GTK+ help needed: How do I add a GtkEntry so that it fills a GtkToolbar?

[silviubogan]

This is a just simplified case because my C file is too big to post it here:

int main(int argc, char **argv) {
  GtkWidget *window, *vbox, *toolbar, *locationentry;
  GtkToolItem *locationbar;

  gtk_init(&argc, &argv);

  window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
  vbox = gtk_vbox_new(FALSE, 0);
  toolbar = gtk_toolbar_new();
  locationentry = gtk_entry_new();
  locationbar = gtk_tool_item_new();

  gtk_container_add(GTK_CONTAINER(locationbar), locationentry);
  gtk_toolbar_insert(GTK_TOOLBAR(toolbar), locationbar, -1);
  gtk_box_pack_start(GTK_BOX(vbox), toolbar, FALSE, FALSE, 0);
  gtk_container_add(GTK_CONTAINER(window), vbox);

  gtk_widget_show_all(window);

  gtk_main();

  return 0;
}

How do I add locationentry to the toolbar so that it fills the toolbar? GtkToolItem does not subclass GtkBox so I can't use gtk_box_pack_start function which has the fill argument I need here.

I attached the big C file.

I forgot to say that I'm using Webkit GTK+ port (libwebkit-dev package on Ubuntu 9.10). The simplified case does not use this lib, but the main.c file I attached uses it.

PS: Sorry for my bad English..