wxDateTime class represents an absolute moment in the time.
+ The type @c wxDateTime_t is typedefed as <tt>unsigned short</tt> and is
+ used to contain the number of years, hours, minutes, seconds and
+ milliseconds.
+
+
+ @section datetime_constants Constants
+
+ Global constant wxDefaultDateTime and synonym for it wxInvalidDateTime are
+ defined. This constant will be different from any valid wxDateTime object.
+
+ All the following constants are defined inside wxDateTime class (i.e., to
+ refer to them you should prepend their names with "wxDateTime::").
+
+ Time zone symbolic names:
+
+ @code
+ enum TZ
+ {
+ // the time in the current time zone
+ Local,
+
+ // zones from GMT (= Greenwhich Mean Time): they're guaranteed to be
+ // consequent numbers, so writing something like `GMT0 + offset' is
+ // safe if abs(offset) <= 12
+
+ // underscore stands for minus
+ GMT_12, GMT_11, GMT_10, GMT_9, GMT_8, GMT_7,
+ GMT_6, GMT_5, GMT_4, GMT_3, GMT_2, GMT_1,
+ GMT0,
+ GMT1, GMT2, GMT3, GMT4, GMT5, GMT6,
+ GMT7, GMT8, GMT9, GMT10, GMT11, GMT12, GMT13,
+ // Note that GMT12 and GMT_12 are not the same: there is a difference
+ // of exactly one day between them
+
+ // some symbolic names for TZ
+
+ // Europe
+ WET = GMT0, // Western Europe Time
+ WEST = GMT1, // Western Europe Summer Time
+ CET = GMT1, // Central Europe Time
+ CEST = GMT2, // Central Europe Summer Time
+ EET = GMT2, // Eastern Europe Time
+ EEST = GMT3, // Eastern Europe Summer Time
+ MSK = GMT3, // Moscow Time
+ MSD = GMT4, // Moscow Summer Time
+
+ // US and Canada
+ AST = GMT_4, // Atlantic Standard Time
+ ADT = GMT_3, // Atlantic Daylight Time
+ EST = GMT_5, // Eastern Standard Time
+ EDT = GMT_4, // Eastern Daylight Saving Time
+ CST = GMT_6, // Central Standard Time
+ CDT = GMT_5, // Central Daylight Saving Time
+ MST = GMT_7, // Mountain Standard Time
+ MDT = GMT_6, // Mountain Daylight Saving Time
+ PST = GMT_8, // Pacific Standard Time
+ PDT = GMT_7, // Pacific Daylight Saving Time
+ HST = GMT_10, // Hawaiian Standard Time
+ AKST = GMT_9, // Alaska Standard Time
+ AKDT = GMT_8, // Alaska Daylight Saving Time
+
+ // Australia
+
+ A_WST = GMT8, // Western Standard Time
+ A_CST = GMT13 + 1, // Central Standard Time (+9.5)
+ A_EST = GMT10, // Eastern Standard Time
+ A_ESST = GMT11, // Eastern Summer Time
+
+ // New Zealand
+ NZST = GMT12, // Standard Time
+ NZDT = GMT13, // Daylight Saving Time
+
+ // Universal Coordinated Time = the new and politically correct name
+ // for GMT
+ UTC = GMT0
+ };
+ @endcode
+
+ Month names: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec and
+ Inv_Month for an invalid month are the values of @c wxDateTime::Month enum.
+
+ Likewise, Sun, Mon, Tue, Wed, Thu, Fri, Sat, and Inv_WeekDay are the values
+ in @c wxDateTime::WeekDay enum.
+
+ Finally, Inv_Year is defined to be an invalid value for year parameter.
+
+ GetMonthName() and GetWeekDayName() functions use the following flags:
+
+ @code
+ enum NameFlags
+ {
+ Name_Full = 0x01, // return full name
+ Name_Abbr = 0x02 // return abbreviated name
+ };
+ @endcode
+
+ Several functions accept an extra parameter specifying the calendar to use
+ (although most of them only support now the Gregorian calendar). This
+ parameters is one of the following values:
+
+ @code
+ enum Calendar
+ {
+ Gregorian, // calendar currently in use in Western countries
+ Julian // calendar in use since -45 until the 1582 (or later)
+ };
+ @endcode
+
+ Date calculations often depend on the country and wxDateTime allows to set
+ the country whose conventions should be used using SetCountry(). It takes
+ one of the following values as parameter:
+
+ @code
+ enum Country
+ {
+ Country_Unknown, // no special information for this country
+ Country_Default, // set the default country with SetCountry() method
+ // or use the default country with any other
+
+ Country_WesternEurope_Start,
+ Country_EEC = Country_WesternEurope_Start,
+ France,
+ Germany,
+ UK,
+ Country_WesternEurope_End = UK,
+
+ Russia,
+
+ USA
+ };
+ @endcode
+
+ Different parts of the world use different conventions for the week start.
+ In some countries, the week starts on Sunday, while in others -- on Monday.
+ The ISO standard doesn't address this issue, so we support both conventions
+ in the functions whose result depends on it (GetWeekOfYear() and
+ GetWeekOfMonth()).
+
+ The desired behvaiour may be specified by giving one of the following
+ constants as argument to these functions:
+
+ @code
+ enum WeekFlags
+ {
+ Default_First, // Sunday_First for US, Monday_First for the rest
+ Monday_First, // week starts with a Monday
+ Sunday_First // week starts with a Sunday
+ };
+ @endcode
+
+
+ @section datetime_static Static Functions
+
+ All static functions either set or return the static variables of
+ wxDateSpan (the country), return the current moment, year, month or number
+ of days in it, or do some general calendar-related actions.
+
+ Please note that although several function accept an extra Calendar
+ parameter, it is currently ignored as only the Gregorian calendar is
+ supported. Future versions will support other calendars.
+
+ @beginWxPythonOnly
+ These methods are standalone functions named
+ "wxDateTime_<StaticMethodName>" in wxPython.
+ @endWxPythonOnly
+
+
+ @section datetime_formatting Date Formatting and Parsing
+
+ The date formatting and parsing functions convert wxDateTime objects to and
+ from text. The conversions to text are mostly trivial: you can either do it
+ using the default date and time representations for the current locale
+ (FormatDate() and FormatTime()), using the international standard
+ representation defined by ISO 8601 (FormatISODate(), FormatISOTime() and
+ FormatISOCombined()) or by specifying any format at all and using Format()
+ directly.
+
+ The conversions from text are more interesting, as there are much more
+ possibilities to care about. The simplest cases can be taken care of with
+ ParseFormat() which can parse any date in the given (rigid) format.
+ ParseRfc822Date() is another function for parsing dates in predefined
+ format -- the one of RFC 822 which (still...) defines the format of email
+ messages on the Internet. This format can not be described with
+ @c strptime(3)-like format strings used by Format(), hence the need for a
+ separate function.
+
+ But the most interesting functions are ParseTime(), ParseDate() and
+ ParseDateTime(). They try to parse the date and time (or only one of them)
+ in 'free' format, i.e. allow them to be specified in any of possible ways.
+ These functions will usually be used to parse the (interactive) user input
+ which is not bound to be in any predefined format. As an example,
+ ParseDateTime() can parse the strings such as "tomorrow", "March first" and
+ even "next Sunday".
+
+ Finally notice that each of the parsing functions is available in several
+ overloads: if the input string is a narrow (@c char *) string, then a
+ narrow pointer is returned. If the input string is a wide string, a wide
+ char pointer is returned. Finally, if the input parameter is a wxString, a
+ narrow char pointer is also returned for backwards compatibility but there
+ is also an additional argument of wxString::const_iterator type in which,
+ if it is not @NULL, an iterator pointing to the end of the scanned string
+ part is returned.
