Tools.h++ Manual

104011 Tandem Computers Incorporated 21-235
21
virtual void getBeginDaylight(struct tm*) const = 0;
virtual void getEndDaylight (struct tm*) const = 0;
Return with the struct tm argument set to the (local) time that daylight
savings time begins, or ends, for the year indicated by the tm_year member
passed in. If daylight savings time is not observed, the struct tm members
are all set to a negative value.
Note – that in the southern hemisphere, daylight savings time ends at an
earlier date than it begins.
virtual RWCString timeZoneName() const = 0;
virtual RWCString altZoneName() const = 0;
Return the name of (respectively) the standard and daylight savings time zones
represented, such as “PST” and “PDT”.
Static public
member functions static const RWZone& local();
Returns a reference to an RWZone representing local time, with daylight
savings time if observed. This is used as the default argument value for
RWDate and RWTime functions that take an RWZone.
static const RWZone& standard();
Returns a reference to an RWZone representing standard local time, with no
daylight savings time corrections.
static const RWZone& utc() ;
Returns a reference to an RWZone representing UTC (GMT) universal time.
static const RWZone* local(const RWZone*)
static const RWZone* standard(const RWZone*)
These functions allow the values returned by the other functions above to be
set. Each returns the previous value.
static constRWDaylightRule* dstRule(DstRule = NoAm) ;
Function dstRule() is provided for convenience in constructing
RWZoneSimple instances for time zones in which common daylight savings
time rules are obeyed. Currently two such rule systems are provided, NoAm for
the U.S.A. and Canada, and WeEu for most of Western Europe. The result of
calling dstRule() is normally passed to the RWZoneSimple constructor.