Re: [gtkmm] connecting to an checkbutton in a listview

[MHL Schulze t-online de (Martin Schulze)]

Am 2002.10.17 16:18 schrieb(en) Daniel Sundberg:
> On 17 Oct 2002 14:53:27 +0200
> Bart Hakvoort <bart hakvoort castel nl> wrote:
>
> > Hi,
> >
> > I'll try to connect a callback to a signal_toggled() emmited by an
> > checkbutton in a listview. But whatever i try, i still get the same
> > compile error. Hopefully this two lines of code illusrtates the problem,
> > if not, i'll can always add more.
> >
> > -----------------------------------------------------------
> > Gtk::CellRendererToggle* pRenderer = Gtk::manage( new
> > Gtk::CellRendererToggle() );
> > pRenderer->signal_toggled().connect( SigC::slot(*this,
> > &LijstDagdeel::listview_on_cell_toggled) );
> > -----------------------------------------------------
> >
>
> Did you declare listview_on_cell_toggled as:
>
> LijstDagdeel::listview_on_cell_toggled(Glib::ustring)
>
> ?

Otherwise you can write:

pRenderer->signal_toggled().connect( SigC::hide<const Glib::ustring&>(
   SigC::slot(*this, &LijstDagdeel::listview_on_cell_toggled) ) );

You can only directly connect a slot to a signal if the template
parameters of the two classes Glib::SignalProxyX and SigC::SlotX
as returned by SigC::slot() are identical.
This is not the case if the return type, the number of parameters or
the parameter types of the function you pass into SigC::slot() differ
from the template parameters of the Glib::SignalProxyX object you try
to connect to.
For more detailed information please have a look at the documentation
of libsigc++.

Regards,

  Martin Schulze


> Daniel Sundberg
> dss home se
>
>
> > the compile error is :
> >
> > no matching function for call to 'Glib::SignalProxy1<void. const
> > Glib::ustring &>::connect ( SigC::Slot0<void>)'
> >
> > any thoughs ?
> >
> > bart
> >
> > _______________________________________________
> > gtkmm-list mailing list
> > gtkmm-list gnome org
> > http://mail.gnome.org/mailman/listinfo/gtkmm-list
> >
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