Flex 弹出窗口的例子

<?xml version="1.0" encoding="utf-8"?>
<mx:TitleWindow xmlns:mx="http://www.adobe.com/2006/mxml" 
 layout="absolute" width="310" height="184" title="Login" 
 cornerRadius="3"   showCloseButton="true" close="Close()"
 creationComplete="Init()">
 <mx:Script>
     <![CDATA[
          import mx.managers.PopUpManager;
          import mx.containers.TitleWindow;
         import flash.events.*;
         import mx.managers.PopUpManager;
         import mx.controls.Button;
         import mx.core.IFlexDisplayObject;
        
         public static var login:Login = new Login();

         public static function ShowDialog(parent:DisplayObject):void {
             PopUpManager.addPopUp(login, parent, true);
         }
            
          private function Init():void{
              this.x = this.parent.width / 2 - this.width / 2     ;
              this.y = this.parent.height / 2 - this.height / 2;
          }         
          private function Close():void{
              PopUpManager.removePopUp(this);
          }
     ]]>
 </mx:Script>
    <mx:Label x="10" y="38" text="User Name"/>
    <mx:Label x="10" y="64" text="Password"/>
    <mx:TextInput x="87" y="36"/>
    <mx:TextInput x="87" y="62"/>
    <mx:Label x="10" y="10" text="Please input your user name and password"/>
    <mx:ControlBar height="40" y="114">
        <mx:Spacer width="100%"/>
        <mx:Button label="Login"/>
        <mx:Button label="Cancel" click="PopUpManager.removePopUp(this);"/>
    </mx:ControlBar>
</mx:TitleWindow>