Otra opción.
Código [Seleccionar]
Sub MidScreenClick()
Call SendMessage(WindowFromPoint(MidScreenX, MidScreenY), WM_LBUTTONDOWN, ByVal 0&, ByVal 0&)
Call SendMessage(WindowFromPoint(MidScreenX, MidScreenY), WM_LBUTTONUP, ByVal 0&, ByVal 0&)
End Sub