cocos2d-x lua 彈出框

cocos2d-x，點擊出現彈出窗口，如何將下面層的點擊事件禁掉？需要設置 listener:setSwallowTouches(true)，這樣就不會觸發下一層的事件，還有在onTouchBegan中返回true

如

	local layerColor=Layer2.new()
	
	 local function onTouchBegan(touch, event)
	 return true
	 end
	
	
    local listener=cc.EventListenerTouchOneByOne:create()
    listener:setSwallowTouches(true)
    listener:registerScriptHandler(onTouchBegan,cc.Handler.EVENT_TOUCH_BEGAN)
    local eventDispatcher = layerColor:getEventDispatcher()
    eventDispatcher:addEventListenerWithSceneGraphPriority(listener,layerColor)