//----------------------------------------------------------------------------------------
//AsBroadcaster

caster = {}
AsBroadcaster.initialize(caster)
a = {message:function (a,b) {trace("a: "+a+b)}}
b = {message:function (a,b) {trace("b: "+a+b)}}
c = {message:function (a,b) {trace("c: "+a+b)}} 
caster.addListener(a)
caster.addListener(b)
caster.addListener(c) 
caster.broadcastMessage("message", "Hello ", "World!")
caster.broadcastMessage("message", "Argument ", "Support!")

/* trace
a: Hello World!
b: Hello World!
c: Hello World!
a: Argument Support!
b: Argument Support!
c: Argument Support!
*/


//----------------------------------------------------------------------------------------
//EventDispatcher

import mx.events.EventDispatcher;
var square:Object = new Object();
EventDispatcher.initialize(square);

// 写法一
myListener = new Object();
myListener.a_evt = function(evt) {
	trace("type:"+evt.type+",  target:"+evt.target+",  arg:"+evt.arg);
};
square.addEventListener("a_evt", myListener);
square.dispatchEvent({type:"a_evt", arg:"a1"});

// 写法二
function b_evt(evt) {
	trace("type:"+evt.type+",  target:"+evt.target+",  arg:"+evt.arg);
}
square.addEventListener("b_evt", {b_evt:b_evt});
square.dispatchEvent({type:"b_evt", arg:"a2"});

// 写法三
square.addEventListener("c_evt", {c_evt:function (evt) {
	trace("type:"+evt.type+",  target:"+evt.target+",  arg:"+evt.arg);
}});
square.dispatchEvent({type:"c_evt", arg:"a3"});