图形用户界面编程 （1）为计数器累编写图形界面，其中包括三个按钮:计数器加一、减一和清零 （2）编程实现一个模拟手机的图形用户界面-Graphical user interface programming 1) as the counter tired to write graphic interface, including three buttons: counter plus one, minus one and reset (2) the programming to r