static void cmdhelp_showline(int index, const MenuEntry *me)
{
    static_cast<formatted_string *>(me->data)->display();
}

    Menu cmd_help;

    formatted_scroller cmd_help;

    cmd_help.set_flags(
            MF_NOSELECT | MF_ALWAYS_SHOW_MORE | MF_NOWRAP,
            false);

    cmd_help.set_flags(MF_NOSELECT | MF_ALWAYS_SHOW_MORE | MF_NOWRAP, false);

    cmd_help.f_drawitem  = cmdhelp_showline;

    std::vector<MenuEntry*> entries;
    for (unsigned i = 0, size = lines.size(); i < size; ++i)
    {
        MenuEntry *me = new MenuEntry;
        me->data = new formatted_string(lines[i]);
        entries.push_back(me);
        cmd_help.add_entry(me);
    }

    for (unsigned i = 0; i < lines.size(); ++i )
        cmd_help.add_item_formatted_string(lines[i]);

    for (unsigned i = 0, size = entries.size(); i < size; ++i)
        delete static_cast<formatted_string*>( entries[i]->data );