Re: Closing a window

[Iago Rubio <iago rubio hispalinux es>]

On Thu, 2004-03-18 at 13:50, Toth Zoltan wrote:
> On Thu, 2004-03-18 at 11:46, Ruben Rubio wrote: 
[snip]
> > The think is, im creating a GTK app using Glade, and I want when a
> > person click on next it will create a new window and will close the
> > first one.
> >
> > I have tried a lot. Im able to open the new window but I dont know how
> > to close the first one. This is my last code:
> >
> > on_cmdNext_clicked (GtkButton *button,
> >                                         gpointer         user_data)
> > {
> >                                                                                                           
> >                    
> >   GtkWidget *nextstep;

>        GtkWidget     *oldwindow; 

> >   nextstep = create_srcStepTwo();
> >   gtk_widget_show(nextstep);

>       oldwindow=lookup_widget( button , "window1");
>         // in interface.c : GLADE_HOOKUP_OBJECT_NO_REF (window1,
> window1, "window1");
>       gtk_widget_destroy( oldwindow ); 

> >   //gtk_widget_destroy (button); //Here fails How can i get the pointer to
> >                            // the first window??
> > }


The lookup_widget() stuff is ok if you're using Glade2, but not the Gtk
way of doing this things ;)

As example, this function is not defined in a Glade generated project
but in a Glade-2 generated one.

To get the window pointer using only Gtk functions, you can pass it as
user_data when you connect the clicked signal:

g_signal_connect(button, "clicked", on_cmdNext_clicked,
pointer_to_window);

Then the pointer is passed to your callback, and you can use it as
needed:

void
on_cmdNext_clicked (GtkButton *button, gpointer  user_data)
{
        GtkWidget *nextstep;
        GtkWidget* window;
        window = GTK_WIDGET(user_data);
        nextstep = create_srcStepTwo();
        gtk_widget_show( nextstep );
        gtk_widget_destroy( window );
}

I'm not telling you to don't use lookup_widget(). It's really usefull.

It's just to tell you that lookup_widget() is not a Gtk function but a
Glade defined function.

You can take a look at this function in the support.c file generated by
Glade. 


Hope this helps.
-- 
Iago Rubio                http://www.iagorubio.com          
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