Re: [Boost-users] [signals] problem when disconnecting slots

From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2008-01-15 15:08:45

AMDG

Boris wrote:
> On Tue, 15 Jan 2008 19:30:00 +0200, raimar wagner  
> <raimar.wagner_at_[hidden]> wrote:
>
>   
>> Hello!
>> I'm trying to use the boost signals library to implement a callback
>> system, but my first test-application (see boost_test_app.cpp in
>> attachment) won't compile. The connect method works as expected, but
>> if I'm trying to disconnect my slot (in line 28: "
>> mySignal.disconnect(slot);") a compiler error message appears.
>>     
>
> This reminds me of bug #1076 - see  
> http://svn.boost.org/trac/boost/ticket/1076 (although that bug was  
> reported for Visual Studio).
>   

It's somewhat different though in that there is no way to make this work 
correctly.
Try making
Button::unregisterCallback a template

    template<class T>
    void unregisterCallback(const T& slot)
    {
        mySignal.disconnect(slot);
    }

In Christ,
Steven Watanabe