/**     * 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 >