gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
/* Attach the callback functions to the activate signal. */
g_signal_connect(item, "activate", G_CALLBACK(help_about_event), NULL);
gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
/* Attach the callback functions to the activate signal. */
g_signal_connect(item, "activate", G_CALLBACK(help_about_event), NULL);