/**     
* 图片拖拽     
*/     
public function dragHandler(event:MouseEvent):void{        
         //CurrentTarget指定要实现拖拽事件的初始化目标        
        var dragInitiator:Image=event.currentTarget as Image;        
        // 定义拖拽挂载数据源        
        var dragSource:DragSource = new DragSource();        
        //向对象添加数据        
        dragSource.addData(dragInitiator.source,"img");        
        //创建一个拖拽对象的代理作为拷贝        
        var dragProxy:Image=new Image();        
        dragProxy.source=event.currentTarget.source;        
        //使用DragManager静态方法doDrag开始拖拽        
        DragManager.doDrag(dragInitiator,dragSource,event,dragProxy);        
}        
private function dragEnterHandler(event:DragEvent):void{        
             var dropTarget:Image=event.currentTarget as Image;        
             DragManager.acceptDragDrop(dropTarget);        
            }        
private function dragDropHandler(event:DragEvent):void{        
        img_main.source=event.dragSource.dataForFormat("img");        
}     

<!--  拖拽 -->     
         < s:Panel  x ="10"  y ="285"  width ="250"  height ="204"  baseColor ="#EF5D5D" >     
                 < mx:Image  x ="55"  y ="13"  width ="131"  height ="132"         
                         id ="img_main"  source ="image/mt.jpg"         
                         dragDrop ="dragDropHandler(event)"  dragEnter ="dragEnterHandler(event)" />     
         </ s:Panel >     
         < s:Group  x ="268"  y ="289"  width ="200"  height ="200" >     
                 < mx:Image  x ="28"  y ="36"  width ="60"  height ="78"  id ="img_1"  source ="image/java.jpg"         
                         mouseMove ="dragHandler(event)" />     
                 < mx:Image  x ="111"  y ="39"  width ="73"  height ="75"  id ="img_2"  source ="image/mt.jpg"         
                         mouseMove ="dragHandler(event)" />     
         </ s:Group >