ByVal hwndCallback As Long) As Long
Dim lngReturn As Long
Dim strReturn As Long

Private Sub Command1_Click()
lngReturn = mciSendString("set CDAudio door open", strReturn, 127, 0)
End Sub

Private Sub Command2_Click()
lngReturn = mciSendString("set CDAudio door closed", strReturn, 127, 0)
End Sub