Flex4中的拖动技术

下面列一个最简单的例子，在Flex中，拖动原来如此简单

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<?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:Script>         <![CDATA[             private function startMove(event:Event):void{                 Sprite(event.target).startDrag();               }                  private function stopMove(event:Event):void{                 Sprite(event.target).stopDrag();               }              ]]>     </fx:Script>     <fx:Declarations>         <!-- 将非可视元素（例如服务、值对象）放在此处 -->     </fx:Declarations>            <mx:Button id="btn" mouseDown="startMove(event)" mouseUp="stopMove(event)" label="move"/> </s:Application>

如果需要拖动的时候多个控件可以一起拖动，可以先用BorderContainer组件先把控件包含进来

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<?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:Script>             <![CDATA[                 private function startMove(event:Event):void{                     Sprite(bc).startDrag();                   }                      private function stopMove(event:Event):void{                     Sprite(bc).stopDrag();                   }                                  ]]>         </fx:Script>        <fx:Declarations>         <!-- 将非可视元素（例如服务、值对象）放在此处 -->     </fx:Declarations>     <s:BorderContainer id="bc" x="80" y="92" width="250" height="200" mouseDown="startMove(event)" mouseUp="stopMove(event)"  borderVisible="true">         <s:Button x="62" y="62" label="按钮"/>         <s:Button x="62" y="124" label="按钮"/>     </s:BorderContainer> </s:Application>