User-Interface-Design

代码说明：

  通过编写触发对象后产生的动作执行程序完成下列任务： ①表面图、网格图或等高线图的图形显示； ②命令按钮响应绘制各类图形； ③添加菜单项实现图形窗口颜色的更改。 (Trigger objects by writing the action resulting from the implementation of the program complete the following tasks: ① surface map, contour map grid map or graphic display ② Draw a command button to respond to all kinds of graphics ③ Add menu item to change the color of graphics window.)