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API Reference

class: GDateTimeCtors

[716:14] static extends: object

Alternate constructors for GDateTime. Usage: GDateTimeCtors.<name>(...). The primary constructor lives directly on GDateTime.

Methods

  • newFromIso8601 (string text, object default_tz)

    Creates a #GDateTime corresponding to the given ISO 8601 formatted string @text. ISO 8601 strings of the form <date><sep><time><tz> are supported, with some extensions from RFC 3339 as mentioned below. Note that as #GDateTime "is oblivious to leap seconds", leap seconds information in an ISO-8601 string will be ignored, so a 23:59:60 time would be parsed as 23:59:59. <sep> is the separator and can be either 'T', 't' or ' '. The latter two separators are an extension from RFC 3339. <date> is in the form: - YYYY-MM-DD - Year/month/day, e.g. 2016-08-24. - YYYYMMDD - Same as above without dividers. - YYYY-DDD - Ordinal day where DDD is from 001 to 366, e.g. 2016-237. - YYYYDDD - Same as above without dividers. - YYYY-Www-D - Week day where ww is from 01 to 52 and D from 1-7, e.g. 2016-W34-3. - YYYYWwwD - Same as above without dividers. <time> is in the form: - hh:mm:ss(.sss) - Hours, minutes, seconds (subseconds), e.g. 22:10:42.123. - hhmmss(.sss) - Same as above without dividers. <tz> is an optional timezone suffix of the form: - Z - UTC. - +hh:mm or -hh:mm - Offset from UTC in hours and minutes, e.g. +12:00. - +hh or -hh - Offset from UTC in hours, e.g. +12. If the timezone is not provided in @text it must be provided in @default_tz (this field is otherwise ignored). This call can fail (returning %NULL) if @text is not a valid ISO 8601 formatted string. You should release the return value by calling g_date_time_unref() when you are done with it.

    • @p text is an ISO 8601 formatted time string..
    • @p default_tz is a #GTimeZone to use if the text doesn't contain a timezone, or %NULL..
    • @r A new GDateTime.
  • newFromTimevalLocal (object tv)

    Creates a #GDateTime corresponding to the given #GTimeVal @tv in the local time zone. The time contained in a #GTimeVal is always stored in the form of seconds elapsed since 1970-01-01 00:00:00 UTC, regardless of the local time offset. This call can fail (returning %NULL) if @tv represents a time outside of the supported range of #GDateTime. You should release the return value by calling g_date_time_unref() when you are done with it.

    • @p tv is a #GTimeVal.
    • @r A new GDateTime.
  • newFromTimevalUtc (object tv)

    Creates a #GDateTime corresponding to the given #GTimeVal @tv in UTC. The time contained in a #GTimeVal is always stored in the form of seconds elapsed since 1970-01-01 00:00:00 UTC. This call can fail (returning %NULL) if @tv represents a time outside of the supported range of #GDateTime. You should release the return value by calling g_date_time_unref() when you are done with it.

    • @p tv is a #GTimeVal.
    • @r A new GDateTime.
  • newFromUnixLocal (int t)

    Creates a #GDateTime corresponding to the given Unix time @t in the local time zone. Unix time is the number of seconds that have elapsed since 1970-01-01 00:00:00 UTC, regardless of the local time offset. This call can fail (returning %NULL) if @t represents a time outside of the supported range of #GDateTime. You should release the return value by calling g_date_time_unref() when you are done with it.

    • @p t is the Unix time.
    • @r A new GDateTime.
  • newFromUnixLocalUsec (int usecs)

    Creates a [struct@GLib.DateTime] corresponding to the given Unix time @t in the local time zone. Unix time is the number of microseconds that have elapsed since 1970-01-01 00:00:00 UTC, regardless of the local time offset. This call can fail (returning NULL) if @t represents a time outside of the supported range of #GDateTime. You should release the return value by calling [method@GLib.DateTime.unref] when you are done with it.