+
+
@library{wxbase}
@category{data}
@stdobjects
- ::wxDefaultDateTime
+ - ::wxDefaultDateTime
- @see @ref overview_wxdatetimeoverview "Date classes overview", wxTimeSpan,
- wxDateSpan, wxCalendarCtrl
+ @see @ref overview_datetime, wxTimeSpan, wxDateSpan, wxCalendarCtrl
*/
class wxDateTime
{
public:
/**
- Same as @ref setdate() Set
+ @name Constructors, Assignment Operators and Setters
+
+ Constructors and various Set() methods are collected here. If you
+ construct a date object from separate values for day, month and year,
+ you should use IsValid() method to check that the values were correct
+ as constructors can not return an error code.
*/
- wxDateTime(wxDateTime_t day, Month month = Inv_Month,
- int year = Inv_Year, wxDateTime_t hour = 0,
- wxDateTime_t minute = 0,
- wxDateTime_t second = 0,
- wxDateTime_t millisec = 0);
+ //@{
/**
- Here are the trivial accessors. Other functions, which might have to perform
- some more complicated calculations to find the answer are under the
- @ref overview_datetimecalculations "Calendar calculations" section.
- IsValid()
-
- GetTicks()
-
- GetCentury()
-
- GetYear()
-
- GetMonth()
-
- GetDay()
-
- GetWeekDay()
+ Default constructor. Use one of the Set() functions to initialize the
+ object later.
+ */
+ wxDateTime();
+ /**
+ Same as Set().
- GetHour()
+ @beginWxPythonOnly
+ This constructor is named "wxDateTimeFromTimeT" in wxPython.
+ @endWxPythonOnly
+ */
+ wxDateTime& wxDateTime(time_t timet);
+ /**
+ Same as Set().
- GetMinute()
+ @beginWxPythonOnly Unsupported. @endWxPythonOnly
+ */
+ wxDateTime& wxDateTime(const struct tm& tm);
+ /**
+ Same as Set().
- GetSecond()
+ @beginWxPythonOnly
+ This constructor is named "wxDateTimeFromJDN" in wxPython.
+ @endWxPythonOnly
+ */
+ wxDateTime& wxDateTime(double jdn);
+ /**
+ Same as Set().
- GetMillisecond()
+ @beginWxPythonOnly
+ This constructor is named "wxDateTimeFromHMS" in wxPython.
+ @endWxPythonOnly
+ */
+ wxDateTime& wxDateTime(wxDateTime_t hour, wxDateTime_t minute = 0,
+ wxDateTime_t second = 0, wxDateTime_t millisec = 0);
+ /**
+ Same as Set().
- GetDayOfYear()
+ @beginWxPythonOnly
+ This constructor is named "wxDateTimeFromDMY" in wxPython.
+ @endWxPythonOnly
+ */
+ wxDateTime(wxDateTime_t day, Month month = Inv_Month,
+ int year = Inv_Year, wxDateTime_t hour = 0,
+ wxDateTime_t minute = 0, wxDateTime_t second = 0,
+ wxDateTime_t millisec = 0);
- GetWeekOfYear()
+ /**
+ Reset time to midnight (00:00:00) without changing the date.
+ */
+ wxDateTime& ResetTime();
- GetWeekOfMonth()
+ /**
+ Constructs the object from @a timet value holding the number of seconds
+ since Jan 1, 1970.
- GetYearDay()
+ @beginWxPythonOnly
+ This method is named "SetTimeT" in wxPython.
+ @endWxPythonOnly
+ */
+ wxDateTime& Set(time_t timet);
+ /**
+ Sets the date and time from the broken down representation in the
+ standard @a tm structure.
- IsWorkDay()
+ @beginWxPythonOnly Unsupported. @endWxPythonOnly
+ */
+ wxDateTime& Set(const struct tm& tm);
+ /**
+ Sets the date from the so-called Julian Day Number.
- IsGregorianDate()
+ By definition, the Julian Day Number, usually abbreviated as JDN, of a
+ particular instant is the fractional number of days since 12 hours
+ Universal Coordinated Time (Greenwich mean noon) on January 1 of the
+ year -4712 in the Julian proleptic calendar.
- GetAsDOS()
+ @beginWxPythonOnly
+ This method is named "SetJDN" in wxPython.
+ @endWxPythonOnly
*/
+ wxDateTime& Set(double jdn);
+ /**
+ Sets the date to be equal to Today() and the time from supplied
+ parameters.
-
- //@{
+ @beginWxPythonOnly
+ This method is named "SetHMS" in wxPython.
+ @endWxPythonOnly
+ */
+ wxDateTime& Set(wxDateTime_t hour, wxDateTime_t minute = 0,
+ wxDateTime_t second = 0, wxDateTime_t millisec = 0);
/**
- Adds the given date span to this object.
+ Sets the date and time from the parameters.
*/
- wxDateTime Add(const wxDateSpan& diff);
- const wxDateTime& Add(const wxDateSpan& diff);
- wxDateTime operator+=(const wxDateSpan& diff);
- //@}
+ wxDateTime& Set(wxDateTime_t day, Month month = Inv_Month,
+ int year = Inv_Year, wxDateTime_t hour = 0,
+ wxDateTime_t minute = 0, wxDateTime_t second = 0,
+ wxDateTime_t millisec = 0);
/**
- Some degree of support for the date units used in astronomy and/or history is
- provided. You can construct a wxDateTime object from a
- @ref setjdn() JDN and you may also get its JDN,
- @ref getmodifiedjuliandaynumber() MJD or
- @ref getratadie() "Rata Die number" from it.
- @ref wxdatetimejdn() "wxDateTime(double jdn)"
-
- @ref setjdn() "Set(double jdn)"
-
- GetJulianDayNumber()
-
- GetJDN()
-
- GetModifiedJulianDayNumber()
+ Sets the day without changing other date components.
+ */
+ wxDateTime& SetDay(short unsigned int);
- GetMJD()
+ /**
+ Sets the date from the date and time in DOS format.
+ */
+ wxDateTime& SetFromDOS(unsigned long ddt);
- GetRataDie()
+ /**
+ Sets the hour without changing other date components.
*/
+ wxDateTime& SetHour(short unsigned int);
+ /**
+ Sets the millisecond without changing other date components.
+ */
+ wxDateTime& SetMillisecond(short unsigned int);
/**
- The functions in this section perform the basic calendar calculations, mostly
- related to the week days. They allow to find the given week day in the
- week with given number (either in the month or in the year) and so on.
- All (non-const) functions in this section don't modify the time part of the
- wxDateTime -- they only work with the date part of it.
- SetToWeekDayInSameWeek()
+ Sets the minute without changing other date components.
+ */
+ wxDateTime& SetMinute(short unsigned int);
- GetWeekDayInSameWeek()
+ /**
+ Sets the month without changing other date components.
+ */
+ wxDateTime& SetMonth(Month month);
- SetToNextWeekDay()
+ /**
+ Sets the second without changing other date components.
+ */
+ wxDateTime& SetSecond(short unsigned int);
- GetNextWeekDay()
+ /**
+ Sets the date and time of to the current values. Same as assigning the
+ result of Now() to this object.
+ */
+ wxDateTime& SetToCurrent();
- SetToPrevWeekDay()
+ /**
+ Sets the year without changing other date components.
+ */
+ wxDateTime& SetYear(int year);
- GetPrevWeekDay()
+ /**
+ Same as Set().
