libglade question for page 1

[y g <odysseus lost gmail com>]

hi,

i have a simple window with a button which when clicked prints to
stdout a message. using libglade to interpret the xml file. compiles
fine but when i running it i get a warning that signal handler for the
button cannot be found. sorry for this trivial question but i think i
followed exactly the documentation and cannot find the answer to that.
find below the xml and c sources.

<?xml version="1.0" standalone="no"?> <!--*- mode: xml -*-->
<!DOCTYPE glade-interface SYSTEM "http://glade.gnome.org/glade-2.0.dtd";>

<glade-interface>

<widget class="GtkWindow" id="windowWorld">
  <property name="visible">True</property>
  <property name="title" translatable="yes">window1</property>
  <property name="type">GTK_WINDOW_TOPLEVEL</property>
  <property name="window_position">GTK_WIN_POS_NONE</property>
  <property name="modal">False</property>
  <property name="resizable">True</property>
  <property name="destroy_with_parent">False</property>
  <property name="decorated">True</property>
  <property name="skip_taskbar_hint">False</property>
  <property name="skip_pager_hint">False</property>
  <property name="type_hint">GDK_WINDOW_TYPE_HINT_NORMAL</property>
  <property name="gravity">GDK_GRAVITY_NORTH_WEST</property>
  <property name="focus_on_map">True</property>

  <child>
    <widget class="GtkButton" id="buttonSurprise">
      <property name="visible">True</property>
      <property name="can_focus">True</property>
      <property name="label" translatable="yes">Click me for a
surprise</property>
      <property name="use_underline">True</property>
      <property name="relief">GTK_RELIEF_NORMAL</property>
      <property name="focus_on_click">True</property>
      <signal name="clicked" handler="on_buttonSurprise_clicked"
last_modification_time="Fri, 03 Jun 2005 14:05:08 GMT"/>
    </widget>
  </child>
</widget>

</glade-interface>




#include <gtk/gtk.h>
#include <glade/glade.h>

void
on_buttonSurprise_clicked(GtkWidget *widget, gpointer user_data)
{
  g_print("Mysterious world\n");
}

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

    gtk_init(&argc, &argv);

    /* load the interface */
    xml = glade_xml_new("test3.glade", NULL, NULL);

    /* connect the signals in the interface */
    glade_xml_signal_autoconnect(xml);

    /* start the event loop */
    gtk_main();

    return 0;
}