摘要： package{importflash.display.Bitmap;importflash.display.BitmapData;importflash.display.Loader;importflash.display.Sprite;importflash.events.Event;importflash.events.MouseEvent;importflash.net.URLLoader;importflash.net.URLRequest;publicclassMainextendsSprite{privatevarxiao_tu:Bitmap;//原小图privatevarda_ 阅读全文