Re: [gtkmm] static Glib::RefPtr<>'s

[Jay Camp <jayc CLEMSON EDU>]

Oops!  Thanks.  I'm still getting the linking error though after fixing
that.  Forgot to insert that last time:

/usr/include/glibmm-2.4/glibmm/refptr.h:155: undefined reference to
`Glade::get() in MainWindow.o(.text+0x5c): In function
`MainWindow::connect_menu()':

I have my Glade.h included in the file I want to use it, and am
accessing it like this:

Glade::get()->get_widget("menu_file_quit", menuItem);

(menuItem is already declared and defined)

Thanks!

On Tue, 2004-06-01 at 20:46, Bowie Owens wrote:
> Jay Camp wrote:
> 
> >I'm trying to create a singleton class to use for a variable that's a
> >RefPtr<>.  It compiles, but fails to link when used.  Are there any
> >problems with using a static RefPtr<> in this way?  The code isn't very
> >long, so I have pasted it below.  Any tips would be much appreciated:
> >  
> >
> Is this all your code? Your program won't link because you have declared 
> but not defined Glade::instance. You need a line in your .cc file:
> 
> Glib::RefPtr<Gnome::Glade::Xml> Glade::instance;
> 
> 
> >FILE:  Glade.h
> >
> >#ifndef GLADE_H
> >#define GLADE_H
> >
> >#include <glibmm.h>
> >#include <libglademm.h>
> >
> >class Glade {
> >
> >	public:
> >		static Glib::RefPtr<Gnome::Glade::Xml> get();
> >
> >	protected:
> >		Glade();
> >		Glade(const Glib::RefPtr<Gnome::Glade::Xml>&);
> >		Glade& operator= (const
> > 				 Glib::RefPtr<Gnome::Glade::Xml>&);
> >
> >	private:
> >		static Glib::RefPtr<Gnome::Glade::Xml> instance;
> >};
> >
> >#endif
> >
> >FILE:  Glade.cc
> >
> >#include "Glade.h"
> >
> >Glib::RefPtr<Gnome::Glade::Xml> Glade::get() {
> >	
> >	if (instance)
> >		instance = Gnome::Glade::Xml::create("glade/k5.glade");
> >
> >	return instance;
> >}
> >
> >Glade::Glade() { }
> >
> >
> >  
> >
>