gtk_widget_show() not showing window

["G. Paul Ziemba" <pz-gtk-app-devel-list treehouse napa ca us>]

Greetings,

gtk_widget_show() does not seem to be operating the way I expect;
could one of the experts please tell me if something is wrong with
this code or if something is wrong with gtk?

When I run this small bit of code, the window appears briefly
and then disappears immediately. The program does not exit.
I expect the window to stay visible (due to gtk_widget_show()),
but it's not happening.

many thanks!

Versions:
    OS: FreeBSD 6.2-STABLE #0: Sun Jun  3 19:55:09 PDT 2007
    gtk: gtk-2.10.12, gtk-2.10.14


Test program compiled with:
    gcc -o test test.c `pkg-config --cflags --libs gtk+-2.0`

Test Program:
    #include <gtk/gtk.h>

    static void
    button_clicked_cb(GtkButton *button, gpointer data)
    {
        GtkWidget *window2;
        window2 = gtk_window_new(GTK_WINDOW_TOPLEVEL);
        gtk_widget_show_all(window2);
        gtk_widget_hide(window2);
        gtk_widget_show(window2);
    }

    int
    main(int argc, char **argv)
    {
        GtkWidget *window;
        GtkWidget *button;

        gtk_init(&argc, &argv);

        window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
        g_signal_connect(G_OBJECT(window), "delete_event",
                         G_CALLBACK(gtk_main_quit), NULL);

        button = gtk_button_new_with_label("Click me");
        g_signal_connect(G_OBJECT(button), "clicked",
                         G_CALLBACK(button_clicked_cb), NULL);
        gtk_container_add(GTK_CONTAINER(window), button);

        gtk_widget_show_all(window);
        gtk_widget_hide(window);
        gtk_widget_show(window);

        gtk_main();

        return 0;
    }
-- 
G. Paul Ziemba
FreeBSD unix:
11:56AM  up 23 days,  1:16, 12 users, load averages: 0.18, 0.35, 0.32