摘要： import flash.display.Sprite;import flash.net.URLRequest;import flash.media.Sound;import flash.media.SoundChannel;//控制应用程序中的声音import flash.events.Event;import flash.events.ProgressEvent;var bar:Sprite =new Sprite();bar.graphics.beginFill(0xff00bb);bar.graphics .drawRect(0,0,350,20);bar.graphics .endF 阅读全文