Gtk-Warning: Could not find signal handler

[evilbios]

Hello,
I'm hopefull to get an answer to this problem I've been having for the past few days. I'm trying to load a simple gui I made in Glade. The form loads property but in terminal I get the error:

GtK-WARNING: Could not find signal handler 'on_window1_destroy'

Its the signal I have setup on the main window.

This is my code:

#include <gtk/gtk.h>
#include "sqldbconnection.h"
#include <stdio.h>

G_MODULE_EXPORT void on_window1_destroy (GtkObject *object, gpointer user_data)
{
gtk_main_quit();
}

int main (int argc, char *argv[])
{
GtkBuilder *builder;
GtkWidget *window;
GError *error = 0;

gtk_init(&argc, &argv);

builder = gtk_builder_new();
if (!gtk_builder_add_from_file(builder, "Frost.glade", &error))
{
g_warning("%s", error->message);
g_free(error);
return(1);
}
window = GTK_WIDGET(gtk_builder_get_object(builder, "window1"));
gtk_builder_connect_signals(builder, NULL);
g_object_unref(G_OBJECT(builder));

gtk_widget_show(window);
gtk_main();

return 0;
}

and the compile line I'm using is:
`--export-dynamic` `pkg-config --cflags --libs gtk+-2.0 gmodule-export-2.0`

I'm using Code::Blocks IDE.
Any help is appreciated, Ive been searching forums for days with no answers. Thank you.