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Qt
Internal/Contributor docs for the Qt SDK. Note: These are NOT official API docs; those are found at https://doc.qt.io/
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Qt
Internal/Contributor docs for the Qt SDK. Note: These are NOT official API docs; those are found at https://doc.qt.io/
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\inmodule QtCore More...
#include <qtimezone.h>
\inmodule QtCore
QTimeZone identifies how a time representation relates to UTC.
\compares equality
When dates and times are combined, the meaning of the result depends on how time is being represented. There are various international standards for representing time; one of these, UTC, corresponds to the traditional standard of solar mean time at Greenwich (a.k.a. GMT). All other time systems supported by Qt are ultimately specified in relation to UTC. An instance of this class provides a stateless calculator for conversions between UTC and other time representations.
Some time representations are simply defined at a fixed offset to UTC. Others are defined by governments for use within their jurisdictions. The latter are properly known as time zones, but QTimeZone (since Qt 6.5) is unifies their representation with that of general time systems. One time zone generally supported on most operating systems is designated local time; this is presumed to correspond to the time zone within which the user is living.
For time zones other than local time, UTC and those at fixed offsets from UTC, Qt can only provide support when the operating system provides some way to access that information. When Qt is built, the timezone feature controls whether such information is available. When it is not, some constructors and methods of QTimeZone are excluded from its API; these are documented as depending on feature timezone. Note that, even when Qt is built with this feature enabled, it may be unavailable to users whose systems are misconfigured, or where some standard packages (for example, the tzdata package on Linux) are not installed. This feature is enabled by default when time zone information is available.
This class is primarily designed for use in QDateTime; most applications will not need to access this class directly and should instead use an instance of it when constructing a QDateTime.
Definition at line 25 of file qtimezone.h.
1.14.0