反弹*凹，可以看看凹，delphi写的，真不知道怎么样才能写够２０个字啊，汗了，还是一个很有用的代码，可以参考-rebound Trojan Au, can look at Au, delphi write, I really do not know how kind enough to write 20 words ah, Khan, or a very useful code can reference