as3中的embed

actionscript3允许把外部swf直接用Embed标记嵌入到主类中(当然用UrlLoader动态加载也行)

原 作者：菩提树下的杨过
出处：http://yjmyzz.cnblogs.com

关键点：

设计师把素材放入到库中时，一定要指定类名，这样代码才能创建这些类的实例。

如上图所示，这里库中放了三种基本的素材(按钮，位图，电影夹)，然后在代码中可以这样处理：

 1 package
 2 {
 3
 4     import flash.display.Sprite;
 5     import flash.display.DisplayObject;
 6     import flash.display.SimpleButton;
 7     import flash.events.MouseEvent;
 8     import flash.display.MovieClip;
 9     import flash.display.BitmapData;
10     import flash.display.Bitmap;
11
12
13     public class Demo extends MovieClip
14     {
15         [Embed(source = "skin.swf",symbol = "ButtonPause")]
16         private var ButtonPause:Class;
17
18         [Embed(source = "skin.swf",symbol = "ButtonPlay")]
19         private var ButtonPlay:Class;
20
21         [Embed(source = "skin.swf",symbol = "LogoImage")]
22         private var LogoImage:Class;
23
24         [Embed(source = "skin.swf",symbol = "TestMovie")]
25         private var TestMovie:Class;
26
27
28         public function Demo()
29         {
30             init();
31         }
32
33         private function init():void
34         {
35             var btnTest:SimpleButton = new ButtonPause() as SimpleButton;
36             trace(btnTest,btnTest is SimpleButton);//Demo_ButtonPause0,true
37             addChild(btnTest);
38             btnTest.x = btnTest.y = 50;
39             btnTest.addEventListener(MouseEvent.CLICK,btnTestClick);
40
41             var btnTest2:SimpleButton = new ButtonPlay() as SimpleButton;
42             trace(btnTest2);//Demo_ButtonPlay1
43             addChild(btnTest2);
44             btnTest2.y = 50;
45             btnTest2.x = 100;
46             btnTest2.addEventListener(MouseEvent.CLICK,btnTest2Click);
47
48
49             var bmd:Bitmap = new LogoImage() as Bitmap;
50             trace(bmd);//Demo_LogoImage2
51             addChild(bmd);
52             bmd.x = bmd.y = 200;
53
54             var testMovie:MovieClip = new TestMovie() as MovieClip;
55             addChild(testMovie);
56             testMovie.x = testMovie.y = 180;
57             trace(testMovie);//Demo_TestMovie3
58
59         }
60
61         private function btnTestClick(e:MouseEvent):void
62         {
63             trace("btnTest 被点击了!");
64         }
65
66         private function btnTest2Click(e:MouseEvent):void
67         {
68             trace("btnTest2 被点击了!");
69         }
70     }
71
72 }