滚动条模块与 VB 的滚动条比较，该模块支持动态生成， 支持触发消息-rolling of the modules and VB of the rolling, the module supports dynamic generation, support trigger news

鼠标滚动时的消息事件,右击事件,左击按下事件,左击弹起事件

非常好玩的win32小程序,小球在界面滚动,包含右击左击出不同的效果 ,适合初学者学习消息的处理.-Very fun win32 applet , the ball rolling in the interface , including right-click the left hit the different effects , suitable for beginners learning process messages.