+ */
+ wxDateTime& operator=(time_t timet);
+ /**
+ Same as Set().
+ */
+ wxDateTime& operator=(const struct tm& tm);
- SetToWeekDay()
+ //@}
- @ref wxDateTime::getweekday2 GetWeekDay
- SetToLastWeekDay()
- GetLastWeekDay()
+ /**
+ @name Accessors
- SetToWeekOfYear()
+ Here are the trivial accessors. Other functions, which might have to
+ perform some more complicated calculations to find the answer are under
+ the "Date Arithmetics" section.
+ */
+ //@{
- SetToLastMonthDay()
+ /**
+ Returns the date and time in DOS format.
+ */
+ long unsigned int GetAsDOS() const;
- GetLastMonthDay()
+ /**
+ Returns the century of this date.
+ */
+ int GetCentury(const TimeZone& tz = Local) const;
- SetToYearDay()
+ /**
+ Returns the day in the given timezone (local one by default).
+ */
+ short unsigned int GetDay(const TimeZone& tz = Local) const;
- GetYearDay()
+ /**
+ Returns the day of the year (in 1...366 range) in the given timezone
+ (local one by default).
*/
+ short unsigned int GetDayOfYear(const TimeZone& tz = Local) const;
+ /**
+ Returns the milliseconds in the given timezone (local one by default).
+ */
+ short unsigned int GetMillisecond(const TimeZone& tz = Local) const;
/**
- Constructors and various @c Set() methods are collected here. If you
- construct a date object from separate values for day, month and year, you
- should use IsValid() method to check that the
- values were correct as constructors can not return an error code.
- @ref wxdatetimedef() wxDateTime
+ Returns the minute in the given timezone (local one by default).
+ */
+ short unsigned int GetMinute(const TimeZone& tz = Local) const;
- @ref wxdatetimetimet() wxDateTime(time_t)
+ /**
+ Returns the month in the given timezone (local one by default).
+ */
+ Month GetMonth(const TimeZone& tz = Local) const;
- @ref wxdatetimetm() "wxDateTime(struct tm)"
+ /**
+ Returns the seconds in the given timezone (local one by default).
+ */
+ short unsigned int GetSecond(const TimeZone& tz = Local) const;
- @ref wxdatetimejdn() "wxDateTime(double jdn)"
+ /**
+ Returns the number of seconds since Jan 1, 1970. An assert failure will occur
+ if the date is not in the range covered by @c time_t type.
+ */
+ time_t GetTicks() const;
- @ref wxdatetimetime() "wxDateTime(h, m, s, ms)"
+ /**
+ Returns the hour in the given timezone (local one by default).
+ */
+ short unsigned int GetHour(const TimeZone& tz = Local) const;
- @ref wxdatetimedate() "wxDateTime(day, mon, year, h, m, s, ms)"
+ /**
+ Returns the copy of this object to which
+ SetToWeekDay() was applied.
+ */
+ wxDateTime GetWeekDay(WeekDay weekday, int n = 1,
+ Month month = Inv_Month,
+ int year = Inv_Year) const;
- SetToCurrent()
+ /**
+ Returns the ordinal number of the week in the month (in 1...5 range).
+ As GetWeekOfYear(), this function supports
+ both conventions for the week start. See the description of these
+ @ref overview_wxdatetime "week start" conventions.
+ */
+ wxDateTime_t GetWeekOfMonth(WeekFlags flags = Monday_First,
+ const TimeZone& tz = Local) const;
- @ref settimet() Set(time_t)
+ /**
+ Returns the number of the week of the year this date is in. The first week of
+ the year is, according to international standards, the one containing Jan 4 or,
+ equivalently, the first week which has Thursday in this year. Both of these
+ definitions are the same as saying that the first week of the year must contain
+ more than half of its days in this year. Accordingly, the week number will
+ always be in 1...53 range (52 for non-leap years).
+ The function depends on the @ref overview_wxdatetime "week start" convention
+ specified by the @a flags argument but its results for
+ @c Sunday_First are not well-defined as the ISO definition quoted above
+ applies to the weeks starting on Monday only.
+ */
+ wxDateTime_t GetWeekOfYear(WeekFlags flags = Monday_First,
+ const TimeZone& tz = Local) const;
- @ref settm() "Set(struct tm)"
+ /**
+ Returns the year in the given timezone (local one by default).
+ */
+ int GetYear(const TimeZone& tz = Local) const;
- @ref setjdn() "Set(double jdn)"
+ /**
+ Returns the copy of this object to which
+ SetToYearDay() was applied.
+ */
+ wxDateTime GetYearDay(short unsigned int) const;
- @ref settime() "Set(h, m, s, ms)"
+ /**
+ Returns @true if the given date is later than the date of adoption of the
+ Gregorian calendar in the given country (and hence the Gregorian calendar
+ calculations make sense for it).
+ */
+ bool IsGregorianDate(GregorianAdoption country = Gr_Standard) const;
- @ref setdate() "Set(day, mon, year, h, m, s, ms)"
+ /**
+ Returns @true if the object represents a valid time moment.
+ */
+ bool IsValid() const;
- @ref setfromdos() "SetFromDOS(unsigned long ddt)"
+ /**
+ Returns @true is this day is not a holiday in the given country.
+ */
+ bool IsWorkDay(Country country = Country_Default) const;
- ResetTime()
+ //@}
- SetYear()
- SetMonth()
- @ref setdate() SetDay
+ /**
+ @name Date Comparison
- SetHour()
+ There are several functions to allow date comparison. To supplement
+ them, a few global operators, etc taking wxDateTime are defined.
+ */
+ //@{
- SetMinute()
+ /**
+ Returns @true if this date precedes the given one.
+ */
+ bool IsEarlierThan(const wxDateTime& datetime) const;
- SetSecond()
+ /**
+ Returns @true if the two dates are strictly identical.
+ */
+ bool IsEqualTo(const wxDateTime& datetime) const;
- SetMillisecond()
+ /**
+ Returns @true if the date is equal to another one up to the given time
+ interval, i.e. if the absolute difference between the two dates is less than
+ this interval.
+ */
+ bool IsEqualUpTo(const wxDateTime& dt, const wxTimeSpan& ts) const;
- @ref operatoreqtimet() operator=(time_t)
+ /**
+ Returns @true if this date is later than the given one.
+ */
+ bool IsLaterThan(const wxDateTime& datetime) const;
- @ref operatoreqtm() "operator=(struct tm)"
+ /**
+ Returns @true if the date is the same without comparing the time parts.
*/
+ bool IsSameDate(const wxDateTime& dt) const;
+ /**
+ Returns @true if the time is the same (although dates may differ).
+ */
+ bool IsSameTime(const wxDateTime& dt) const;
/**
- Converts the year in absolute notation (i.e. a number which can be negative,
- positive or zero) to the year in BC/AD notation. For the positive years,
- nothing is done, but the year 0 is year 1 BC and so for other years there is a
- difference of 1.
- This function should be used like this:
+ Returns @true if this date lies strictly between the two others,
+
+ @see IsBetween()
*/
- static int ConvertYearToBC(int year);
+ bool IsStrictlyBetween(const wxDateTime& t1,
+ const wxDateTime& t2) const;
/**
- These functions carry out arithmetics() on the wxDateTime
- objects. As explained in the overview, either wxTimeSpan or wxDateSpan may be
- added to wxDateTime, hence all functions are overloaded to accept both
- arguments.
- Also, both @c Add() and @c Subtract() have both const and non-const
- version. The first one returns a new object which represents the
- sum/difference of the original one with the argument while the second form
- modifies the object to which it is applied. The operators -= and += are
- defined to be equivalent to the second forms of these functions.
