Re: [Boost-users] [Signals2] Signal disconnect wrapper won't work

7 Jul 2009


      AMDG

Marc dela Cruz wrote:
...
Hopefully this is not another simple oversight on my part but I have code like below and the disconnect wrapper does not work.
Thanks.
typedef boost::signals2::signal VoidSignal;
typedef VoidSignal::slot_type VoidSlot;
class x{
public:
void somefuncA()
{
    cerr << "Bada bing" << endl;
}
void somefuncB()
{
    cerr << "Bada boom " << endl;
}
};
void disconnect(VoidSlot const& rF, VoidSignal& rSig)
{
    rSig.disconnect(rF); //won't compile
    //rSig.disconnect(&rF); //compiles but doesn't disconnect
}
int main()
{
    x myX;
    VoidSignal sig;
    sig.connect(VoidSlot(&x::somefuncB, &myX));
    disconnect(VoidSlot(&x::somefuncB, &myX, sig); //doesn't work/compile as expected
    disconnect(boost::bind(&x::somefuncB, &myX, sig); //doesn't work/compile either
    sig(); // will still invoke somefuncB
    return 0;
}
Ignoring all the minor syntax errors, my guess is that
the basic problem is
http://www.boost.org/doc/html/function/faq.html#id1877737

In Christ,
Steven Watanabe