Creating a pop-up window
To create a pop-up window, use the PopUpManager createPopUp() method. The createPopUp() method has the following signature:
public static createPopUp(parent:DisplayObject, class:Class,
modal:Boolean = false):IFlexDisplayObject
The method has the following arguments.
Argument
Description
parent
A reference to a window to pop-up over.
class
A reference to the class of object you want to create, typically a custom MXML component that implements a TitleWindow container.
modal
(Optional) A Boolean value that indicates whether the window is modal, and takes all mouse input until it is closed (true), or whether interaction is allowed with other controls while the window is displayed (false). The default value is false.
主测试文件：
01.<?xml version="1.0" encoding="utf-8"?>
02.<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
03. <mx:Style>
04. Panel{
05. fontSize:12px
06. }
07. Button{
08. fontSize:12px
09. }
10.
11. </mx:Style>
12. <mx:Script>
13. <![CDATA[
14. import mx.managers.PopUpManager;
15. import mx.containers.TitleWindow;
16. import flash.geom.Point;
17.
18.
19. private var point1:Point = new Point();
20. private function openWin():void
21. {
22. var login:Win2=Win2(PopUpManager.createPopUp(this, Win2 ,true));23. point1.x=(p1.width-login.width)/2; 24. point1.y=(p1.height-login.height)/2; 25. login.x=point1.x+35; 26. login.y=point1.y+35; 27. login.loginUserName=returnValue; 28 } 29. ]]> 30. </mx:Script> 31. <mx:Panel id="p1" x="97" y="65" width="800" height="600" layout="absolute" title="弹出窗口测试"> 32. <mx:Button id="myButton" x="257" y="302" label="Login" click="openWin()"/> 33. <mx:Text id="returnValue" text="" /> 34. </mx:Panel> 35. 36.</mx:Application>
我们通过(p1.width-login.width)/2和(p1.height-login.height)/2实现弹出窗口的居中!
PopUpManager.createPopUp( this, Win2 , true) 参数：父显示对象，要显示的对象，是否为模态窗口;
Win2.mxml
程序代码
01.<?xml version="1.0" encoding="utf-8"?>
02.<mx:TitleWindow xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" width="500" height="400"showCloseButton="true">
03. <mx:Script>
04. <![CDATA[
05. import mx.managers.PopUpManager;
06. import mx.containers.TitleWindow;
07. import flash.geom.Point;
08. import mx.controls.Text;
09.
10. private var point1:Point = new Point();
11. public var loginUserName:Text;
12. public var loginUserPwd:Text;
13. private function closeWin():void
14. {
15. PopUpManager.removePopUp(this);
16. }
17.
18. private function openNewWin():void
19. {
20. login:Win1=Win1(PopUpManager.createPopUp( this, Win1 , true));
21. point1.x=(this.width-login.width)/2;
22. point1.y=(this.height-login.height)/2;
23. login.x=point1.x+5;
24. login.y=point1.y+5;
25.
26. }
27.
28. private function loginOk():void
29. {
30 loginUserName.text=username.text;31 PopUpManager.removePopUp(this);
32. }
33. ]]>
34. </mx:Script>
35. <mx:Style>
36. Label{fontSize:12px;}
37. </mx:Style>
38. <mx:Button x="139" y="258" label="open new" click="openNewWin()"/>
39. <mx:Button x="282" y="258" label="close" click="closeWin()"/>
40. <mx:Label x="139" y="87" text="用户名："/>
41. <mx:Label x="139" y="134" text="密 码："/>
42. <mx:TextInput x="200" y="87" id="username"/>
43. <mx:TextInput x="200" y="134" id="userpwd" displayAsPassword="true"/>
44. <mx:Button x="227" y="258" label="ok" click="loginOk()"/>
45.</mx:TitleWindow>
loginUserName.text=username.text;由于loginUserName是父窗口传过来的组件，所以此句赋值就是把子窗口的返回值传到父窗口。
PopUpManager.removePopUp(this);可以移除当前弹出窗口；注意：弹出窗口的关闭按钮在默认状态时是不能关闭当前窗口的，需要使用下面两种方法：
<mx:TitleWindow xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" showCloseButton="true"close="{PopUpManager.removePopUp(this)}">或者：
<mx:TitleWindow xmlns:mx="http://www.adobe.com/2006/mxml" creationComplete="addEventListener(CloseEvent.CLOSE, closeWindow);" showCloseButton="true">
< mx:Script>
< ![CDATA[
import mx.managers.PopUpManager;
import mx.events.CloseEvent;
private function closeWindow(ev:CloseEvent):void {
PopUpManager.removePopUp(this);
}
]]>
< /mx:Script>
< /mx:TitleWindow>
