how to do time zone adjustment?

[news.ms.com]

Hi,

Any class in mfc that I can use to perform time zone adjustment? THanks.

Raymond.

 

[Pablo]

Hi,

Any class in mfc that I can use to perform time zone adjustment? THanks.

Depending on how much time zone adjustment you want, ie, truly
international, a few lines of code should suffice. There are some
complications when dealing with the U.S. where some states don't observe
DST, so timezone differences are 'different' during different times of year.
All of this is primarily and excuse to type the word 'different'. But that
was a joke.

If you're truly doing international time zoning, then you're gonna have to
figure out (you probably are already aware of this) all of those derned
middle eastern countries which sometimes have 30 minute and 45 minute zone
seperations.

Still, though, once you figure out your zones, you'd create a table or
matrix of geographic locations and a zone index #, and simply add or
subtract hours on the clock based on the zone index- with a clever
identifier for the pinko commie 30 minute, or non DST observing zones.

Paul

 

[Christian ASTOR]

Any class in mfc that I can use to perform time zone adjustment? THanks.

Time zones are stored in registry (HKLM/Software/.../Time Zones) (T.Z.
Editor)
Get/SetTimeZoneInformation() for the current one.

 

[kliff]

This is not MFC classes, but it can convert time to any format you want
(CTime - time_t, COleDateTime - DATE) and have a support for converting
to/from any timezone. Description see at
http://www.codeproject.com/datetime/dtz.asp

 

[K_Lee]

Time zones are stored in registry (HKLM/Software/.../Time Zones) (T.Z.
Editor)
Get/SetTimeZoneInformation() for the current one.

If you just like to do copy-paste some example,

http://www.slink-software.com/W/SL_...tion/FILE_win/tclWinTime.c/L_550/LN_513#L_510

Sorry, GetTimeZoneInformation only. But it tells you about arguments,
structures that's needed.