关于键盘事件的绑定

keyboard的event只能绑定到stage上 建议不用focus地方法把事件绑定到mc上 

 

下边是一个文档类的内容

package {

import flash.display.Sprite;

import flash.events.MouseEvent;

import flash.events.KeyboardEvent;

public class DrawingDemo extends Sprite {

public var actor:Actor = new Actor();

// Constants:

// Public Properties:

// Private Properties:

 

// Initialization:

public function DrawingDemo() {

init();

}

 

private function init():void {

graphics.lineStyle(10);

stage.addEventListener(MouseEvent.MOUSE_DOWN,onMouseDownHandler);

stage.addEventListener(MouseEvent.MOUSE_UP,onMouseUpHandler);

stage.addEventListener(KeyboardEvent.KEY_DOWN, keyDownHandler);

actor.x=100;

actor.y=200;

actor.scaleX=2.5;

addChild(actor);  

}

function keyDownHandler(event:KeyboardEvent):void {

trace("11223123123");

if (event.keyCode==37) {

actor.Left();

} else if (event.keyCode==39) {

actor.Right();

} else if (event.keyCode==38) {

actor.Up();

} else if (event.keyCode==40) {

actor.Down();

}

}

private function onMouseDownHandler(event:MouseEvent):void {

graphics.moveTo(mouseX,mouseY);

stage.addEventListener(MouseEvent.MOUSE_MOVE,onMouseMoveHandler);

}

 

private function onMouseUpHandler(event:MouseEvent):void {

stage.removeEventListener(MouseEvent.MOUSE_MOVE,onMouseMoveHandler);

}

 

private function onMouseMoveHandler(event:MouseEvent):void {

graphics.lineTo(mouseX,mouseY);

}

}

}