如何获取cocostudio2导出的csb文件的控件的子控件?

刚学习cocos不久,还是小白

auto  p = static_cast(node->getChildByTag(397));
auto t1 = static_cast(p->getChildByTag(908));
auto t1 = static_cast(node->getChildByTag(908));
auto t2 = static_cast(node->getChildByName("BtnShop_10"));
auto t3 = static_cast(node->getChildByName("ProjectNode_2")->getChildByName("BtnShop_10"));
```

尝试了一些方法,但返回的值都是NULL,求教,不胜感激!!!