    • @p usecs is the Unix time in microseconds.
    • @r A new GDateTime.
  • newFromUnixUtc (int t)

    Creates a #GDateTime corresponding to the given Unix time @t in UTC. Unix time is the number of seconds that have elapsed since 1970-01-01 00:00:00 UTC. This call can fail (returning %NULL) if @t represents a time outside of the supported range of #GDateTime. You should release the return value by calling g_date_time_unref() when you are done with it.

    • @p t is the Unix time.
    • @r A new GDateTime.
  • newFromUnixUtcUsec (int usecs)

    Creates a [struct@GLib.DateTime] corresponding to the given Unix time @t in UTC. Unix time is the number of microseconds that have elapsed since 1970-01-01 00:00:00 UTC. This call can fail (returning NULL) if @t represents a time outside of the supported range of #GDateTime. You should release the return value by calling [method@GLib.DateTime.unref] when you are done with it.

    • @p usecs is the Unix time in microseconds.
    • @r A new GDateTime.
  • newLocal (int year, int month, int day, int hour, int minute, double seconds)

    Creates a new #GDateTime corresponding to the given date and time in the local time zone. This call is equivalent to calling g_date_time_new() with the time zone returned by g_time_zone_new_local().

    • @p year is the year component of the date.
    • @p month is the month component of the date.
    • @p day is the day component of the date.
    • @p hour is the hour component of the date.
    • @p minute is the minute component of the date.
    • @p seconds is the number of seconds past the minute.
    • @r A new GDateTime.
  • newNow (object tz)

    Creates a #GDateTime corresponding to this exact instant in the given time zone @tz. The time is as accurate as the system allows, to a maximum accuracy of 1 microsecond. This function will always succeed unless GLib is still being used after the year 9999. You should release the return value by calling g_date_time_unref() when you are done with it.

    • @p tz is a #GTimeZone.
    • @r A new GDateTime.
  • newNowLocal ()

    Creates a #GDateTime corresponding to this exact instant in the local time zone. This is equivalent to calling g_date_time_new_now() with the time zone returned by g_time_zone_new_local().

    • @r A new GDateTime.
  • newNowUtc ()

    Creates a #GDateTime corresponding to this exact instant in UTC. This is equivalent to calling g_date_time_new_now() with the time zone returned by g_time_zone_new_utc().

    • @r A new GDateTime.
  • newUtc (int year, int month, int day, int hour, int minute, double seconds)

    Creates a new #GDateTime corresponding to the given date and time in UTC. This call is equivalent to calling g_date_time_new() with the time zone returned by g_time_zone_new_utc().

    • @p year is the year component of the date.
    • @p month is the month component of the date.
    • @p day is the day component of the date.
    • @p hour is the hour component of the date.
    • @p minute is the minute component of the date.
    • @p seconds is the number of seconds past the minute.
    • @r A new GDateTime.

class: GDateTime

[29:7] extends: object

GDateTime is a structure that combines a Gregorian date and time into a single structure. GDateTime provides many conversion and methods to manipulate dates and times. Time precision is provided down to microseconds and the time can range (proleptically) from 0001-01-01 00:00:00 to 9999-12-31 23:59:59.999999. GDateTime follows POSIX time in the sense that it is oblivious to leap seconds. GDateTime is an immutable object; once it has been created it cannot be modified further. All modifiers will create a new GDateTime. Nearly all such functions can fail due to the date or time going out of range, in which case %NULL will be returned. GDateTime is reference counted: the reference count is increased by calling [method@GLib.DateTime.ref] and decreased by calling [method@GLib.DateTime.unref]. When the reference count drops to 0, the resources allocated by the GDateTime structure are released. Many parts of the API may produce non-obvious results. As an example, adding two months to January 31st will yield March 31st whereas adding one month and then one month again will yield either March 28th or March 29th. Also note that adding 24 hours is not always the same as adding one day (since days containing daylight savings time transitions are either 23 or 25 hours in length).

