拖拉图片

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600">
<s:layout>
<s:BasicLayout/>
</s:layout>
<fx:Declarations>
<!-- 将非可视元素（例如服务、值对象）放在此处 -->
</fx:Declarations>



<mx:Canvas backgroundColor="#FFFFFF" mouseDown="startMove(event)" mouseUp="stopMove(event)" width="400" height="300" >
<fx:Script>
<![CDATA[
import mx.core.DragSource;
import mx.managers.DragManager;
/****************************************************************************
* 控件A
* 用于拖动，捕获mouseDown 和 mouseUp事件，触发拖动
****************************************************************************/

/**
* 鼠标按下事件处理方法
*/
private function startMove(event:Event):void
{
//Sprite 类的startDrag方法来触发拖动
Sprite(event.target).startDrag();

//其他控件感知拖动事件，需要用DragManager的doDrag 方法触发
var obj:DragSource=new DragSource();
//Data 包含，拖动时该控件的x,y 信息
var location:String=this.x+","+this.y;
obj.addData(location,"LocationFormat");
var mouseEvent:MouseEvent=new MouseEvent(MouseEvent.MOUSE_DOWN);
DragManager.doDrag(this,obj,mouseEvent);
}
/**
* 鼠标弹起事件处理方法
*/
private function stopMove(event:Event):void
{
//Sprite 类的stopDrag 方法来触发停止拖动
Sprite(event.target).stopDrag();
}


]]>
</fx:Script>
<mx:Button x="48.5" y="38" label="A" width="161" height="89" fontSize="28"/>

<mx:BubbleChart id="bu" >

</mx:BubbleChart>

</mx:Canvas>

</s:Application>