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GetTickCount equivalent for NT/2k?

Olympus asked
Last Modified: 2010-04-06
How do I get the 8byte value indicating the amount of milliseconds since startup in NT/2k? GetTickCount only works properly under 9x/me.

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?? GetTickCount works fine in NT/2000, too!

Regards, Madshi.

GetTickCount works fine form me in Win 2k.

Did you upgrade to Delphi4/5 at the same time? With the introduction of unsigned 4-byte numbers (longword) Borland broke a lot of programs.

In Delphi 3 you would use longint, to store the result of GetTickCount, but in Delphi 4/5 you must use longword. The best is to uses DWORD, that works fine under all 32-bit versions of Delphi.


GetTickCount is less accurate in NT/2k then, because I have a client->server based socket program, and when i send GetTickCount to server and it returns it and I subtract it from GetTickCount again, it always becomes 0 ms.  (When doing the same thing in me, i get 3-6 ms, and no, there is nothing wrong with my socket code)
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Note: The "Sleep(5)" is only to demonstrate the usege...
(It is not part of the usage)

KobiK is right - if the resolution of the timer is a problem then you should use QueryPerformanceCounter().


"Windows NT:  To obtain the time elapsed since the computer was started, look up the System Up Time counter
in the performance  data in the registry key  HKEY_PERFORMANCE_DATA . The value returned is an 8 byte

how do i query the system up time counter?


I guess that this key in WinNT refers to what QueryPerformanceCounter returns.
Every high-resoltion counter i saw used the QueryPerformanceCounter, also with JCL (delphi-jedi) - JclCounter.pas and other "well-known" packages...

Why "fight" the system? :)

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