Members

  • handleObj
  • lib
  • retainedCallbacks
  • signalHandlerNames
  • signalSetterHandlers

Methods

  • GDateTime (tz = null, year = null, month = null, day = null, hour = null, minute = null, seconds = null)

    Creates a new #GDateTime corresponding to the given date and time in the time zone @tz. The @year must be between 1 and 9999, @month between 1 and 12 and @day between 1 and 28, 29, 30 or 31 depending on the month and the year. @hour must be between 0 and 23 and @minute must be between 0 and 59. @seconds must be at least 0.0 and must be strictly less than 60.0. It will be rounded down to the nearest microsecond. If the given time is not representable in the given time zone (for example, 02:30 on March 14th 2010 in Toronto, due to daylight savings time) then the time will be rounded up to the nearest existing time (in this case, 03:00). If this matters to you then you should verify the return value for containing the same as the numbers you gave. In the case that the given time is ambiguous in the given time zone (for example, 01:30 on November 7th 2010 in Toronto, due to daylight savings time) then the time falling within standard (ie: non-daylight) time is taken. It not considered a programmer error for the values to this function to be out of range, but in the case that they are, the function will return %NULL. You should release the return value by calling g_date_time_unref() when you are done with it.

    • @p tz is a #GTimeZone.
    • @p year is the year component of the date.
    • @p month is the month component of the date.
    • @p day is the day component of the date.
    • @p hour is the hour component of the date.
    • @p minute is the minute component of the date.
    • @p seconds is the number of seconds past the minute.
  • toNativeHandle (Source)

    Normalizes a constructor argument into a raw pointer carrier. Accepts a raw NativeHandle, a raw NativeBuffer returned from fn.call(...), another generated wrapper exposing handle(), or null. Returns null when the argument carries no pointer.

    • @p Source is the raw handle, raw buffer, wrapper, or null.
    • @r A raw pointer carrier or null when no pointer is present.
  • getLib ()

    Returns the opened native library for this generated wrapper.

    • @r The opened native library.
  • handle ()

    Returns the wrapped NativeHandle.

    • @r The wrapped NativeHandle.
  • isNull ()

    Returns true when the wrapped handle is null.

    • @r A bool.
  • describe ()

    Returns a small string for debugging generated wrappers.

    • @r A string.
  • add_days (int days)

    Creates a copy of @datetime and adds the specified number of days to the copy. Add negative values to subtract days.

    • @p days is the number of days.
    • @r the newly created #GDateTime which should be freed with g_date_time_unref(), or %NULL.
  • add_full (int years, int months, int days, int hours, int minutes, double seconds)

    Creates a new #GDateTime adding the specified values to the current date and time in @datetime. Add negative values to subtract.

    • @p years is the number of years to add.
    • @p months is the number of months to add.
    • @p days is the number of days to add.
    • @p hours is the number of hours to add.
    • @p minutes is the number of minutes to add.
    • @p seconds is the number of seconds to add.
    • @r the newly created #GDateTime which should be freed with g_date_time_unref(), or %NULL.
  • add_hours (int hours)

    Creates a copy of @datetime and adds the specified number of hours. Add negative values to subtract hours.

    • @p hours is the number of hours to add.
    • @r the newly created #GDateTime which should be freed with g_date_time_unref(), or %NULL.
  • add_minutes (int minutes)

    Creates a copy of @datetime adding the specified number of minutes. Add negative values to subtract minutes.

    • @p minutes is the number of minutes to add.
    • @r the newly created #GDateTime which should be freed with g_date_time_unref(), or %NULL.
  • add_months (int months)

    Creates a copy of @datetime and adds the specified number of months to the copy. Add negative values to subtract months. The day of the month of the resulting #GDateTime is clamped to the number of days in the updated calendar month. For example, if adding 1 month to 31st January 2018, the result would be 28th February 2018. In 2020 (a leap year), the result would be 29th February.

    • @p months is the number of months.
    • @r the newly created #GDateTime which should be freed with g_date_time_unref(), or %NULL.
  • add_seconds (double seconds)

    Creates a copy of @datetime and adds the specified number of seconds. Add negative values to subtract seconds.

    • @p seconds is the number of seconds to add.
    • @r the newly created #GDateTime which should be freed with g_date_time_unref(), or %NULL.
  • add_weeks (int weeks)

    Creates a copy of @datetime and adds the specified number of weeks to the copy. Add negative values to subtract weeks.

    • @p weeks is the number of weeks.
    • @r the newly created #GDateTime which should be freed with g_date_time_unref(), or %NULL.
  • add_years (int years)

    Creates a copy of @datetime and adds the specified number of years to the copy. Add negative values to subtract years. As with g_date_time_add_months(), if the resulting date would be 29th February on a non-leap year, the day will be clamped to 28th February.

    • @p years is the number of years.
    • @r the newly created #GDateTime which should be freed with g_date_time_unref(), or %NULL.
  • compare (object dt2)

    A comparison function for #GDateTimes that is suitable as a #GCompareFunc. Both #GDateTimes must be non-%NULL.

    • @p dt2 is second #GDateTime to compare.
    • @r -1, 0 or 1 if @dt1 is less than, equal to or greater than @dt2..
  • equal (object dt2)

    Checks to see if @dt1 and @dt2 are equal. Equal here means that they represent the same moment after converting them to the same time zone.

    • @p dt2 is a #GDateTime.
    • @r %TRUE if @dt1 and @dt2 are equal.
  • format (string format)

    Creates a newly allocated string representing the requested @format. The format strings understood by this function are a subset of the strftime() format language as specified by C99. The %D, %U and %W conversions are not supported, nor is the E modifier. The GNU extensions %k, %l, %s and %P are supported, however, as are the 0, _ and - modifiers. The Python extension %f is also supported. In contrast to strftime(), this function always produces a UTF-8 string, regardless of the current locale. Note that the rendering of many formats is locale-dependent and may not match the strftime() output exactly. The following format specifiers are supported: - %a: the abbreviated weekday name according to the current locale - %A: the full weekday name according to the current locale - %b: the abbreviated month name according to the current locale - %B: the full month name according to the current locale - %c: the preferred date and time representation for the current locale - %C: the century number (year/100) as a 2-digit integer (00-99) - %d: the day of the month as a decimal number (range 01 to 31) - %e: the day of the month as a decimal number (range 1 to 31); single digits are preceded by a figure space (U+2007) - %F: equivalent to %Y-%m-%d (the ISO 8601 date format) - %g: the last two digits of the ISO 8601 week-based year as a decimal number (00-99). This works well with %V and %u. - %G: the ISO 8601 week-based year as a decimal number. This works well with %V and %u. - %h: equivalent to %b - %H: the hour as a decimal number using a 24-hour clock (range 00 to 23) - %I: the hour as a decimal number using a 12-hour clock (range 01 to 12) - %j: the day of the year as a decimal number (range 001 to 366) - %k: the hour (24-hour clock) as a decimal number (range 0 to 23); single digits are preceded by a figure space (U+2007) - %l: the hour (12-hour clock) as a decimal number (range 1 to 12); single digits are preceded by a figure space (U+2007) - %m: the month as a decimal number (range 01 to 12) - %M: the minute as a decimal number (range 00 to 59) - %f: the microsecond as a decimal number (range 000000 to 999999) - %p: either ‘AM’ or ‘PM’ according to the given time value, or the corresponding strings for the current locale. Noon is treated as ‘PM’ and midnight as ‘AM’. Use of this format specifier is discouraged, as many locales have no concept of AM/PM formatting. Use %c or %X instead. - %P: like %p but lowercase: ‘am’ or ‘pm’ or a corresponding string for the current locale. Use of this format specifier is discouraged, as many locales have no concept of AM/PM formatting. Use %c or %X instead. - %r: the time in a.m. or p.m. notation. Use of this format specifier is discouraged, as many locales have no concept of AM/PM formatting. Use %c or %X instead. - %R: the time in 24-hour notation (%H:%M) - %s: the number of seconds since the Epoch, that is, since 1970-01-01 00:00:00 UTC - %S: the second as a decimal number (range 00 to 60) - %t: a tab character - %T: the time in 24-hour notation with seconds (%H:%M:%S) - %u: the ISO 8601 standard day of the week as a decimal, range 1 to 7, Monday being 1. This works well with %G and %V. - %V: the ISO 8601 standard week number of the current year as a decimal number, range 01 to 53, where week 1 is the first week that has at least 4 days in the new year. See g_date_time_get_week_of_year(). This works well with %G and %u. - %w: the day of the week as a decimal, range 0 to 6, Sunday being 0. This is not the ISO 8601 standard format — use %u instead. - %x: the preferred date representation for the current locale without the time - %X: the preferred time representation for the current locale without the date - %y: the year as a decimal number without the century - %Y: the year as a decimal number including the century - %z: the time zone as an offset from UTC (+hhmm) - %:z: the time zone as an offset from UTC (+hh:mm). This is a gnulib strftime() extension. Since: 2.38 - %::z: the time zone as an offset from UTC (+hh:mm:ss). This is a gnulib strftime() extension. Since: 2.38 - %:::z: the time zone as an offset from UTC, with : to necessary precision (e.g., -04, +05:30). This is a gnulib strftime() extension. Since: 2.38 - %Z: the time zone or name or abbreviation - %%: a literal % character Some conversion specifications can be modified by preceding the conversion specifier by one or more modifier characters. The following modifiers are supported for many of the numeric conversions: - O: Use alternative numeric symbols, if the current locale supports those. - _: Pad a numeric result with spaces. This overrides the default padding for the specifier. - -: Do not pad a numeric result. This overrides the default padding for the specifier. - 0: Pad a numeric result with zeros. This overrides the default padding for the specifier. The following modifiers are supported for many of the alphabetic conversions: - ^: Use upper case if possible. This is a gnulib strftime() extension. Since: 2.80 - #: Use opposite case if possible. This is a gnulib strftime() extension. Since: 2.80 Additionally, when O is used with B, b, or h, it produces the alternative form of a month name. The alternative form should be used when the month name is used without a day number (e.g., standalone). It is required in some languages (Baltic, Slavic, Greek, and more) due to their grammatical rules. For other languages there is no difference. %OB is a GNU and BSD strftime() extension expected to be added to the future POSIX specification, %Ob and %Oh are GNU strftime() extensions. Since: 2.56 Since GLib 2.80, when E is used with %c, %C, %x, %X, %y or %Y, the date is formatted using an alternate era representation specific to the locale. This is typically used for the Thai solar calendar or Japanese era names, for example. - %Ec: the preferred date and time representation for the current locale, using the alternate era representation - %EC: the name of the era - %Ex: the preferred date representation for the current locale without the time, using the alternate era representation - %EX: the preferred time representation for the current locale without the date, using the alternate era representation - %Ey: the year since the beginning of the era denoted by the %EC specifier - %EY: the full alternative year representation

    • @p format is a valid UTF-8 string, containing the format for the #GDateTime.
    • @r a newly allocated string formatted to the requested format or %NULL in the case that there was an error (such as a format specifier not being supported in the current locale). The string should be freed with g_free()..
  • format_iso8601 ()

    Format @datetime in ISO 8601 format, including the date, time and time zone, and return that as a UTF-8 encoded string. Since GLib 2.66, this will output to sub-second precision if needed.

    • @r a newly allocated string formatted in ISO 8601 format or %NULL in the case that there was an error. The string should be freed with g_free()..
  • get_day_of_month ()

    Retrieves the day of the month represented by @datetime in the gregorian calendar.

    • @r the day of the month.
  • get_day_of_week ()

    Retrieves the ISO 8601 day of the week on which @datetime falls (1 is Monday, 2 is Tuesday... 7 is Sunday).

    • @r the day of the week.
  • get_day_of_year ()

    Retrieves the day of the year represented by @datetime in the Gregorian calendar.

