[]hitTestPrior点击穿透

package  {

	

	import laya.display.Sprite;

	import laya.events.Event;

	import laya.webgl.WebGL;



	public class PanelElastic {

		

		public function PanelElastic() 

		{

			Laya.init(800,600,WebGL);

			Laya.stage.bgColor="#EEFFCC";

			var sp:Sprite=new Sprite();

			sp.graphics.drawRect(0,0,300,300,"#FFFF00");

			sp.size(100,100);

			sp.on(Event.CLICK,this,onClickSp);

			Laya.stage.addChild(sp);

			var spchild:Sprite=new Sprite();

			spchild.graphics.drawRect(0,0,200,200,"#FF0000");

			spchild.size(200,200);

			spchild.on(Event.CLICK,this,onClickSpChild);

			sp.addChild(spchild);

		}

		

		private function onClickSpChild(e:Event):void

		{

			e.stopPropagation();

			trace("child");

		}

		

		private function onClickSp(e:Event):void

		{

			trace("sp");

		}

	}

}

怎样才能只触发box容器中的label的点击事件而不触发box的点击事件   设置hitTestPrior好像没什么用
 
测试代码如下:
//hitTestPrior
window[`hitTestPrior`] = () => {
let box1 = new Laya.Box();
box1.width = box1.height = 500;
let sp = new Laya.Sprite();
sp.graphics.drawRect(0, 0, box1.width, box1.height, `#999900`);
box1.addChild(sp);
box1.clickHandle = () => {
lizheng.log(`点击了box1`);
}
box1.hitTestPrior = false;
Laya.stage.addChild(box1);
let lab = new Laya.Label();
lab.text = "666666666666666666";
lab.fontSize = 50;
lab.clickHandle = () => {
lizheng.log(`点击了lab`);
}
// Laya.stage.addChild(lab)
box1.addChild(lab);
}