flex加载外部swf文件，并且互相通讯
从网上转载的，还没时间鉴定，暂记录在这里
http://blog.csdn.net/zyjasp/archive/2008/05/16/2452175.aspx
第一步:建立加载类[CtmObjLoader],此类可以加载文件类型 [图片文件或swf文件]
package
{
import flash.display.DisplayObject;
import flash.display.Loader;
import flash.events.*;
import flash.net.URLRequest;
import mx.core.UIComponent;
public class CtmObjLoader extends UIComponent
{
private var ProgressHandle:Function=null;
public var loader:Loader;
public var _bLoaded:Boolean=false;
public var _bShow:Boolean=true;
//@UrlRequest 加载的地址
//@progressHandle 加载中的处理过程
//bShow 加载后是否显示出来
public function CtmObjLoader(UrlRequest:String=null,progressHandle:Function=null,bShow:Boolean=true)
{
super();
if(UrlRequest)LoadThis(UrlRequest,progressHandle,bShow);
}
public function LoadThis(UrlRequest:String,progressHandle:Function=null,bShow:Boolean=true):void{
RemoveChild();
loader = new Loader();
_bShow=bShow;
ProgressHandle=progressHandle;
configureListeners(loader.contentLoaderInfo);
if(_bShow)addChild(loader);//如果需要显示，则addchild
var request:URLRequest = new URLRequest(UrlRequest);
loader.load(request);
}
public function UnLoadThis():void{
try{
RemoveChild();
this.parent.removeChild(this);
}catch(e:Err
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