Re: [gtkmm] Gtk::entry set_position() problem and workaround

["Jeffrey S. Gavin" <jeff ezclick net>]

Paul Davis wrote:

> > We cannot figure out how to fassion a 'Glib::signal_idle().connect' 
> > statement where we can pass the entry widget, the set_position method 
> > and the position parameter so we don't have to use global variables and 
> > our helper 'sp' function.  I would love to improve our workaround.
> >    
>
>     #include <sigc++/bind.h>
>
>     class Object {
>         ...
> 	 gint method (Gtk::Widget*, sometype_t pos);
> 	 ...
>     }
>
>     using namespace SigC;
>
>   signal_idle().connect (bind (slot (*objectptr, &Object::method),
>                                w, pos));
>
>  
Awesome,

Your example didn't quite work because signal_idle().connect wants a 
function that returns a bool, but it triggered something in my brain 
that led me to the solution that I was looking for!!!  Thank you!  Here 
it is:

void set_position (Gtk::Entry * w, int n)
{
   Glib::signal_idle().connect
       (SigC::bind_return
           (SigC::bind<int>
               (SigC::slot (*w, &Gtk::Entry::set_position), n), false));
}

Wow!  A 'connect' with nested binds.  And it works just the way you 
would expect it to.

Thanks again,

Jeff