该程序是通过菜单栏中的绘图菜单中的长方形和圆形两个子菜单来进行绘制的，当你选择一次菜单就会在客户区看到一个新的图形，选择多次就会看到层次分明的一串图形。-The program is through the menu bar of the graphics menu of rectangular and circular two sub menu to draw, when you select a menu will see a new graphic in the client area,