FlashDevelop + MXML HelloWorld - 初めてのFlex MXML

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
    <mx:Button label="HelloWorld" id="hello"  click="onClick();" />
    
    <mx:Script>
        <![CDATA[
        import mx.controls.Alert;
        
        private function onClick():void {
            Alert.show("HelloWorld button is Clicked.");
        }
        ]]>
    </mx:Script>
</mx:Application>