void timer_driver_private_handler(int signal_seen)
#elif defined(__WIN32__)
void __stdcall timer_driver_private_handler(window_handle hwnd, basis::un_int msg,
void timer_driver_private_handler(int signal_seen)
#elif defined(__WIN32__)
void __stdcall timer_driver_private_handler(window_handle hwnd, basis::un_int msg,