[belugin]

А по перекрестным посмотреть
например, WInApi::showMruAllowed

static client boolean showMruAllowed()
{
    #winAPI
    container reg   = conNull();
    int       value;
    int       handle;

    handle  = WinAPI::regOpenKey(#HKEY_CURRENT_USER, 'Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Comdlg32', #KEY_READ);
    reg     = WinAPI::regGetValue(handle, 'NoFileMru');
    WinAPI::regCloseKey(handle);

    if (reg == conNull())
    {
        // The item is not found, so Most Recently Used menus are allowed
        return true;
    }
    else
    {
        // If the value is true, MRUs are not allowed
        [ value ] = reg;
        return  (value != true);
    }
}