- @ref addts() Add(wxTimeSpan)
+ Returns @true if IsStrictlyBetween()
+ is @true or if the date is equal to one of the limit values.
- @ref addds() Add(wxDateSpan)
+ @see IsStrictlyBetween()
+ */
+ bool IsBetween(const wxDateTime& t1, const wxDateTime& t2) const;
- @ref subtractts() Subtract(wxTimeSpan)
+ //@}
- @ref subtractds() Subtract(wxDateSpan)
- @ref subtractdt() Subtract(wxDateTime)
- @ref addts() oparator+=(wxTimeSpan)
+ /**
+ @name Date Arithmetics
- @ref addds() oparator+=(wxDateSpan)
+ These functions carry out
+ @ref overview_datetime_arithmetics "arithmetics" on the wxDateTime
+ objects. As explained in the overview, either wxTimeSpan or wxDateSpan
+ may be added to wxDateTime, hence all functions are overloaded to
+ accept both arguments.
- @ref subtractts() oparator-=(wxTimeSpan)
+ Also, both Add() and Subtract() have both const and non-const version.
+ The first one returns a new object which represents the sum/difference
+ of the original one with the argument while the second form modifies
+ the object to which it is applied. The operators "-=" and "+=" are
+ defined to be equivalent to the second forms of these functions.
- @ref subtractds() oparator-=(wxDateSpan)
+ <!--
+ Add(wxTimeSpan)
+ Subtract(wxTimeSpan)
+ Subtract(wxDateSpan)
+ oparator+=(wxTimeSpan)
+ oparator-=(wxTimeSpan)
+ oparator-=(wxDateSpan)
+ -->
*/
+ //@{
+ /**
+ Adds the given date span to this object.
+ */
+ wxDateTime Add(const wxDateSpan& diff);
/**
- There are several function to allow date comparison. To supplement them, a few
- global operators , etc taking wxDateTime are defined.
- IsEqualTo()
+ Adds the given date span to this object.
+ */
+ const wxDateTime& Add(const wxDateSpan& diff);
- IsEarlierThan()
+ /**
+ Adds the given date span to this object.
+ */
+ wxDateTime operator+=(const wxDateSpan& diff);
- IsLaterThan()
+ /**
+ Subtracts another date from this one and returns the difference between them
+ as wxTimeSpan.
+ */
+ wxTimeSpan Subtract(const wxDateTime& dt) const;
- IsStrictlyBetween()
+ //@}
- IsBetween()
- IsSameDate()
- IsSameTime()
+ /**
+ @name Date Formatting and Parsing
- IsEqualUpTo()
+ See @ref datetime_formatting
*/
-
+ //@{
/**
This function does the same as the standard ANSI C @c strftime(3) function.
wxString FormatTime() const;
/**
- Transform the date from the given time zone to the local one. If @a noDST is
- @true, no DST adjustments will be made.
- Returns the date in the local time zone.
+ This function is like ParseDateTime(), but it
+ only allows the date to be specified. It is thus less flexible then
+ ParseDateTime(), but also has less chances to
+ misinterpret the user input.
+ Returns @NULL if the conversion failed, otherwise return the pointer to
+ the character which stopped the scan.
*/
- wxDateTime FromTimezone(const TimeZone& tz,
- bool noDST = false) const;
-
+ const char* ParseDate(const wxString& date,
+ wxString::const_iterator* end = NULL);
/**
- Returns the translations of the strings @c AM and @c PM used for time
- formatting for the current locale. Either of the pointers may be @NULL if
- the corresponding value is not needed.
+
*/
- static void GetAmPmStrings(wxString* am, wxString* pm);
-
- /**
- Returns the date and time in
- DOS
- format.
- */
- long unsigned int GetAsDOS() const;
-
- /**
- Get the beginning of DST for the given country in the given year (current one
- by default). This function suffers from limitations described in
- @ref overview_tdatedst "DST overview".
-
- @see GetEndDST()
- */
- static wxDateTime GetBeginDST(int year = Inv_Year,
- Country country = Country_Default);
-
- /**
- Returns the century of this date.
- */
- int GetCentury(const TimeZone& tz = Local) const;
-
- /**
- Returns the current default country. The default country is used for DST
- calculations, for example.
-
- @see SetCountry()
- */
- static Country GetCountry();
-
- /**
- Get the current month in given calendar (only Gregorian is currently supported).
- */
- static Month GetCurrentMonth(Calendar cal = Gregorian);
-
- /**
- Get the current year in given calendar (only Gregorian is currently supported).
- */
- static int GetCurrentYear(Calendar cal = Gregorian);
-
- /**
- Returns the object having the same date component as this one but time of
- 00:00:00.
-
- @wxsince{2.8.2}
-
- @see ResetTime()
- */
- wxDateTime GetDateOnly() const;
-
- /**
- Returns the day in the given timezone (local one by default).
- */
- short unsigned int GetDay(const TimeZone& tz = Local) const;
-
- /**
- Returns the day of the year (in 1...366 range) in the given timezone
- (local one by default).
- */
- short unsigned int GetDayOfYear(const TimeZone& tz = Local) const;
-
- /**
- Returns the end of DST for the given country in the given year (current one by
- default).
-
- @see GetBeginDST()
- */
- static wxDateTime GetEndDST(int year = Inv_Year,
- Country country = Country_Default);
-
- /**
- Returns the hour in the given timezone (local one by default).
- */
- short unsigned int GetHour(const TimeZone& tz = Local) const;
-
- /**
- Synonym for GetJulianDayNumber().
- */
- double GetJDN() const;
-
- /**
- Returns the @ref setjdn() JDN corresponding to this date. Beware
- of rounding errors!
-
- @see GetModifiedJulianDayNumber()
- */
- double GetJulianDayNumber() const;
-
- /**
- Returns the copy of this object to which
- SetToLastMonthDay() was applied.
- */
- wxDateTime GetLastMonthDay(Month month = Inv_Month,
- int year = Inv_Year) const;
-
- /**
- Returns the copy of this object to which
- SetToLastWeekDay() was applied.
- */
- wxDateTime GetLastWeekDay(WeekDay weekday,
- Month month = Inv_Month,
- int year = Inv_Year);
-
- /**
- Synonym for GetModifiedJulianDayNumber().
- */
- double GetMJD() const;
-
- /**
- Returns the milliseconds in the given timezone (local one by default).
- */
- short unsigned int GetMillisecond(const TimeZone& tz = Local) const;
-
- /**
- Returns the minute in the given timezone (local one by default).
- */
- short unsigned int GetMinute(const TimeZone& tz = Local) const;
-
- /**
- Returns the @e Modified Julian Day Number (MJD) which is, by definition,
- equal to JDN - 2400000.5. The MJDs are simpler to work with as the integral
- MJDs correspond to midnights of the dates in the Gregorian calendar and not th
- noons like JDN. The MJD 0 is Nov 17, 1858.
- */
- double GetModifiedJulianDayNumber() const;
-
- /**
- Returns the month in the given timezone (local one by default).
- */
- Month GetMonth(const TimeZone& tz = Local) const;
-
- /**
- Gets the full (default) or abbreviated (specify @c Name_Abbr name of the
- given month.
-
- @see GetWeekDayName()
- */
- static wxString GetMonthName(Month month,
- NameFlags flags = Name_Full);
-
- /**
- Returns the copy of this object to which
- SetToNextWeekDay() was applied.
- */
- wxDateTime GetNextWeekDay(WeekDay weekday) const;
-
- //@{
- /**
- Returns the number of days in the given year or in the given month of the
- year.
