On segunda-feira, 26 de agosto de 2013 17:42:58, Calogero Mauceri wrote: > QDateTime myDateTime = QDateTime::fromTime_t(f_mtime); > > The date time printed doing a myDateTime.toString() is > > Wed Dec 5 12:36:18 2007 > > > Retrieving the last modified information using QFileInfo, the result is > different > > QFileInfo fi(filepath); > QDateTime myDateTime = fi.lastModified(); > > I get this result > > Wed Dec 5 11:36:18 2007 > > That is there is one hour difference. I guess the difference is due to > the daylight saving management, > but I can not understand how that management is performed. > > Note: if I look at the file properties on Windows dialog, the last > modified time is shown as > > Wed Dec 5 12:36:18 2007
Ah, Windows...
The problem might be simply a matter of timezones. The timestamps on files on
Windows are not stored with time_t, but with some Windows-specific data. We get
a FILETIME back from Win32.
Anyway, up until Qt 5.2, you cannot trust the output of a QDateTime with
qDebug since it does not include the timezone. You have to ensure that the
dates you're comparing by text are in the same timezone:
qDebug() << dt.toUTC();
--
Thiago Macieira - thiago.macieira (AT) intel.com
Software Architect - Intel Open Source Technology Center
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