请问FLEX下怎样给动态生成的按钮添加事件~TOT

Source实体类
Java code:

public class Sources{
public function Sources(){}

public var id:int;
public var title:String;
public var btnNameArr:Array; //动态生成的按钮名称集合
public var pathArr:Array; //动态打开的页面名称集合
}



前台页面传的值
Java code:

var o:Sources=new Sources();
o.id=1;
o.btnNameArr= ["采购进货","采购退货","采购单据查询"]; //字符串集合
o.pathArr = [RuHuo,TuiHuo,Select]; //页面名称的集合
o.title="进货管理";



这个是我自己定义的一个组件，source变量为主页面调用时传过来的一个实体
Java code:

public var source:Sources;

private function showBtn():void{
this.leftBtn.addEventListener(MouseEvent.CLICK,leftMove);
this.rightBtn.addEventListener(MouseEvent.CLICK,rightMove);
this.btnCanvas.x = 32;
this.btnCanvas.y = 0;
this.btnList = new ArrayCollection();
this.btnCanvas.removeAllChildren();
for(var i:int = 0; i<source.btnNameArr.length; i++){
this.btnCanvas.addChild(this.bindEvent(i));
}
}