- The only supported value for @a cal parameter is currently @c Gregorian.
- */
- static wxDateTime_t GetNumberOfDays(int year,
- Calendar cal = Gregorian);
- static wxDateTime_t GetNumberOfDays(Month month,
- int year = Inv_Year,
- Calendar cal = Gregorian);
- //@}
-
- /**
- Returns the copy of this object to which
- SetToPrevWeekDay() was applied.
- */
- wxDateTime GetPrevWeekDay(WeekDay weekday) const;
-
- /**
- Return the @e Rata Die number of this date.
- By definition, the Rata Die number is a date specified as the number of days
- relative to a base date of December 31 of the year 0. Thus January 1 of the
- year 1 is Rata Die day 1.
- */
- double GetRataDie() const;
-
- /**
- Returns the seconds in the given timezone (local one by default).
- */
- short unsigned int GetSecond(const TimeZone& tz = Local) const;
-
- /**
- Returns the number of seconds since Jan 1, 1970. An assert failure will occur
- if the date is not in the range covered by @c time_t type.
- */
- time_t GetTicks() const;
-
- /**
- Returns the current time.
- */
- static time_t GetTimeNow();
-
- /**
- Returns broken down representation of the date and time.
- */
- Tm GetTm(const TimeZone& tz = Local) const;
-
- /**
- Returns the current time broken down. Note that this function returns a
- pointer to a static buffer that's reused by calls to this function and
- certain C library functions (e.g. localtime). If there is any chance your
- code might be used in a multi-threaded application, you really should use
- the flavour of function GetTmNow()
- taking a parameter.
- */
- static struct tm* GetTmNow();
-
- /**
- Returns the copy of this object to which
- SetToWeekDay() was applied.
- */
- wxDateTime GetWeekDay(WeekDay weekday, int n = 1,
- Month month = Inv_Month,
- int year = Inv_Year) const;
-
- /**
- Returns the copy of this object to which
- SetToWeekDayInSameWeek() was
- applied.
- */
- wxDateTime GetWeekDayInSameWeek(WeekDay weekday,
- WeekFlags flags = Monday_First) const;
-
- /**
- Gets the full (default) or abbreviated (specify @c Name_Abbr name of the
- given week day.
-
- @see GetMonthName()
- */
- static wxString GetWeekDayName(WeekDay weekday,
- NameFlags flags = Name_Full);
-
- /**
- Returns the ordinal number of the week in the month (in 1...5 range).
- As GetWeekOfYear(), this function supports
- both conventions for the week start. See the description of these
- @ref overview_wxdatetime "week start" conventions.
- */
- wxDateTime_t GetWeekOfMonth(WeekFlags flags = Monday_First,
- const TimeZone& tz = Local) const;
-
- /**
- Returns the number of the week of the year this date is in. The first week of
- the year is, according to international standards, the one containing Jan 4 or,
- equivalently, the first week which has Thursday in this year. Both of these
- definitions are the same as saying that the first week of the year must contain
- more than half of its days in this year. Accordingly, the week number will
- always be in 1...53 range (52 for non-leap years).
- The function depends on the @ref overview_wxdatetime "week start" convention
- specified by the @a flags argument but its results for
- @c Sunday_First are not well-defined as the ISO definition quoted above
- applies to the weeks starting on Monday only.
- */
- wxDateTime_t GetWeekOfYear(WeekFlags flags = Monday_First,
- const TimeZone& tz = Local) const;
-
- /**
- Returns the year in the given timezone (local one by default).
- */
- int GetYear(const TimeZone& tz = Local) const;
-
- /**
- Returns the copy of this object to which
- SetToYearDay() was applied.
- */
- wxDateTime GetYearDay(short unsigned int) const;
-
- /**
- Returns @true if IsStrictlyBetween()
- is @true or if the date is equal to one of the limit values.
-
- @see IsStrictlyBetween()
- */
- bool IsBetween(const wxDateTime& t1, const wxDateTime& t2) const;
-
- /**
- Returns @true if the DST is applied for this date in the given country.
- */
- int IsDST(Country country = Country_Default) const;
-
- /**
- Returns @true if DST was used n the given year (the current one by
- default) in the given country.
- */
- static bool IsDSTApplicable(int year = Inv_Year,
- Country country = Country_Default);
-
- /**
- Returns @true if this date precedes the given one.
- */
- bool IsEarlierThan(const wxDateTime& datetime) const;
-
- /**
- Returns @true if the two dates are strictly identical.
- */
- bool IsEqualTo(const wxDateTime& datetime) const;
-
- /**
- Returns @true if the date is equal to another one up to the given time
- interval, i.e. if the absolute difference between the two dates is less than
- this interval.
- */
- bool IsEqualUpTo(const wxDateTime& dt, const wxTimeSpan& ts) const;
-
- /**
- Returns @true if the given date is later than the date of adoption of the
- Gregorian calendar in the given country (and hence the Gregorian calendar
- calculations make sense for it).
- */
- bool IsGregorianDate(GregorianAdoption country = Gr_Standard) const;
-
- /**
- Returns @true if this date is later than the given one.
- */
- bool IsLaterThan(const wxDateTime& datetime) const;
-
- /**
- Returns @true if the @a year is a leap one in the specified calendar.
- This functions supports Gregorian and Julian calendars.
- */
- static bool IsLeapYear(int year = Inv_Year,
- Calendar cal = Gregorian);
-
- /**
- Returns @true if the date is the same without comparing the time parts.
- */
- bool IsSameDate(const wxDateTime& dt) const;
-
- /**
- Returns @true if the time is the same (although dates may differ).
- */
- bool IsSameTime(const wxDateTime& dt) const;
-
- /**
- Returns @true if this date lies strictly between the two others,
-
- @see IsBetween()
- */
- bool IsStrictlyBetween(const wxDateTime& t1,
- const wxDateTime& t2) const;
-
- /**
- Returns @true if the object represents a valid time moment.
- */
- bool IsValid() const;
-
- /**
- This function returns @true if the specified (or default) country is one
- of Western European ones. It is used internally by wxDateTime to determine the
- DST convention and date and time formatting rules.
- */
- static bool IsWestEuropeanCountry(Country country = Country_Default);
-
- /**
- Returns @true is this day is not a holiday in the given country.
- */
- bool IsWorkDay(Country country = Country_Default) const;
-
- /**
- Same as FromTimezone() but modifies the object
- in place.
- */
- wxDateTime MakeFromTimezone(const TimeZone& tz,
- bool noDST = false);
-
- /**
- Modifies the object in place to represent the date in another time zone. If
- @a noDST is @true, no DST adjustments will be made.
- */
- wxDateTime MakeTimezone(const TimeZone& tz,
- bool noDST = false);
-
- /**
- This is the same as calling MakeTimezone() with
- the argument @c GMT0.
- */
- wxDateTime& MakeUTC(bool noDST = false);
-
+ const char* ParseDate(const char* date);
/**
- Returns the object corresponding to the current time.
- Example:
-
- Note that this function is accurate up to second:
- UNow() should be used for better precision
- (but it is less efficient and might not be available on all platforms).
-
- @see Today()
- */
- static wxDateTime Now();
- //@{
- /**
- This function is like ParseDateTime(), but it
- only allows the date to be specified. It is thus less flexible then
- ParseDateTime(), but also has less chances to
- misinterpret the user input.
- Returns @NULL if the conversion failed, otherwise return the pointer to
- the character which stopped the scan.
