if you type out something like this
myobj.addEventListener(MyEvent.MY_TYPE, onMyType, false, 0, true);

FDT would allow you to place your cursor anywhere within 'onMyType' and hit comman+1 where you would get a drop down of choices, one of them being 'generate handler' which would add this to your class.

private function onMyType(event:MyEvent):void{

}

That video I linked to earlier shows some of this going on.