http://www.insideria.com/2009/10/easy-flex-skinning-with-firewo.html

http://onflex.org/learn/fx4/index.php?page=States

看完这篇文章后，想到一个问题，如何用编程的方式实现切换呢，找了参考资料，实现了一个例子，代码如下：

开发环境：Flash Builder 4 Beta2

• Clear Data Builder，这是个Eclipse插件，可以根据SQL语句或Java数据传输对象为BlazeDS或LCDS自动生成CRUD应用。
• DTO2Fx，该插件会根据Java类型自动生成对应的ActionScript类。
• Log4Fx是个构建于Flex logging API之上的Eclipse插件，它会自动化日志处理并且更加灵活，也更加友好。
• Fx2Ant插件会为Flex Builder项目生成优化的Ant构建脚本。
• clear.swc是个增强的Flex组件库。

暂时用不到这个工具，记录留待备查。

• blazeds.war - The primary BlazeDS WAR file: use this as a starting point for building your BlazeDS application.
• samples.war - Sample BlazeDS applications.
• ds-console.war - Simple monitoring application for BlazeDS deployments.

原文如下：
Events are an important way for objects to communicate. They are essential for creating flexible systems. Flash Player 9, for example, has a built-in event dispatching mechanism in the flash.events.EventDispatcher class. All classes that dispatch events inherit from EventDispatcher (e.g., NetStream and Sprite). If you want to define a class that dispatches events, you can extend EventDispatcher, as follows:

package {
    import flash.events.EventDispatcher;
    public class Example extends EventDispatcher {

    }
}

The EventDispatcher class has public methods called addEventListener( ) and removeEventListener( ) that you can call from any instance of an EventDispatcher subclass to register event listeners. EventDispatcher also defines a protected method called dispatchEvent( ), which you can call from within a subclass to dispatch an event. The dispatchEvent( ) method requires at least one parameter as a flash.events.Event object or a subclass of Event.