Alert组件关闭触发的事件。

示例：

代码：

<? xml version="1.0" encoding="utf-8" ?>
<!--  http://blog.flexexamples.com/2008/05/01/detecting-when-an-alert-control-is-closed-in-flex/  -->
< mx:Application  xmlns:mx ="http://www.adobe.com/2006/mxml"
        layout ="vertical"
        verticalAlign ="middle"
        backgroundColor ="white"
        creationComplete ="init();" >

     < mx:Script >
         <![CDATA[
            import mx.events.CloseEvent;
            import mx.controls.Alert;

            private var alert:Alert;

            private function init():void {
                Alert.buttonWidth = 100;
                Alert.yesLabel += " (" + Alert.YES + ")";
                Alert.noLabel += " (" + Alert.NO + ")";
                Alert.okLabel += " (" + Alert.OK + ")";
                Alert.cancelLabel += " (" + Alert.CANCEL + ")";
            }

            private function showAlert():void {
                var flags:uint = 0;
                if (yesCheckBox.selected) flags += Alert.YES;
                if (noCheckBox.selected) flags += Alert.NO;
                if (okCheckBox.selected) flags += Alert.OK;
                if (cancelCheckBox.selected) flags += Alert.CANCEL;
                if (nonModalCheckBox.selected) flags += Alert.NONMODAL;
                alert = Alert.show("The quick brown fox jumped over the lazy dog.",
                                    "title",
                                    flags,
                                    null,
                                    alert_close);
            } 

            private function alert_close(evt:CloseEvent):void {
                arrColl.addItem(evt);
            }
         ]]>
     </ mx:Script >

     < mx:ArrayCollection  id ="arrColl"   />

     < mx:ApplicationControlBar  dock ="true" >
         < mx:Button  label ="Show alert"
                click ="showAlert();"   />
     </ mx:ApplicationControlBar >

     < mx:DataGrid  id ="dataGrid"
            dataProvider =" {arrColl} "
            itemRenderer ="mx.controls.Label"
            width ="100%"
            height ="100%"   />

     < mx:HBox  width ="100%" >
         < mx:CheckBox  id ="yesCheckBox"
                label ="Alert.YES"
                width ="20%"   />
         < mx:CheckBox  id ="noCheckBox"
                label ="Alert.NO"
                width ="20%"   />
         < mx:CheckBox  id ="okCheckBox"
                label ="Alert.OK"
                width ="20%"   />
         < mx:CheckBox  id ="cancelCheckBox"
                label ="Alert.CANCEL"
                width ="20%"   />
         < mx:CheckBox  id ="nonModalCheckBox"
                label ="Alert.NONMODAL"
                width ="20%"   />
     </ mx:HBox >

</ mx:Application >