Author: Christophe Theron
Date: 13:43:37 10/08/99
Go up one level in this thread
On October 08, 1999 at 06:14:23, Vincent Lejeune wrote:
>On October 08, 1999 at 04:16:57, Christophe Theron wrote:
>
>>On October 08, 1999 at 03:42:54, Dave Gomboc wrote:
>>
>>>On October 07, 1999 at 23:29:05, Christophe Theron wrote:
>>>
>>>>That's a real problem on PC.
>>>>
>>>>The timer clicks 65536 times in 1 hour, which makes something close to 18.2
>>>>times per second, or a 0.05s timer resolution.
>>>>
>>>>This numbers come from the prehistoric IBM PC 4.77MHz and have never been
>>>>changed in 20 years, for compatibility reasons.
>>>>
>>>>Even Windows programmers did not dare to change this. You have time functions in
>>>>Windows, they returns values in milliseconds, but still the resolution is about
>>>>0.05s!!!
>>>
>>>Use performance tick counts if you develop for Win32. (Actually, I am not 100%
>>>sure that Win98 supports them. :-( WinNT does for sure.) Their resolution is
>>>very good.
>>>
>>>Dave
>>
>>Not sure this works. In the experiences I have done, the timer resolution was
>>always 0.05s. I'm pressimistic about getting something more accurate under
>>Windows 9x.
>>
>>This is not a big problem anyway...
>>
>>
>> Christophe
>
>I've tested the gettickcount() Win32 api, it's documented as have a 1
>millisecond time resolution and it have it effectivly.
>
>The win32 functions are usable in all Windows programming language (C++ (Borland
>and Microsoft), Delphi, ...)
Good to know. Thanks.
Christophe
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