Actionscript has events, sort of, but there are a few issues. While doing the C# events/delegate translation into swf, I had to make some Actionscript prototype code - it may or may not be useful to you if you need events (like in C#) using Actionscript. It isn't exactly the same of course (unless you use the csswf compiler ; ), however it adds zero overhead to your file for unused events (other than a bit of stub code), so there is still something to like. The usage syntax looks like this:

anyObj.addDelegate("Press", myDelegate);

This adds a delegate to the newly generated multicast Press event. To invoke it manually, just say instance.onPress(args). To remove it say anyObj.removeDelegate("Press", myDelegate);, and (if that was the only method ref) the whole thing disappears. A delegate is just an object with an obj (instance/function ref) and a name (optional - only needed for instance methods).

You can dnld a fla at
http://debreuil.com/CSharp/csswf/swfUtil/events.fla
however it is pretty small and simple, so alternately you could just paste in the code below and go... Of course I would recommend csswf, and use that beautiful C# syntax directly, however that isn't available yet ; ) (just doing the last tests, update soon!).

Le code:

_global._oo = {};
_oo.Delegate = function(obj, name)
{ 
this.obj = obj;
this.name = name;
}
_oo.DelegateList = function(delg)
{
this._delegates = [];
if(delg.obj!=null)
this._delegates.push(delg); 
}
_oo.DelegateList.prototype._delegates = null;
_oo.DelegateList.prototype._invoke = function()
{
for(var i = 0; i < this._delegates.length; i++)
{
var d = this._delegates[i];
if(d.name != "")
d.obj[d.name].apply(d.obj, arguments);
else
d.obj.apply(null, arguments);
}
}
_oo.DelegateList.prototype._add = function(delg)
{
this._delegates.push(delg);
}
_oo.DelegateList.prototype._addList = function(delgList)
{
for(var i = 0; i < delgList._delegates.length; i++)
{
this._delegates.push(delgList._delegates[i]);
}
}
_oo.DelegateList.prototype._remove = function(delg)
{
var success = false;
for(var i = 0; i < this._delegates.length; i++)
{
if(this._delegates[i].obj == delg.obj && this._delegates[i].name == delg.name)
{
this._delegates.splice(i,1);
success = true;
}           
}
return success;
}
_oo.DelegateList.prototype._removeList = function(delgList)
{
var success = true;
for(var i = 0; i < delgList._delegates.length; i++)
{
var ret = this._remove(delgList._delegates[i]);
if(ret == false) success = false;
}
return success;
}
Object.prototype.addDelegate = function(event, delg)
{
if(this[event+"Delg"] == null)
{
this[event+"Delg"] = new _oo.DelegateList();
this["on"+event] = function()
{
arguments.callee.delgRef._invoke.apply(
arguments.callee.delgRef, arguments);
}
this["on"+event].delgRef = this[event+"Delg"];
}
this[event+"Delg"]._add(delg);
return this[event+"Delg"];
}
ASSetPropFlags(Object.prototype, ["addDelegate"], 1);

Object.prototype.removeDelegate = function(event, delg)
{
var success = this[event+"Delg"]._remove(delg);
if(this[event+"Delg"]._delegates.length == 0)
{
this[event+"Delg"] = null;
this["on"+event] = null;
}
return success;
}
ASSetPropFlags(Object.prototype, ["removeDelegate"], 1);