Pass Event object to the submitForm() handler function and specifies it as type MouseEvent
<?xml version="1.0"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"> <mx:Script> private function myEventHandler(event:MouseEvent):void { trace("this is a test"); } </mx:Script> <mx:Button id="b1" label="Click Me" click="myEventHandler(event)" /> </mx:Application>