cocos2dx 2.x版本如何在一个动作结束后调用另外的动作

[zmx278835598]

void floatIn(const float delay,std::function<void()> callback);

void FloatWord::floatIn(const float delay,std::function<void()> callback){
    Size visibleSize = Director::getInstance()->getVisibleSize();
    MoveTo* move = MoveTo::create(delay,Point(visibleSize.width/2,_begin.y));
    CallFunc* call = CallFunc::create(callback);
    Sequence* action = Sequence::create(move,call,NULL);
    _label->runAction(action);
}

上面是3.x中的实现。请问在2.x中要怎么通过action的回调函数来实现？或者是用别的方法