*/
- const char* ParseDate(const wxString& date,
- wxString::const_iterator* end = NULL);
- const char* ParseDate(const char* date);
const wchar_t* ParseDate(const wchar_t* date);
- //@}
- //@{
/**
Parses the string @a datetime containing the date and time in free format.
This function tries as hard as it can to interpret the given string as date
*/
const char* ParseDateTime(const wxString& datetime,
wxString::const_iterator* end = NULL);
+ /**
+
+ */
const char* ParseDateTime(const char* datetime);
+ /**
+
+ */
const wchar_t* ParseDateTime(const wchar_t* datetime);
- //@}
- //@{
/**
This function parses the string @a date according to the given
@e format. The system @c strptime(3) function is used whenever available,
the character which stopped the scan.
*/
const char* ParseFormat(const wxString& date,
- const wxString& format = wxDefaultDateTimeFormat,
- const wxDateTime& dateDef = wxDefaultDateTime,
- wxString::const_iterator* end = NULL);
+ const wxString& format = wxDefaultDateTimeFormat,
+ const wxDateTime& dateDef = wxDefaultDateTime,
+ wxString::const_iterator* end = NULL);
+ /**
+
+ */
const char* ParseFormat(const char* date,
- const wxString& format = wxDefaultDateTimeFormat,
- const wxDateTime& dateDef = wxDefaultDateTime);
+ const wxString& format = wxDefaultDateTimeFormat,
+ const wxDateTime& dateDef = wxDefaultDateTime);
+ /**
+
+ */
const wchar_t* ParseFormat(const wchar_t* date,
- const wxString& format = wxDefaultDateTimeFormat,
- const wxDateTime& dateDef = wxDefaultDateTime);
- //@}
+ const wxString& format = wxDefaultDateTimeFormat,
+ const wxDateTime& dateDef = wxDefaultDateTime);
/**
This function parses the string containing the date and time in ISO 8601
*/
bool ParseISOTime(const wxString& date);
- //@{
/**
Parses the string @a date looking for a date formatted according to the RFC
822 in it. The exact description of this format may, of course, be found in
*/
const char* ParseRfc822Date(const wxString& date,
wxString::const_iterator* end = NULL);
+ /**
+ This function parses the string @a date according to the given..
+ */
const char* ParseRfc822Date(const char* date);
+ /**
+ This function parses the string @a date according to the given..
+ */
const wchar_t* ParseRfc822Date(const wchar_t* date);
- //@}
- //@{
/**
This functions is like ParseDateTime(), but
only allows the time to be specified in the input string.
the character which stopped the scan.
*/
const char* ParseTime(const wxString& time,
- wxString::const_iterator* end = NULL);
- const char* ParseTime(const char* time);
- const wchar_t* ParseTime(const wchar_t* time);
- //@}
-
+ wxString::const_iterator* end = NULL);
/**
- These functions convert wxDateTime objects to and from text. The
- conversions to text are mostly trivial: you can either do it using the default
- date and time representations for the current locale (
- FormatDate() and
- wxDateTime::FormatTime), using the international standard
- representation defined by ISO 8601 (
- FormatISODate(),
- FormatISOTime() and
- wxDateTime::FormatISOCombined) or by specifying any
- format at all and using Format() directly.
- The conversions from text are more interesting, as there are much more
- possibilities to care about. The simplest cases can be taken care of with
- ParseFormat() which can parse any date in the
- given (rigid) format. wxDateTime::ParseRfc822Date is
- another function for parsing dates in predefined format -- the one of RFC 822
- which (still...) defines the format of email messages on the Internet. This
- format can not be described with @c strptime(3)-like format strings used by
- Format(), hence the need for a separate function.
- But the most interesting functions are
- ParseTime(),
- ParseDate() and
- ParseDateTime(). They try to parse the date
- ans time (or only one of them) in 'free' format, i.e. allow them to be
- specified in any of possible ways. These functions will usually be used to
- parse the (interactive) user input which is not bound to be in any predefined
- format. As an example, ParseDateTime() can
- parse the strings such as @c "tomorrow", @c "March first" and even
- @c "next Sunday".
- Finally notice that each of the parsing functions is available in several
- overloads: if the input string is a narrow (@c char *) string, then a
- narrow pointer is returned. If the input string is a wide string, a wide char
- pointer is returned. Finally, if the input parameter is a wxString, a narrow
- char pointer is also returned for backwards compatibility but there is also an
- additional argument of wxString::const_iterator type in which, if it is not
- @NULL, an iterator pointing to the end of the scanned string part is returned.
- ParseFormat()
-
- ParseDateTime()
-
- ParseDate()
-
- ParseTime()
-
- ParseISODate()
-
- ParseISOTime()
-
- ParseISOCombined()
-
- wxDateTime::ParseRfc822Date
-
- Format()
-
- FormatDate()
-
- FormatTime()
-
- FormatISOCombined()
- FormatISODate()
-
- FormatISOTime()
*/
-
-
+ const char* ParseTime(const char* time);
/**
- Reset time to midnight (00:00:00) without changing the date.
- */
- wxDateTime& ResetTime();
- /**
- Sets the date and time from the parameters.
*/
- wxDateTime Set(wxDateTime_t day, Month month = Inv_Month,
- int year = Inv_Year,
- wxDateTime_t hour = 0,
- wxDateTime_t minute = 0,
- wxDateTime_t second = 0,
- wxDateTime_t millisec = 0);
+ const wchar_t* ParseTime(const wchar_t* time);
+
+ //@}
- /**
- Sets the country to use by default. This setting influences the DST
- calculations, date formatting and other things.
- The possible values for @a country parameter are enumerated in
- @ref overview_wxdatetime "wxDateTime constants section".
- @see GetCountry()
- */
- static void SetCountry(Country country);
/**
- Sets the day without changing other date components.
- */
- wxDateTime& SetDay(short unsigned int);
+ @name Calendar Calculations
- /**
- Sets the date from the date and time in
- DOS
- format.
- */
- wxDateTime Set(unsigned long ddt);
+ The functions in this section perform the basic calendar calculations,
+ mostly related to the week days. They allow to find the given week day
+ in the week with given number (either in the month or in the year) and
+ so on.
- /**
- Sets the hour without changing other date components.
+ None of the functions in this section modify the time part of the
+ wxDateTime, they only work with the date part of it.
+
+ <!--
+ GetWeekDay()
+ GetYearDay()
+ -->
*/
- wxDateTime& SetHour(short unsigned int);
+ //@{
/**
- Sets the millisecond without changing other date components.
+ Returns the copy of this object to which
+ SetToLastMonthDay() was applied.
*/
- wxDateTime& SetMillisecond(short unsigned int);
+ wxDateTime GetLastMonthDay(Month month = Inv_Month,
+ int year = Inv_Year) const;
/**
- Sets the minute without changing other date components.
+ Returns the copy of this object to which SetToLastWeekDay() was
+ applied.
*/
- wxDateTime& SetMinute(short unsigned int);
+ wxDateTime GetLastWeekDay(WeekDay weekday,
+ Month month = Inv_Month,
+ int year = Inv_Year);
/**
- Sets the month without changing other date components.
+ Returns the copy of this object to which SetToNextWeekDay() was
+ applied.
*/
- wxDateTime& SetMonth(Month month);
+ wxDateTime GetNextWeekDay(WeekDay weekday) const;
/**
- Sets the second without changing other date components.
+ Returns the copy of this object to which SetToPrevWeekDay() was
+ applied.
*/
- wxDateTime& SetSecond(short unsigned int);
+ wxDateTime GetPrevWeekDay(WeekDay weekday) const;
/**
- Sets the date and time of to the current values. Same as assigning the result
- of Now() to this object.
