Hello World

AS3

My First Program in Flash

Below is the first program I ever wrote in ActionScript. It is a simple demonstration of some of the controls that are already available in the AS3 library.

Click on the button in the upper left corner to see what happens - exciting! The code for this demo is presented at the bottom of the page.

All the graphics in this example are programmatically created at run time. The following is saved as "HelloWorld.as" and added as a class to the flash file.

package {

import flash.display.Sprite;
import flash.text.TextField;
import fl.controls.Button;
import fl.events.ComponentEvent;
import fl.controls.CheckBox;
import fl.controls.List;

public class HelloWorld extends Sprite {

//Code will automatically run here...
public function HelloWorld() : void {

var b : Button = new Button;

b.label = "Click Me!";
addChild(b);
b.addEventListener(ComponentEvent.BUTTON_DOWN, ButtonHandler);

var c : CheckBox = new CheckBox;

c.label = "Click here!";
c.y = 50;
addChild(c);

var l : List = new List;

for (var i : int = 1; i <= 10; i++) {

l.addItem( { label: i.toString() } ); }

l.x = 20;
l.y = 100;
l.rowCount = 8;
addChild(l);

}

private function ButtonHandler(e : ComponentEvent) {

var t : TextField = new TextField;

t.text = "Hello World!";
t.x = 250;
t.y = 250;
addChild(t);
removeEventListener(ComponentEvent.BUTTON_DOWN, ButtonHandler);

}

}

}

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