}

/*
 * Beep.
 */
void beep(int mode) {
    if (mode == BELL_DEFAULT) {
	/*
	 * For MessageBeep style bells, we want to be careful of
	 * timing, because they don't have the nice property of
	 * PlaySound bells that each one cancels the previous
	 * active one. So we limit the rate to one per 50ms or so.
	 */
	static long lastbeep = 0;
	long now, beepdiff;

	now = GetTickCount();
	beepdiff = now - lastbeep;
	if (beepdiff >= 0 && beepdiff < 50)
	    return;
	MessageBeep(MB_OK);
	lastbeep = now;
    } else if (mode == BELL_WAVEFILE) {
	if (!PlaySound(cfg.bell_wavefile, NULL, SND_ASYNC | SND_FILENAME)) {
	    char buf[sizeof(cfg.bell_wavefile)+80];
	    sprintf(buf, "Unable to play sound file\n%s\n"
		    "Using default sound instead", cfg.bell_wavefile);
	    MessageBox(hwnd, buf, "PuTTY Sound Error", MB_OK | MB_ICONEXCLAMATION);
	    cfg.beep = BELL_DEFAULT;