+ Returns the copy of this object to which SetToWeekDayInSameWeek() was
+ applied.
*/
- wxDateTime& SetToCurrent();
+ wxDateTime GetWeekDayInSameWeek(WeekDay weekday,
+ WeekFlags flags = Monday_First) const;
/**
- Sets the date to the last day in the specified month (the current one by
- default).
- Returns the reference to the modified object itself.
+ Sets the date to the last day in the specified month (the current one
+ by default).
+
+ @returns The reference to the modified object itself.
*/
wxDateTime SetToLastMonthDay(Month month = Inv_Month,
int year = Inv_Year);
/**
Sets the date so that it will be the first @a weekday following the current
date.
- Returns the reference to the modified object itself.
+
+ @returns The reference to the modified object itself.
*/
wxDateTime& SetToNextWeekDay(WeekDay weekday);
/**
Sets the date so that it will be the last @a weekday before the current
date.
- Returns the reference to the modified object itself.
+
+ @returns The reference to the modified object itself.
*/
wxDateTime& SetToPrevWeekDay(WeekDay weekday);
year (the current month and year are used by default). The parameter @e n
may be either positive (counting from the beginning of the month) or negative
(counting from the end of it).
- For example, @c SetToWeekDay(2, wxDateTime::Wed) will set the date to the
+
+ For example, SetToWeekDay(2, wxDateTime::Wed) will set the date to the
second Wednesday in the current month and
- @c SetToWeekDay(-1, wxDateTime::Sun) -- to the last Sunday in it.
- Returns @true if the date was modified successfully, @false
- otherwise meaning that the specified date doesn't exist.
+ SetToWeekDay(-1, wxDateTime::Sun) will set the date to the last Sunday
+ in the current month.
+
+ @returns @true if the date was modified successfully, @false otherwise
+ meaning that the specified date doesn't exist.
*/
bool SetToWeekDay(WeekDay weekday, int n = 1,
- Month month = Inv_Month,
- int year = Inv_Year);
+ Month month = Inv_Month, int year = Inv_Year);
/**
- Adjusts the date so that it will still lie in the same week as before, but its
- week day will be the given one.
- Returns the reference to the modified object itself.
+ Adjusts the date so that it will still lie in the same week as before,
+ but its week day will be the given one.
+
+ @returns The reference to the modified object itself.
*/
wxDateTime SetToWeekDayInSameWeek(WeekDay weekday,
WeekFlags flags = Monday_First);
- /**
- Set the date to the given @a weekday in the week number @a numWeek of the
- given @a year . The number should be in range 1...53.
- Note that the returned date may be in a different year than the one passed to
- this function because both the week 1 and week 52 or 53 (for leap years)
- contain days from different years. See
- GetWeekOfYear() for the explanation of how the
- year weeks are counted.
- */
- static wxDateTime SetToWeekOfYear(int year, wxDateTime_t numWeek,
- WeekDay weekday = Mon);
-
/**
Sets the date to the day number @a yday in the same year (i.e., unlike the
other functions, this one does not use the current year). The day number
*/
wxDateTime& SetToYearDay(short unsigned int);
+ //@}
+
+
+
/**
- Sets the year without changing other date components.
+ @name Astronomical/Historical Functions
+
+ Some degree of support for the date units used in astronomy and/or
+ history is provided. You can construct a wxDateTime object from a
+ JDN and you may also get its JDN, MJD or Rata Die number from it.
+
+ <!--
+ wxDateTime(double jdn)
+ Set(double jdn)
+ -->
*/
- wxDateTime& SetYear(int year);
+ //@{
+
+ /**
+ Synonym for GetJulianDayNumber().
+ */
+ double GetJDN() const;
+
+ /**
+ Returns the @ref setjdn() JDN corresponding to this date. Beware
+ of rounding errors!
+
+ @see GetModifiedJulianDayNumber()
+ */
+ double GetJulianDayNumber() const;
+
+ /**
+ Synonym for GetModifiedJulianDayNumber().
+ */
+ double GetMJD() const;
+
+ /**
+ Returns the @e Modified Julian Day Number (MJD) which is, by definition,
+ equal to JDN - 2400000.5. The MJDs are simpler to work with as the integral
+ MJDs correspond to midnights of the dates in the Gregorian calendar and not th
+ noons like JDN. The MJD 0 is Nov 17, 1858.
+ */
+ double GetModifiedJulianDayNumber() const;
+
+ /**
+ Return the @e Rata Die number of this date.
+ By definition, the Rata Die number is a date specified as the number of days
+ relative to a base date of December 31 of the year 0. Thus January 1 of the
+ year 1 is Rata Die day 1.
+ */
+ double GetRataDie() const;
+
+ //@}
+
+
+
+ /**
+ @name Time Zone and DST Support
+
+ Please see the @ref overview_datetime_timezones "time zone overview"
+ for more information about time zones. Normally, these functions should
+ be rarely used.
+
+ See also GetBeginDST() and GetEndDST().
+ */
+ //@{
+
+ /**
+ Transform the date from the given time zone to the local one. If
+ @a noDST is @true, no DST adjustments will be made.
+
+ @returns The date in the local time zone.
+ */
+ wxDateTime FromTimezone(const TimeZone& tz, bool noDST = false) const;
+
+ /**
+ Returns @true if the DST is applied for this date in the given country.
+ */
+ int IsDST(Country country = Country_Default) const;
+
+ /**
+ Same as FromTimezone() but modifies the object in place.
+ */
+ wxDateTime MakeFromTimezone(const TimeZone& tz, bool noDST = false);
+
+ /**
+ Modifies the object in place to represent the date in another time
+ zone. If @a noDST is @true, no DST adjustments will be made.
+ */
+ wxDateTime MakeTimezone(const TimeZone& tz, bool noDST = false);
+
+ /**
+ This is the same as calling MakeTimezone() with the argument @c GMT0.
+ */
+ wxDateTime& MakeUTC(bool noDST = false);
/**
- For convenience, all static functions are collected here. These functions
- either set or return the static variables of wxDateSpan (the country), return
- the current moment, year, month or number of days in it, or do some general
- calendar-related actions.
- Please note that although several function accept an extra @e Calendar
- parameter, it is currently ignored as only the Gregorian calendar is
- supported. Future versions will support other calendars.
+ Transform the date to the given time zone. If @a noDST is @true, no DST
+ adjustments will be made.
- SetCountry()
+ @returns The date in the new time zone.
+ */
+ wxDateTime ToTimezone(const TimeZone& tz, bool noDST = false) const;
+
+ /**
+ This is the same as calling ToTimezone() with the argument @c GMT0.
+ */
+ wxDateTime ToUTC(bool noDST = false) const;
- GetCountry()
+ //@}
- IsWestEuropeanCountry()
- GetCurrentYear()
- ConvertYearToBC()
- GetCurrentMonth()
- IsLeapYear()
+ /**
+ Converts the year in absolute notation (i.e. a number which can be
+ negative, positive or zero) to the year in BC/AD notation. For the
+ positive years, nothing is done, but the year 0 is year 1 BC and so for
+ other years there is a difference of 1.
- @ref getcenturystatic() GetCentury
+ This function should be used like this:
- GetNumberOfDays()
+ @code
+ wxDateTime dt(...);
+ int y = dt.GetYear();
+ printf("The year is %d%s", wxDateTime::ConvertYearToBC(y), y > 0 ? "AD" : "BC");
+ @endcode
+ */
+ static int ConvertYearToBC(int year);
- GetNumberOfDays()
+ /**
+ Returns the translations of the strings @c AM and @c PM used for time
+ formatting for the current locale. Either of the pointers may be @NULL
+ if the corresponding value is not needed.
