没有关于升压信号的名为"应用"的类模板2

我已经按照 Boost 教程"传递插槽（中级）"，在参考 [ 1 ] 到这封信，但我的代码遇到了一个奇怪的错误，我无法破译或找到任何帮助。我的代码如下：

[ 1 ] - http://www.boost.org/doc/libs/1_55_0/doc/html/signals2/tutorial.html#idp204830936

namespace GekkoFyre {
class TuiHangouts {
private:
    typedef boost::signals2::signal<void()> onRosterUpdate;
    typedef onRosterUpdate::slot_type onRosterUpdateSlotType;
    void logMsgs(std::string message, const xmppMsgType &msgType);
    void logMsgsDrawHistory();
    // Slots
    boost::signals2::connection doOnRosterUpdate(const onRosterUpdateSlotType &slot);
    onRosterUpdate rosterUpdate;
};
}
boost::signals2::connection GekkoFyre::TuiHangouts::doOnRosterUpdate(
        const GekkoFyre::TuiHangouts::onRosterUpdateSlotType &slot)
{
    return rosterUpdate.connect(slot);
}

问题出在这一点上：

void GekkoFyre::TuiHangouts::logMsgs(std::string message, const xmppMsgType &msgType)
{
    doOnRosterUpdate(&GekkoFyre::TuiHangouts::logMsgsDrawHistory);
}

我收到错误：

In file included from /usr/include/boost/function/detail/maybe_include.hpp:13:0,
                 from /usr/include/boost/function/detail/function_iterate.hpp:14,
                 from /usr/include/boost/preprocessor/iteration/detail/iter/forward1.hpp:47,
                 from /usr/include/boost/function.hpp:64,
                 from /usr/include/boost/signals2/signal.hpp:18,
                 from /usr/include/boost/signals2.hpp:19,
                 from /home/phobos/Programming/gecho/src/tui/chat.hpp:47,
                 from /home/phobos/Programming/gecho/src/tui/chat.cpp:35:
/usr/include/boost/function/function_template.hpp: In instantiation of 'void boost::function0<R>::assign_to(Functor) [with Functor = void (GekkoFyre::TuiHangouts::*)(); R = void]':
/usr/include/boost/function/function_template.hpp:722:7:   required from 'boost::function0<R>::function0(Functor, typename boost::enable_if_c<(boost::type_traits::ice_not<(boost::is_integral<Functor>::value)>::value), int>::type) [with Functor = void (GekkoFyre::TuiHangouts::*)(); R = void; typename boost::enable_if_c<(boost::type_traits::ice_not<(boost::is_integral<Functor>::value)>::value), int>::type = int]'
/usr/include/boost/function/function_template.hpp:1071:16:   required from 'boost::function<R()>::function(Functor, typename boost::enable_if_c<(boost::type_traits::ice_not<(boost::is_integral<Functor>::value)>::value), int>::type) [with Functor = void (GekkoFyre::TuiHangouts::*)(); R = void; typename boost::enable_if_c<(boost::type_traits::ice_not<(boost::is_integral<Functor>::value)>::value), int>::type = int]'
/usr/include/boost/function/function_template.hpp:1126:5:   required from 'typename boost::enable_if_c<(boost::type_traits::ice_not<(boost::is_integral<Functor>::value)>::value), boost::function<R()>&>::type boost::function<R()>::operator=(Functor) [with Functor = void (GekkoFyre::TuiHangouts::*)(); R = void; typename boost::enable_if_c<(boost::type_traits::ice_not<(boost::is_integral<Functor>::value)>::value), boost::function<R()>&>::type = boost::function<void()>&]'
/usr/include/boost/signals2/detail/slot_template.hpp:160:24:   required from 'void boost::signals2::slot<R(Args ...), SlotFunction>::init_slot_function(const F&) [with F = void (GekkoFyre::TuiHangouts::*)(); SlotFunction = boost::function<void()>; R = void; Args = {}]'
/usr/include/boost/signals2/detail/slot_template.hpp:85:27:   required from 'boost::signals2::slot<R(Args ...), SlotFunction>::slot(const F&) [with F = void (GekkoFyre::TuiHangouts::*)(); SlotFunction = boost::function<void()>; R = void; Args = {}]'
/home/phobos/Programming/gecho/src/tui/chat.cpp:802:74:   required from here
/usr/include/boost/function/function_template.hpp:924:9: error: no class template named 'apply' in 'struct boost::detail::function::get_invoker0<boost::detail::function::member_ptr_tag>'
         handler_type;

如果有人能协助解决这个问题，那么将不胜感激。正如我之前所说，我做了一些研究，但实际上找不到太多东西。也许这对我来说似乎有点独特，而且我确实遵循了这封信的教程。我知道这并不总是正确的做法，但从我通过研究收集到的信息来看，这段代码应该有效。