And Now An Example That Works

Alright then, updating to Actionscript 3 the example linked in the previous post which was Actionscript 2, we get something that works, like this...

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" creationComplete="initApp(event)">
    <mx:Script>
    <![CDATA[
             import flash.events.Event;
             import flash.events.MouseEvent;
             import mx.containers.Panel;
             import mx.controls.Alert;
             import mx.controls.Button;
             import mx.controls.Label;
             import mx.controls.TextInput;

             public var submit_button:Button = null;
             public var first_text:TextInput = null;

             public function initApp(event:Event):void {
                 var panel:Panel = new Panel();
                 panel.title = "Hello World";
                 addChild(panel);

                 var label:Label = new Label();
                 label.text = "First Name";
                 panel.addChild(label);

                 first_text = new TextInput();
                 first_text.text = "Patrick";
                 panel.addChild(first_text);

                 submit_button = new Button();
                 submit_button.label = "Submit";
                 panel.addChild(submit_button);

                 submit_button.addEventListener(MouseEvent.MOUSE_UP, onMouseUp);
             }

             public function onMouseUp(event:MouseEvent):void {
                 Alert.show("Hello " + first_text.text + "!", "Message");
             }
       ]]>
    </mx:Script>
</mx:Application> 

If you have the free Flex 2 SDK you can compile and run it like this...

$ mxmlc something_else.mxml
Loading configuration file /home/patrick/flex2/frameworks/flex-config.xml
/home/patrick/dev/patrick.logan/flashstuff/formstuff/something_else.swf (143036 bytes)
$ flashplayer something_else.swf