more traditional event listener stuff

00-custom-app/CustomApp.as

@@ -1,17 +1,14 @@
 package
 {
     import mx.core.Application;
-    import mx.controls.Button;
     import flash.events.MouseEvent;
 
 
     public class CustomApp extends Application
     {
-        public var mutton:Button;
 
         function CustomApp()
         {
-            mutton.addEventListener(MouseEvent.CLICK, butterCup);
         }
 
         public function butterCup(event:MouseEvent):void

00-custom-app/Snarf.mxml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <me:CustomApp xmlns:mx="http://www.adobe.com/2006/mxml"
     xmlns:me="*" layout="absolute">
-    <mx:Button id="mutton" label="howdy" />
+    <mx:Button id="mutton" label="howdy" click="butterCup(event)" />
 </me:CustomApp>