> I sent to this to the gtkmm list and the libsigc list, but no one has
> been able to help. This post isn't really C++-centric. It has more to with
> slots and callbacks.
> I created a ComboWCB class with
> a member function called Callback. This class is derived from the
> Combo class. I then write:
>
> ComboWCB *NewCombo = manage(new ComboWCB);
> ...
> NewCombo->get_popwin()->unmap_event.connect(
> slot(NewCombo, &ComboWCB::Callback) );
>
> The prototype for ComboWCB::Callback is as follows:
> void Callback(GdkEventAny *Event);
The prototype of your function and the signal do not match
thus the connection can not be completed. Change the
callback declaration.
> I get an error on the last line. The compiler complains that
> there is no matching function: no matching function for call to
You have a very crappy compiler for generating error messages...
here let me reduce the error make it more clear.
'Gtk::EmitProxySignal1<int,_GdkEventAny*>::connect (Slot1<void,_GdkEventAny*>
)'
/usr/local/include/gtk--/proxy.h:208: candidates are:
Gtk::ProxySignal1<int, _GdkEventAny*>::connect(const Slot1(int,_GdkEventAny
*> &)
Thus you are passing a Slot1<void,GdkEventAny*> and it wants a
Slot1<int, GdkEventAny*>. Thus you should change your callback
to return an int.
Hope it helps.
--Karl
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