gtk_menu: update the menu

[Maarten <maarten mercuri el ub es>]

Hi GTK list,

I have a question about the gtk_menu wigdet.

Application:
My GTK 2.2 application build a menu from a sting, in the string every
item is separated by "\t".
So the string can look like: "item 1\titem 2\titem3\n".
This string can change when I am running the app, and that must be made
visual in the menu.

Problem:  
If the string changes (it contains other items) I can not see it in the
menu.

Question: 
What is the best way to make new string entrys visual in the menu?
I this possible anyway?, Or must I use an other widget (like gtk_list).
Or perhaps there I must use an Update-function in my code to update the
menu.

Solutions for my problem are more then welcome!  :-) 
Regards
Maarten.

This is how I am creating the menu from the string: 'strings':

GtkWidget * create_option_menu (gchar * strings)
{
    GtkWidget *menu;
    GtkWidget *option_menu;
    GtkWidget *menu_item;
    gchar *p;

    menu = gtk_menu_new ();
    p = strtok (strings, "\t");   
        while (p != NULL)   
            {
            menu_item = gtk_menu_item_new_with_label (p);
            gtk_widget_show (menu_item);
            gtk_menu_shell_append (GTK_MENU_SHELL (menu), menu_item);
            g_signal_connect_swapped (G_OBJECT (menu_item), "activate",
G_CALLBACK (menu_item_select), (gpointer) g_strdup (p));
            p = strtok (NULL, "\t");   
            }   
    option_menu = gtk_option_menu_new ();
    gtk_option_menu_set_menu (GTK_OPTION_MENU (option_menu), menu);
return option_menu;
}


I use strtok to separate the entrys from the string.