Group element add event
<?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" xmlns:s="library://ns.adobe.com/flex/spark"> <mx:Script> import spark.components.Button; import spark.events.ElementExistenceEvent; private function handleElementAdd( evt:ElementExistenceEvent ):void { trace( (evt.element as Button).label + " has been added." ); } </mx:Script> <s:Group elementAdd="handleElementAdd(event);"> <mx:Button depth="100" label="button 1" /> <mx:Button label="button 2" /> </s:Group> </mx:Application>