There are many D-Bus signals emitted when the time zone changes. Try and make the effort to run dbus-monitor --system, please.
Failing that, the following pages exist: http://maemo.org/api_refs/5.0/5.0-final/libosso/group__Time.html http://maemo.org/api_refs/5.0/5.0-final/clockd/ Best Regards, Faheem On Sun, Jan 31, 2010 at 9:45 AM, ibrahim <ibrahim....@asgatech.com> wrote: > David Greaves wrote: >> >> ibrahim wrote: >> >>> >>> remi.denis-courm...@nokia.com wrote: >>> >>>> >>>> Hello, >>>> >>>> ----- Message d'origine ----- >>>> >>>>> >>>>> But the problem that can face me is the case when the user changes his >>>>> clock settings (i.e adjust phone's time to a different time). in this >>>>> case, the timer that has been set to some fixed duration can go wrong. >>>>> >>>> >>>> As a general rule, delay measurements should be done with the >>>> monotonic clock, not the wall clock (the real-time clock). As far as I >>>> know, Qt timers already do so internally. But of course, your own code >>>> should never request and use the wall clock for time measurements. >>>> >>>> >>> >>> I don't think I follow you! What do you mean by monotonic clock ? If I >>> don't depend on the system's clock to get current time, where else can I >>> get it from ? >>> Let me explain my problem again briefly, I want to know the current >>> time, calculate some future durations depending on it. Then I figure >>> out the time left to the upcoming duration and set it as interval to a >>> QTimer Object. But I'm afraid that user may change the system clock >>> (adjust the clock) So that my preset time will be invalid. >>> >> >> Just so you know... you're describing an implementation and asking if it >> does >> what you want without describing what you want. >> >> Example: "At 4am the user wants to play a sound at 8am (in 4hrs). At 6am >> the >> user changes timezone and it becomes 7am. The alarm should sound at 8am in >> the >> new timezone." >> >> My guess is that you know about interval timers but you should be using a >> wall-clock. Since you haven't specified what you want it's hard to know. >> >> David >> >> > > I am very sorry for not making my question clear enough. But the situation > you just described is JUST what I want to do! Yes, I want to do something > exactly as you described; I am now at 4:00 am, I need to make my app do > something at - say - 8:00 am (the time of the alarm is calculated and varies > from time to time, so i can't just use cron jobs to schedule the next > alarm), So, I used a QTimer and set its interval to the duration between now > and the next alarm. BUT this solution won't work if user decides to adjust > the system clock/change timezone. > What I'm asking is there anyway to GET NOTIFIED by the system when its > clock/timezone changes (in order to recalculate the next alarm and set my > Qtimer object to a new duration)?? any signal emitted ? anything? > > I hope i made my question clear and sorry for any inconvenience. > thanks again > _______________________________________________ > maemo-developers mailing list > maemo-developers@maemo.org > https://lists.maemo.org/mailman/listinfo/maemo-developers > _______________________________________________ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers
