2 command buttons on a form

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

Private Sub Command1_Click()
Dim lngReturn As Long
Dim strReturn As Long

'open the CD door
lngReturn = mciSendString("set CDAudio door open", strReturn, 127, 0)
End Sub

Private Sub Command2_Click()
Dim lngReturn As Long
Dim strReturn As Long

'close the CD door
lngReturn = mciSendString("set CDAudio door closed", strReturn, 127, 0)
End Sub