Beep on pc speaker

[Alexander M.]

Windows 98
Visual C++ 6.0

Hi!

I tried do give a Beep on the pc speaker. I used MessageBeep(0xFFFFFFFF) and Beep(...). Both functions work fine under Windows 95 and Windows NT. Under Windows 98 they only produce a klick sound.

Any ideas?

Alexander

[dolittle]

Hi,

This is because MessageBeep(0xFFFFFFFF), doesn't create the sound but actually tells Windows to make a 'default sound', which in turn windows uses a WAV file which was set for the "Default Sound" setting (under Control Panel->Sounds->Default Sound).

This is why in Win98 it sounds like a click, the Win98 was told to sound a different WAV for the "Default Sound".

[Alexander M.]

MSDN:
Beep:
Windows 95: The Beep function ignores the dwFreq and dwDuration parameters. On computers with a sound card, the function plays the default sound event. On computers without a sound card, the function plays the standard system beep.

(the sound card was disabled)

MessageBeep:
Parameters uType
Specifies the sound type, as identified by an entry in the [sounds] section of the registry. This parameter can be one of the following values: Value Sound
0xFFFFFFFF Standard beep using the computer speaker
MB_ICONASTERISK SystemAsterisk
MB_ICONEXCLAMATION SystemExclamation
MB_ICONHAND SystemHand
MB_ICONQUESTION SystemQuestion
MB_OK SystemDefault


The sound always came over the pc speaker and not over the sound card.
But its a nearly not to hear click sound in Windows 98 and a normal beep in Windows 95 & NT.

[dolittle]

Hi,

I don't know, could be that there is a new PC Speaker driver at work under win98, this could cause this strange behaviour.