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MyComponent.mxml
<?xml version="1.0" encoding="utf-8"?>
<mx:Canvas xmlns:mx="http://www.adobe.com/2006/mxml" width="180" height="94" creationComplete="initComponent()">
<mx:Metadata>
/**
* 1. ±àÒëÆÚ¼äÖ´ÐÐ
* 2. ×Ô¶¨Òå×é¼þÒ»°ã¿ÉÒÔͨ¹ýdispatchEventίÅÉparentÀ´´¦Àíij¸öʼþ£¬Õâ¾ÍÐèÒªÔÚparentÖÐÉèÖÃÒ»¸öaddEventListerÀ´¼àÌýʼþ¡£
* ¾ÍÏñButtonµÄEvent.CLICKʼþ£¬³ýÁË¿ÉÒÔͨ¹ýaddEventLister(Event.CLICK, clickHandle)À´¼àÌý´¦ÀíÍ⣬ÔÚFlex×é¼þÖл¹¿ÉÒÔ
* Ö±½Ó mx:Button click="clickHandle(event)" / ¡£Ôõô¶¨Òå×Ô¶¨Òå×é¼þÒ²¿ÉÒÔ´ïµ½Èç´ËЧ¹ûÄØ£¿
* 2.1) ÄÚ²¿ÉùÃ÷£º[Event(name="commit",type ="laxino.MyEvent")]£¬typeÊÇָʼþµÄÀàÐÍ£¨Èç1µÄÀàÐÍÊÇint,'aaa'µÄÀàÐÍÊÇString£©,nameÊÇÖ¸
* EventÖеĹ¹Ô캯ÊýÖÐtype¡£
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/**
*
* Using the Event metadata tag
* You use the [Event] metadata tag to define events dispatched by a component so that the Flex compiler can recognize
* them as MXML tag attributes in an MXML file. You add the [Event] metadata tag in one of the following locations:
* ActionScript components Above the class definition, but within the package definition, so that the events are bound
* to the class and not a particular member of the class.
* MXML components In the mx:Metadata tag of an MXML file.
*
*/

[Event(name="commit",type ="laxino.MyEvent")]
[Event(name="preview",type ="laxino.MyEvent")]
</mx:Metadata>
<mx:Script>
<!--[CDATA[
private function initComponent():void
{

}

private function preview(event:Event):void
{
this.dispatchEvent(new MyEvent(MyEven


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var login:infoChange=infoChange(PopUpManager.createPopUp( this, infoChange , true));
     login.x=250;
     login.y=150;
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£¨1£©treeµã»÷ʼþpublic function handleList(ev:ResultEvent)
{
sourceList=ev.result as ArrayCollection;
}
private function tree_itemClick(evt:ListEvent):void {
var item:Object = Tree(evt.currentTarget).selectedItem;
if (pmtree.dataDescriptor.isBranch(item)) { ......
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