Hi everybody, I'd like to have a generic wrapper that can be put "in between" a signal and a slot to provide some additional functionality to the slot. So where I normally have something like void myslot(int i) { std::cout << "slot(" << i << ")\n"; } int main(int argc, char *argv[]) { boost::signal sig; sig.connect(boost::bind(myslot, _1)); sig(123); return 0; } I want something like int main(int argc, char *argv[]) { boost::signal sig; SlotWrapper slotWrap(boost::bind(myslot, _1)); sig.connect(boost::bind(SlotWrapper::slot, &slotWrap, _1)); sig(123); return 0; } The signature of SlotWrapper<Signature>'s member function slot() is defined by Signature. slot()'s implementation should have some common functionality (that's what I want the wrapper for) and then call the actual slot that was given at construction (myslot() in the example above). Is that doable? So far I have two questions: 1) How can I define a member function according to the signature that is given as a template parameter to the class? 2) If I can do 1), how can I then bind the arguments given and call another function, i.e. the original slot? A skeleton of the wrapper might look like: template <typename Signature> class SlotWrapper { public: SlotWrapper(const typename boost::signal<Signature>::slot_function_type& slot) : m_slot(slot) {} // define a function according to Signature typename boost::signal<Signature>::result_type slot(...arguments...) { // do something common // call somehow the actual slot (m_slot) with the given ...arguments... } private: const typename boost::function<Signature> m_slot; }; How can I write the slot() function? Thanks for any help, Stefan