AS 3.0 影片剪辑播放控制

 //初始化
mymc.stop();
//播放
function playAnimaction(evt:MouseEvent):void{
 mymc.play(); 
 //移除倒放时间侦听
 mymc.removeEventListener(Event.ENTER_FRAME,everyframe); 
}
//暂停
function stopAnimaction(evt:MouseEvent):void{
   mymc.stop();
   mymc.removeEventListener(Event.ENTER_FRAME,everyframe);
}
//逐帧向前播放
function nextAnimaction(evt:MouseEvent):void{
 mymc.nextFrame();
 mymc.removeEventListener(Event.ENTER_FRAME,everyframe);
}
//逐帧向后播放
function prevAnimaction(evt:MouseEvent):void{
 mymc.prevFrame();
 mymc.removeEventListener(Event.ENTER_FRAME,everyframe); 
}
//倒放
function everyAnimaction(evt:MouseEvent):void{
 mymc.addEventListener(Event.ENTER_FRAME,everyframe);
}
//跳转
function gotoAnimaction(evt:MouseEvent):void{
 mymc.gotoAndStop(20);
 mymc.removeEventListener(Event.ENTER_FRAME,everyframe);
}
//自定义倒放函数
function everyframe(evt:Event):void{
 //若当前帧为第一帧 跳到最后播放
 if(mymc.currentFrame == 1){
  mymc.gotoAndStop(mymc.totalFrames);
 }else{
  mymc.prevFrame();
 }   
}
//注册按钮侦听
btn_play.addEventListener(MouseEvent.CLICK,playAnimaction);
btn_stop.addEventListener(MouseEvent.CLICK,stopAnimaction);
btn_next.addEventListener(MouseEvent.CLICK,nextAnimaction);
btn_prev.addEventListener(MouseEvent.CLICK,prevAnimaction);
btn_every.addEventListener(MouseEvent.CLICK,everyAnimaction);
btn_goto.addEventListener(MouseEvent.CLICK,gotoAnimaction);