在laya中 已经阻止了滚轮事件，但stage还是能监听到，

let list:fairygui.GList = this.type2Con.getChild("n12").asList;
list.on(Laya.Event.MOUSE_WHEEL, this, this.OnClickLook);
this.type2Con.on(Laya.Event.MOUSE_WHEEL, this, this.OnClickLook);
this.gui.on(Laya.Event.MOUSE_WHEEL, this, this.OnClickLook);

private OnClickLook(e:Event)
{
e.stopPropagation();
console.log(e.target);
}