本程序是设计一个在视图上显示一个红色的圆的程序，并沿设定的方向做直线运动，碰到边界后翻转，按反弹的方向运动本程序主要是让大家熟悉在窗口上绘制图像-This program is designed to display a red circle a program on view and do along the direction set by linear motion, after flipping across the border, in the direction of movemen

该程序是用一个单文档程序实现绘制圆和直线两种图像，并利用串行化技术保存图形数据，对于初学者有很大帮助-The program is a single document to draw a circle and a straight line to realize two kinds of image, and using technology to save the serial pattern data, are very helpful for beginners