+ */
+ static void GetAmPmStrings(wxString* am, wxString* pm);
- GetMonthName()
+ /**
+ Get the beginning of DST for the given country in the given year
+ (current one by default). This function suffers from limitations
+ described in the @ref overview_datetime_dst "DST overview".
- GetWeekDayName()
+ @see GetEndDST()
+ */
+ static wxDateTime GetBeginDST(int year = Inv_Year,
+ Country country = Country_Default);
- GetAmPmStrings()
+ /**
+ Returns the end of DST for the given country in the given year (current
+ one by default).
- IsDSTApplicable()
+ @see GetBeginDST()
+ */
+ static wxDateTime GetEndDST(int year = Inv_Year,
+ Country country = Country_Default);
- GetBeginDST()
+ /**
+ Get the current century, i.e. first two digits of the year, in given
+ calendar (only Gregorian is currently supported).
+ */
+ static int GetCentury(int year);
- GetEndDST()
+ /**
+ Returns the current default country. The default country is used for
+ DST calculations, for example.
- Now()
+ @see SetCountry()
+ */
+ static Country GetCountry();
- UNow()
+ /**
+ Get the current month in given calendar (only Gregorian is currently
+ supported).
+ */
+ static Month GetCurrentMonth(Calendar cal = Gregorian);
- Today()
+ /**
+ Get the current year in given calendar (only Gregorian is currently
+ supported).
*/
+ static int GetCurrentYear(Calendar cal = Gregorian);
+
+ /**
+ Gets the full (default) or abbreviated (specify @c Name_Abbr name of
+ the given month.
+ @see GetWeekDayName()
+ */
+ static wxString GetMonthName(Month month, NameFlags flags = Name_Full);
/**
- Subtracts another date from this one and returns the difference between them
- as wxTimeSpan.
+ Returns the number of days in the given year. The only supported value
+ for @a cal currently is @c Gregorian.
+
+ @beginWxPythonOnly
+ This method is named "GetNumberOfDaysInYear" in wxPython.
+ @endWxPythonOnly
*/
- wxTimeSpan Subtract(const wxDateTime& dt) const;
+ static wxDateTime_t GetNumberOfDays(int year, Calendar cal = Gregorian);
/**
- Please see the @ref overview_tdatetimezones "time zone overview" for more
- information about time zones. Normally, these functions should be rarely used.
- FromTimezone()
+ Returns the number of days in the given month of the given year. The
+ only supported value for @a cal currently is @c Gregorian.
+
+ @beginWxPythonOnly
+ This method is named "GetNumberOfDaysInMonth" in wxPython.
+ @endWxPythonOnly
+ */
+ static wxDateTime_t GetNumberOfDays(Month month,
+ int year = Inv_Year,
+ Calendar cal = Gregorian);
- ToTimezone()
+ /**
+ Returns the current time.
+ */
+ static time_t GetTimeNow();
- MakeTimezone()
+ /**
+ Returns the current time broken down using the buffer whose adress is
+ passed to the function with @a tm to store the result.
+ */
+ static struct tm* GetTmNow(struct tm *tm);
- MakeFromTimezone()
+ /**
+ Returns the current time broken down. Note that this function returns a
+ pointer to a static buffer that's reused by calls to this function and
+ certain C library functions (e.g. localtime). If there is any chance
+ your code might be used in a multi-threaded application, you really
+ should use GetTmNow(struct tm *) instead.
+ */
+ static struct tm* GetTmNow();
- ToUTC()
+ /**
+ Gets the full (default) or abbreviated (specify @c Name_Abbr) name of
+ the given week day.
- MakeUTC()
+ @see GetMonthName()
+ */
+ static wxString GetWeekDayName(WeekDay weekday,
+ NameFlags flags = Name_Full);
- GetBeginDST()
+ /**
+ Returns @true if DST was used n the given year (the current one by
+ default) in the given country.
+ */
+ static bool IsDSTApplicable(int year = Inv_Year,
+ Country country = Country_Default);
- GetEndDST()
+ /**
+ Returns @true if the @a year is a leap one in the specified calendar.
+ This functions supports Gregorian and Julian calendars.
+ */
+ static bool IsLeapYear(int year = Inv_Year,
+ Calendar cal = Gregorian);
- IsDST()
+ /**
+ This function returns @true if the specified (or default) country is
+ one of Western European ones. It is used internally by wxDateTime to
+ determine the DST convention and date and time formatting rules.
*/
+ static bool IsWestEuropeanCountry(Country country = Country_Default);
+
+ /**
+ Returns the object corresponding to the current time.
+
+ Example:
+ @code
+ wxDateTime now = wxDateTime::Now();
+ printf("Current time in Paris:\t%s\n", now.Format("%c", wxDateTime::CET).c_str());
+ @endcode
+
+ @note This function is accurate up to seconds. UNow() should be used
+ for better precision, but it is less efficient and might not be
+ available on all platforms.
+
+ @see Today()
+ */
+ static wxDateTime Now();
/**
- Transform the date to the given time zone. If @a noDST is @true, no
- DST adjustments will be made.
- Returns the date in the new time zone.
+ Sets the country to use by default. This setting influences the DST
+ calculations, date formatting and other things.
+
+ The possible values for @a country parameter are enumerated in the
+ @ref datetime_constants section.
+
+ @see GetCountry()
*/
- wxDateTime ToTimezone(const TimeZone& tz, bool noDST = false) const;
+ static void SetCountry(Country country);
/**
- This is the same as calling ToTimezone() with
- the argument @c GMT0.
+ Set the date to the given @a weekday in the week number @a numWeek of the
+ given @a year . The number should be in range 1...53.
+ Note that the returned date may be in a different year than the one passed to
+ this function because both the week 1 and week 52 or 53 (for leap years)
+ contain days from different years. See
+ GetWeekOfYear() for the explanation of how the
+ year weeks are counted.
*/
- wxDateTime ToUTC(bool noDST = false) const;
+ static wxDateTime SetToWeekOfYear(int year, wxDateTime_t numWeek,
+ WeekDay weekday = Mon);
/**
- Returns the object corresponding to the midnight of the current day (i.e. the
- same as Now(), but the time part is set to 0).
+ Returns the object corresponding to the midnight of the current day
+ (i.e. the same as Now(), but the time part is set to 0).
@see Now()
*/
/**
Returns the object corresponding to the current time including the
- milliseconds if a function to get time with such precision is available on the
- current platform (supported under most Unices and Win32).
+ milliseconds if a function to get time with such precision is available
+ on the current platform (supported under most Unices and Win32).
@see Now()
*/
static wxDateTime UNow();
+
+
+
+// Uncategorized Functions:
+
+
+
+
+ /**
+ Returns the object having the same date component as this one but time of
+ 00:00:00.
+
+ @wxsince{2.8.2}
+
+ @see ResetTime()
+ */
+ wxDateTime GetDateOnly() const;
+
/**
- Same as @ref settm() Set.
+ Returns broken down representation of the date and time.
*/
- wxDateTime operator(const struct tm& tm);
+ Tm GetTm(const TimeZone& tz = Local) const;
};
/**
@library{wxbase}
@category{data}
- @see @ref overview_wxdatetimeoverview "Date classes overview", wxDateTime
+ @see @ref overview_datetime, wxDateTime
*/
class wxDateSpan
{
@library{wxbase}
@category{data}
- @see @ref overview_wxdatetimeoverview "Date classes overview", wxDateTime
+ @see @ref overview_datetime, wxDateTime
*/
class wxTimeSpan
{
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