1.　　编制应用程序，让一个小球在客户区匀速移动，当碰到边界后反弹。



学有余力的同学可尝试模仿课堂演示完成用键盘控制挡板反弹小球，小球碰到砖块则把砖块打掉。

-1. Preparation of the application, so that a uniform ball moving in the client area, when it comes to the border after the rebound. Studies have spare capacity to try to mimic the classroom students can demonstrate complete control with the keyboard bezel rebound the ball, the ball hit bricks put the bricks destroyed.