Cocos2d-x 3.1.1 之 MessageBox、LabelTTF、菜单、

    if ( !Layer::init()  )    {        return false;    }    Size size = Director::getInstance()->getVisibleSize();//MessageBox("消息内容", "消息标题");LabelTTF * ttf = LabelTTF::create();ttf->setString("LabelTTF");ttf->setColor(Color3B::BLUE);ttf->setPosition(CCPoint(size.width/2, size.height/2));addChild(ttf);//1菜单MenuImage(3个参数，1，2为图片，3为回调函数，此处用了闭包函数)//2Menu Create的时候把 Image添加进来，可以添加多个MenuImage，在最后添加NULL作结束auto menu = Menu::create(MenuItemImage::create("normal.png","selected.png", [this,tf](Object* ob){ //截取参数this->removeChild(tf);}),NULL);addChild(menu);    return true;