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Flex控制外部加载的swf文件[外部swf文件flex版]

1-首先写一个加载外部swf文件的类
package Package
{
 import flash.display.DisplayObject;
 import flash.display.Loader;
 import flash.events.*;
 import flash.net.URLRequest;
 
 import mx.core.UIComponent;
 import mx.events.FlexEvent;
 public class CtmObjLoader extends UIComponent
 {
  private var loader:Loader;
  private var ProgressHandle:Function=null;
  public var _bLoaded:Boolean=false;
  public function CtmObjLoader(UrlRequest:String=null,progressHandle:Function=null)
  {
   super();
   if(UrlRequest)LoadThis(UrlRequest,progressHandle);
  }
  public function LoadThis(UrlRequest:String,progressHandle:Function=null):void{
   RemoveChild();
            loader = new Loader();
            ProgressHandle=progressHandle;
            //DeleteListeners(loader.contentLoaderInfo);
            configureListeners(loader.contentLoaderInfo);
            addChild(loader);
            var request:URLRequest = new URLRequest(UrlRequest);
            loader.load(request);   
  }
  public function UnLoadThis():void{
   try{
    RemoveChild();
    this.parent.removeChild(this);
   }catch(e:Error){}
   //this=null; 
  }
  public function get content():DisplayObject{
   if(!_bLoaded)return null;
   return loader.content;
  }
  private function RemoveChild():void{
            i


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