Private Declare Sub keybd_event Lib "user32" (ByVal bVk As Byte,
ByVal bScan As Byte, ByVal dwFlags As Long,
ByVal dwExtraInfo As Long)

Private Sub Command1_Click()
'Captura la ventana activa
keybd_event 44, 0, 0&, 0&
End Sub

Private Sub Command2_Click()
'Captura toda la pantalla
keybd_event 44, 1, 0&, 0&
End Sub