On 10/27/05 12:36 PM, Ryan Wilcox didst favor us with:
> I am using the CFDate* APIs and have a problem with
> CFDateFormatterCreateStringWithAbsoluteTime() adding an offset to my hours.
>
> I want to feed Oct 27, 2005 12:00 PM and get a properly formatted string for
> another time zone (so, let's say that time in Paris, ala CEST timezone,
> currently at UTC + 2 hours). When I do this I get a 6 hour offset (I'm on the
> east coast, at UTC - 4 hours, so this makes sense). Here's what I'm doing:
>
> #1: Create an CFString ("Europe/Paris") and passing that into
> CFTimeZoneCreateWithName()
>
> #2: Create a gregorian date with the time I want, and converting to absolute
> time, using the Europe/Paris time zone I created in step 1.
>
> #3: Create a CFDateFormatter and using the current locale
>
> #4: ...CreateStringWithAbsoluteTime() with the absolute time I created in step
> 2.
>
> When I show the resulting string, it is offset the appropriate amount taking
> into account the time zone shift, but I'm not 100% sure I want this.
What exactly *do* you want?
>
> Basically: I'm not sure if what I have is a bug ("I didn't specify my current
> time zone, why would it take that into account when doing the to string
> conversion?") or expected behavior ("Given a certain time specified, what time
> is it in Paris right then?"). Maybe I just need to be pointed to the right doc
> page? (Or maybe I need to file a bug, I know where that is ;) )
As far as I can tell it's doing exactly what you asked. You created a
Gregorian date, converted it to an absolute time telling the system that it
was a Paris time, then displayed the time as a local time.
>
> Or, feedback from people more experienced with the CFDate* APIs could tell me
> an easier way to do this. That would be cool too ;)
An easier way to do what? Perhaps a specific example of what you're getting
and what you want instead would be helpful?
Larry
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