通用拖放类

来源：互联网发布：手机淘宝查物流怎么查编辑：程序博客网时间：2024/05/09 22:18

package com
{
import flash.events.MouseEvent;

import mx.core.UIComponent;

public class drapdrop_utils
{
  public function set_drapdrop(ctrl:UIComponent):void
  {
    ctrl.addEventListener(MouseEvent.MOUSE_DOWN,ctrl_down);
  }

         // 控件自身移动。
      private function ctrl_down(e:MouseEvent):void
      {
         e.currentTarget.addEventListener(MouseEvent.MOUSE_MOVE,ctrl_move);
         e.currentTarget.addEventListener(MouseEvent.MOUSE_UP,ctrl_up);

       }

        // 开始移动
       private function ctrl_move(e:MouseEvent):void
      {
      var sele_obj:UIComponent= e.currentTarget as UIComponent;
            sele_obj.startDrag();

      }

            //移动结束
       private function ctrl_up(e:MouseEvent):void
      {
         e.currentTarget.stopDrag();
        e.currentTarget.removeEventListener(MouseEvent.MOUSE_MOVE,ctrl_move);
           e.currentTarget.removeEventListener(MouseEvent.MOUSE_UP,ctrl_up);
      }

}
}