(Excuse the crude example) I'm trying to create a simple publisher/subscribe service app, using signals, the issue I'm trying to resolve is how to register the callbacks correctly to each signal. Callbacks will have different parameter types. When attempting to typecast the subscriber, it does not register correctly due to different parameters? Is there a better way? Boost::signal< void (void)> simple_t; boost::signal<int (int,int,int)> signal_a; boost::signal<void (void)> signal_b; typedef void (*callbackFunc) (void); typedef callbackFunc func_t; int Callback1(int, int,int) { ..... return 0;} void callback2( void ) { }; setup() { publish("signal/a", signal_a); publish("signal/b", signal_b); } App() { Subscribe("signal/a", &callback1); Subscribe("signal/b", &callback2); } API: void publish(stl::string uri, simple_t &) { // add uri // add generic boost::signal?? } void subscribe(stl::string uri, func_t func) { //Find entry simple_t t= find(uri); t.Connect(func); //This does }