Haxe/OpenFL - Check if sprite is clicked - haxe

Question

I am trying to create a sprite and if the sprite is clicked it prints out a message. I created a sprite but when I added a listener it gives me the errors:
src/Main.hx:26: characters 39-44 : Void -> Void should be Dynamic -> Void
src/Main.hx:26: characters 39-44 : For function argument 'listener'
I removed the listener and then it worked just fine what is the problem?
My main class:
package;
import openfl.display.Sprite;
import openfl.events.MouseEvent;
import openfl.display.SimpleButton;
class Main extends Sprite {
private var button:SimpleButton;
private var s:Spritetest;
public function new () {
super ();
this.mouseChildren = false;
this.buttonMode = true;
init();
}
public function init() {
fillBackGround(0xff00ff, 640, 960);
s = new Spritetest();
s.addEventListener(MouseEvent.CLICK, click);
addChild(s);
}
public function fillBackGround(color:Int, w:Int, h:Int) {
this.graphics.beginFill(color);
this.graphics.drawRect(0, 0, w, h);
this.graphics.endFill();
}
public function click() {
trace("test");
}
}
my Sprite class:
package;
import openfl.display.Sprite;
class Spritetest extends Sprite {
public function new() {
super();
this.graphics.beginFill(0xffffff);
this.graphics.drawRect(20 , 20, 40, 40);
this.graphics.endFill();
}
}

Answer 1

The listener function signature must be Dynamic -> Void, because an Event (or MouseEvent) object will be passed as argument when you click.
Thus it should be like that:
public function click(e:Dynamic) {
trace('test');
}
The OpenFL API mimics Flash's, and thus the addEventListener function works pretty much like documented here :
http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/events/EventDispatcher.html#addEventListener()