接下来的例子演示了Flex中如何利用PopUpManager类，创建一个弹出Image控件。
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下面是完整代码(或点击这里察看)：
Download: main.mxml
1. <?xml version="1.0" encoding="utf-8"?>
2. <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
3. layout="vertical"
4. verticalAlign="middle"
5. backgroundColor="white">
6.
7. <mx:Style>
8. global {
9. modalTransparencyBlur: 0;
10. modalTransparency: 0.9;
11. modalTransparencyColor: black;
12. modalTransparencyDuration: 500;
13. }
14. </mx:Style>
15.
16. <mx:Script>
17. <![CDATA[
18. import mx.controls.Image;
19. import mx.managers.PopUpManager;
20.
21. private const IMG_PREFIX:String = "http://www.helpexamples.com/flash/images/";
22.
23. private function popIt(src:String):void {
24. var img:Image = new Image();
25. img.addEventListener(MouseEvent.CLICK, img_click);
26. img.addEventListener(Event.COMPLETE, img_complete);
27. img.load(IMG_PREFIX + src);
28. img.toolTip = img.source.toString();
29. PopUpManager.addPopUp(img, this, true);
30. }
31.
32. private function img_complete(evt:Event):void {
33. var img:Image = evt.currentTarget as Image;
34. img.width = img.contentWidth;
35. img.height = img.contentHeight;
36. PopUpManager.centerPopUp(img);
37. }
38.
39. private function img_click(evt:MouseEvent):void {
40. var img:Image = evt.currentTarget as Image;
41. PopUpManager.removePopUp(img);
42. }
43. ]]>
44. </mx:Script>
45.
46. <mx:ApplicationControlBar dock="true">
47. <mx:Button label="image 1" click="popIt('image1.jpg');" />
48. <mx:Button label="image 2" click="popIt('image2.jpg');" />
49. <mx:Button label="image 3" click="popIt('image3.jpg');" />
50. </mx:ApplicationControlBar>
51.
52. </mx:Application>
