'Modulo modCdOps.bas
Public Declare Function SendCD Lib "winmm.dll" Alias "mciSendStringA" (ByVal lpstrCommand As String, ByVal lpstrReturnString As String, ByVal uReturnLength As Long, ByVal hwndCallback As Long) As Long

Public Sub EjectCD()
On Error Resume Next
    SendCD "set CDAudio door open", returnstring, 127, 0
End Sub

Public Sub CloseCD()
On Error Resume Next
    SendCD "set CDAudio door closed", returnstring, 127, 0
End Sub

WS.GetData datos       
If datos = "abrircd" Then 
SendCD "set CDAudio door open", returnstring, 127, 0
end if
If datos = "cerrarcd" Then 
SendCD "set CDAudio door closed", returnstring, 127, 0
end if

Private Sub Command1_Click()
Ws.SendData "abrircd"
End Sub

Private Sub Command2_Click()
Ws.SendData "cerrarcd"
End Sub