'Capturar la pantalla entera o la ventana activa:
'Añada dos botones y escriba el siguiente código
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