From: "Albrecht Fritzsche" <albrecht.fritzsche@tiscali-dsl.de>
And that object pointer passing was missing in my code and was achieved in your code through the binding? I had already looked at boost::bind but still cannot figure out its interface
template<class F, class A1> unspecified-3-1 bind(F f, A1 a1);
What is this returning?
Following the boost::bind reference is not an easy task. :-) First, you need template<class R, class T, class A1> unspecified-5 bind(R (T::*f) (), A1 a1) Effects: equivalent to bind<R>(boost::mem_fn(f), a1); since the first argument is a member function. This redirects you to template<class R, class F, class A1> unspecified-3 bind(F f, A1 a1) Returns: a function object λ such that the expression λ(v1, v2, ..., vm) is equivalent to f(µ(a1, v1, v2, ..., vm)), implicitly converted to R. Throws: Nothing unless the copy constructors of F or A1 throw an exception. and all this translated to English means that boost::bind(&Manager::Check, this) returns a function object that, when called, returns boost::mem_fn(&Manager::Check)(this) that, in turn (see the mem_fn documentation) is equivalent to (this->*&Manager::Check)(); The thing to remember is that member functions have an additional implicit argument, the object pointer/reference.