[Lazarus] Possible error with Now function over summer/winter time change?
pascaldragon at googlemail.com
Thu Nov 7 16:10:19 CET 2013
Am 28.10.2013 10:50, schrieb Sven Barth:
> Am 28.10.2013 08:49, schrieb David Taylor:
>> On 27/10/2013 16:40, Michael Van Canneyt wrote:
>>> It is a known problem.
>>> Doing this 100% correctly involves re-reading the timezone file at
>>> call of Now() or Date().
>>> Clearly, this is a huge performance impact, severely skewing the time
>>> So this is not done.
>>> The "unix" unit contains
>>> Procedure ReReadLocalTime;
>>> which will re-initialize the necessary variables. You can call this
>>> routine at regular intervals as you see fit.
>>> In your case, you may want to insert a call to this after every clock
>>> update, which would be once a second.
>> Thanks, Michael, that's most helpful, I can call it once an hour
>> which will be more than enough.
>> However, it seems that in the version I have for the Raspberry Pi
>> (Laz: 1.0.6 FPC: 2.6.0) the "Unix" unit does not contain this
>> procedure. I did find the source code for it, but I don't want to
>> have to ask folk who might want to compile the clock program to have
>> to also copy many lines of code from the Unix unit. (Oh, and I tried
>> both "unix" and "Unix" - both seemed to work.)
>> Am I missing something?
> It's only in trunk for now.
It has been merged to 2.6.3 and thus will be part of 2.6.4.
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