explicitly send and receive an user-defined message, accessible to any scope

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" preinitialize="onInit()" layout="vertical">
	
	<mx:Script>
		<![CDATA[
		
			private function onInit():void {
				EventUtil.register("event3", onReceive);
			}
			
			private function onReceive(msg:Message):void {
				var from:String;
				if (msg.source==this) {
					from=" self";
				} else {
					from=" other";
				}
				output.text="Event event3 received, id="+msg.data.id+" msg="+msg.data.msg;
			}
			
			private function onSend():void {
				var e:Message=new Message("event3",this, {id:10, msg:"Hello"});
			 	EventUtil.dispatch(e);
			}
			
		]]>
	</mx:Script>
	
	<mx:Button label="Send" click="onSend()"/>
	
	<mx:Text id="output" text="output" width="300" height="100"/>
	
</mx:Application>

//EventUtil.as
package
{
	import flash.events.Event;
	import mx.core.Application;
	public class EventUtil
	{
		public static function register(eventName:String, func:Function):void {
			Application.application.stage.addEventListener(eventName,func);
		}
		
		public static function dispatch(event:Event):void {
			Application.application.stage.dispatchEvent(event);
		}
		
	}
}

//Message.as
package
{
	import flash.events.Event;

	public class Message extends Event
	{
		public var source:Object;
		public var data:Object;
		public function Message(type:String, sourceObject:Object, dataObject:Object)
		{
			super(type);
			this.source=sourceObject;
			this.data=dataObject;
		}
		
	}
}