http://kmlinux/~culik/wiki

<code c++>
    GtkWidget * box = 
       gtk_hbox_new (FALSE, 8);
    
    button = gtk_button_new_with_label ("Hello World");

    GtkWidget * button2 = 
      gtk_button_new_with_label ("Second Button");

    GtkWidget * button3 = 
      gtk_button_new_with_label ("Third Button");
    
    gtk_container_add (GTK_CONTAINER (window), box);

    gtk_container_add (GTK_CONTAINER (box), button);
    gtk_container_add (GTK_CONTAINER (box), button2);
    gtk_container_add (GTK_CONTAINER (box), button3);
</code>
<code c++>
    gtk_widget_show_all (window);
</code>