Class send through a CallBack function

edit

I can't figure out how to correctly use boost::bind while sending a class function as a callback Function. I want to callBack function to have on class I made as an argument as well.

Do far my code is like this :

    Scribe(ros::NodeHandle ao_nh, std::string topic, Platform& p) : _verbose(false), _topic_name(topic), _timeStamp(ros::Time::now()), _cmd(), _needChecking(false) {
    //Scribe mode
    _scribe=ao_nh.subscribe<geometry_msgs::Twist>( topic,1000, boost::bind(&Scribe::callBackFunc, _1, &p), this);
    //Timer
    _bomb=ao_nh.createTimer(ros::Duration(2),&Scribe::bombCallBack, this);
};

and the call back function is like this :

void callBackFunc(const geometry_msgs::Twist::ConstPtr& msg, Platform* plat);

Or, I have a error such that no matching function to call and I can't figure out how to correctly declare the subscriber.

Any help is appreciated.