g_signal_connect, structs and my sanity

["beginner.c" <beginner c gmail com>]

I'm getting a segfault on the gtkscale callback (when accessing printf("Qs:
%i\n", base->sTestOne.a);). Can somebody please tell me what I'm doing
wrong. Also, what would be the cleanest way to prototype my struct (struct
allStructs) outside of main?

Thanks






#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <string.h>
#include <stdio.h>

#include <config.h>

#include <gtk/gtk.h>

#include "struct.h"
#include "cb.h"

/*
 * Standard gettext macros.
 */
#ifdef ENABLE_NLS
#  include <libintl.h>
#  undef _
#  define _(String) dgettext (PACKAGE, String)
#  ifdef gettext_noop
#    define N_(String) gettext_noop (String)
#  else
#    define N_(String) (String)
#  endif
#else
#  define textdomain(String) (String)
#  define gettext(String) (String)
#  define dgettext(Domain,Message) (Message)
#  define dcgettext(Domain,Message,Type) (Message)
#  define bindtextdomain(Domain,Directory) (Domain)
#  define _(String) (String)
#  define N_(String) (String)
#endif



#include "callbacks.h"

/* For testing propose use the local (not installed) glade file */
/* #define GLADE_FILE
PACKAGE_DATA_DIR"/struct_callback/glade/struct_callback.glade" */
#define GLADE_FILE "struct_callback.glade"
        

void funcScale (GtkWidget *widget, struct allStructs *base)

{
        gdouble value;
        value = gtk_range_get_value (GTK_RANGE (widget));
        printf("Qs: %i\n", value);
        printf("Qs: %i\n", base->sTestOne.a);
}

void button_callback (GtkButton *button, struct allStructs *base)

{
        //base->sTestOne.a = 99;
        printf("Qs: %i\n", base->sTestOne.a);
}

void button_callback2 (GtkButton *button, struct allStructs *base)

{
        printf("Qs: %i\n", base->sTestOne.a);
}

int
main (int argc, char *argv[])
{

        struct sOne
        {
                int a;
        };
        
        struct sTwo
        {
                int b;
        };

        struct widgets
        {
                GtkWidget *window;
                GtkWidget *button;
                GtkWidget *hscale;
                GladeXML *gxml;
        };
        
        struct allStructs
        {
                struct widgets sWidgets;
                struct sOne sTestOne;
                struct sTwo sTestTwo;
        };
        
        
        
        struct allStructs base;
        
        base.sTestOne.a = 967;
#ifdef ENABLE_NLS
        bindtextdomain (GETTEXT_PACKAGE, PACKAGE_LOCALE_DIR);
        bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
        textdomain (GETTEXT_PACKAGE);
#endif

        
        gtk_set_locale ();
        gtk_init (&argc, &argv);

        base.sWidgets.gxml = glade_xml_new (GLADE_FILE, NULL, NULL);
        glade_xml_signal_autoconnect (base.sWidgets.gxml);
        base.sWidgets.window = glade_xml_get_widget (base.sWidgets.gxml, "window");
        base.sWidgets.button = glade_xml_get_widget (base.sWidgets.gxml,
"button1");
        base.sWidgets.hscale = glade_xml_get_widget (base.sWidgets.gxml,
"hscale1");

        g_signal_connect (base.sWidgets.button, "clicked", G_CALLBACK
(button_callback), &base);
        g_signal_connect (base.sWidgets.button, "clicked", G_CALLBACK
(button_callback2), &base);
        g_signal_connect (base.sWidgets.hscale, "change-value", G_CALLBACK
(funcScale), &base);
        gtk_widget_show (base.sWidgets.window);

        gtk_main ();
        return 0;
}

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