On Fri, Aug 3, 2012 at 10:06 AM, Igor R
Excuse my ignorance, but what does connecting one signal to another mean? Is it chaining the signals? Where is it documented?
Igor, You are correct, it is not documented. I assumed that it chains the signals. Using GDB, this is what happens (not that I understand any of it): 1. SignalA.connect(SignalB); 2. SignalB is passed as argument "f" to this function: template<typename F> BOOST_SIGNALS2_SLOT_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS)(const F& f) { init_slot_function(f); } 3. Then SignalB is passed to: template<typename F> void init_slot_function(const F& f) { _slot_function = detail::get_invocable_slot(f, detail::tag_type(f)); signals2::detail::tracked_objects_visitor visitor(this); boost::visit_each(visitor, f); } === It appears that SignalB is converted to a slot. I don't know what tracked_objects_visitor is, but perhaps it is the magic that keeps the test program from crashing. Chris