Sorry, This seems to have been because I was using 1.33.1, which I should have mentioned. I've got 1.34.1 and that seems to work fine. Grant Patterson wrote:

Hi Folks,

I'm just getting started with Boost signals (actually moving from sigc++ signals) and I'm having trouble with something that seems rather simple:

#include <boost/bind.hpp> #include <boost/signals/slot.hpp>

#include "dlg.hh" // includes <boost/signal.hpp>

Dlg::Dlg() { boost::signal<void()> login; login.connect(boost::bind(&Dlg::Foo, this)); }

void Dlg::Foo() { // stuff }

In fact, I've found an example in LyX's source http://tinyurl.com/68secc that seems to do exactly what I'm doing. I get:

.../boost-1.33.1/include/boost-1_33_1/boost/bind.hpp: In function 'void boost::visit_each(V&, const boost::_bi::value<T>&, int) [with V = boost::signals::detail::bound_objects_visitor, T = Dlg*]': .../boost-1.33.1/include/boost-1_33_1/boost/bind.hpp:239: instantiated from 'void boost::_bi::list1<A1>::accept(V&) const [with V = boost::signals::detail::bound_objects_visitor, A1 = boost::_bi::value<Dlg*>]' .../boost-1.33.1/include/boost-1_33_1/boost/bind/bind_template.hpp:150: instantiated from 'void boost::_bi::bind_t<R, F, L>::accept(V&) const [with V = boost::signals::detail::bound_objects_visitor, R = void, F = boost::_mfi::mf0<void, Dlg>, L = boost::_bi::list1<boost::_bi::value<Dlg*> >]' .../boost-1.33.1/include/boost-1_33_1/boost/bind.hpp:1213: instantiated from 'void boost::visit_each(V&, const boost::_bi::bind_t<R, F, L>&, int) [with V = boost::signals::detail::bound_objects_visitor, R = void, F = boost::_mfi::mf0<void, Dlg>, L = boost::_bi::list1<boost::_bi::value<Dlg*> >]' .../boost-1.33.1/include/boost-1_33_1/boost/visit_each.hpp:25: instantiated from 'void boost::visit_each(Visitor&, const T&) [with Visitor = boost::signals::detail::bound_objects_visitor, T = boost::_bi::bind_t<void, boost::_mfi::mf0<void, Dlg>, boost::_bi::list1<boost::_bi::value<Dlg*> > >]' .../boost-1.33.1/include/boost-1_33_1/boost/signals/slot.hpp:121: instantiated from 'boost::slot<SlotFunction>::slot(const F&) [with F = boost::_bi::bind_t<void, boost::_mfi::mf0<void, Dlg>, boost::_bi::list1<boost::_bi::value<Dlg*> > >, SlotFunction = boost::function<void ()(), std::allocator<void> >]' .../source_tree/dlg.cc:92: instantiated from here .../boost-1.33.1/include/boost-1_33_1/boost/bind.hpp:1208: error: no matching function for call to 'visit_each(boost::signals::detail::bound_objects_visitor&, Dlg* const&, int)'

Any idea what might be causing this? Thanks!

grant