Actionscript 3 - First steps VII - 达人(一片痴心)

2005/10/26 | Actionscript 3 - First steps VII
类别(失落的学习) | 评论(1) | 阅读(38) | 发表于 09:20: Interactivity is the soul of real experience. How can we interact with our new friend Flash 8.5? In the old days we could add handlers like on(release){} or this.onRelease = function(){} to our MovieClip instances. In ActionScript 3 we have to use a way, which is similar to that of the v2 components - addEventListener.

As we learned before, we use a Sprite object now, instead of a MovieClip.

package {
import flash.events.Event;
import flash.events.MouseEventType;
import flash.util.trace;
import flash.display.Sprite;

public class Test extends Sprite {

public function Test() {
graphics.beginFill(0xff0000);
graphics.drawRect(0, 0, 100, 100);
graphics.endFill();

this.addEventListener(MouseEventType.MOUSE_UP, mouseUpListener);
}

public function mouseUpListener( evt:Event){
trace( "Test::mouseUpListener " + this + ":" + evt);
}
}

}

In contrast to the old addEventListener in Actionscript 2 we don't have to use Delegate.create to bind a function to the scope of a handler, this is done implicitely now.; 0