    • @r the day of the year.
  • get_hour ()

    Retrieves the hour of the day represented by @datetime

    • @r the hour of the day.
  • get_microsecond ()

    Retrieves the microsecond of the date represented by @datetime

    • @r the microsecond of the second.
  • get_minute ()

    Retrieves the minute of the hour represented by @datetime

    • @r the minute of the hour.
  • get_month ()

    Retrieves the month of the year represented by @datetime in the Gregorian calendar.

    • @r the month represented by @datetime.
  • get_second ()

    Retrieves the second of the minute represented by @datetime

    • @r the second represented by @datetime.
  • get_seconds ()

    Retrieves the number of seconds since the start of the last minute, including the fractional part.

    • @r the number of seconds.
  • get_timezone ()

    Get the time zone for this @datetime.

    • @r the time zone.
  • get_timezone_abbreviation ()

    Determines the time zone abbreviation to be used at the time and in the time zone of @datetime. For example, in Toronto this is currently "EST" during the winter months and "EDT" during the summer months when daylight savings time is in effect.

    • @r the time zone abbreviation. The returned string is owned by the #GDateTime and it should not be modified or freed.
  • get_week_numbering_year ()

    Returns the ISO 8601 week-numbering year in which the week containing

    • @datetime falls. This function, taken together with g_date_time_get_week_of_year() and g_date_time_get_day_of_week() can be used to determine the full ISO week date on which @datetime falls. This is usually equal to the normal Gregorian year (as returned by g_date_time_get_year()), except as detailed below: For Thursday, the week-numbering year is always equal to the usual calendar year. For other days, the number is such that every day within a complete week (Monday to Sunday) is contained within the same week-numbering year. For Monday, Tuesday and Wednesday occurring near the end of the year, this may mean that the week-numbering year is one greater than the calendar year (so that these days have the same week-numbering year as the Thursday occurring early in the next year). For Friday, Saturday and Sunday occurring near the start of the year, this may mean that the week-numbering year is one less than the calendar year (so that these days have the same week-numbering year as the Thursday occurring late in the previous year). An equivalent description is that the week-numbering year is equal to the calendar year containing the majority of the days in the current week (Monday to Sunday). Note that January 1 0001 in the proleptic Gregorian calendar is a Monday, so this function never returns 0.
    • @r the ISO 8601 week-numbering year for @datetime.
  • get_week_of_year ()

    Returns the ISO 8601 week number for the week containing @datetime. The ISO 8601 week number is the same for every day of the week (from Moday through Sunday). That can produce some unusual results (described below). The first week of the year is week 1. This is the week that contains the first Thursday of the year. Equivalently, this is the first week that has more than 4 of its days falling within the calendar year. The value 0 is never returned by this function. Days contained within a year but occurring before the first ISO 8601 week of that year are considered as being contained in the last week of the previous year. Similarly, the final days of a calendar year may be considered as being part of the first ISO 8601 week of the next year if 4 or more days of that week are contained within the new year.

    • @r the ISO 8601 week number for @datetime..
  • get_year ()

    Retrieves the year represented by @datetime in the Gregorian calendar.

    • @r the year represented by @datetime.
  • get_ymd ()

    Retrieves the Gregorian day, month, and year of a given #GDateTime.

    • @p year is the return location for the gregorian year, or %NULL..
    • @p month is the return location for the month of the year, or %NULL..
    • @p day is the return location for the day of the month, or %NULL..
    • @r None.
  • hash ()

    Hashes @datetime into a #guint, suitable for use within #GHashTable.

    • @r a #guint containing the hash.
  • is_daylight_savings ()

    Determines if daylight savings time is in effect at the time and in the time zone of @datetime.

    • @r %TRUE if daylight savings time is in effect.
  • ref ()

    Atomically increments the reference count of @datetime by one.

    • @r the #GDateTime with the reference count increased.
  • to_local ()

    Creates a new #GDateTime corresponding to the same instant in time as

    • @datetime, but in the local time zone. This call is equivalent to calling g_date_time_to_timezone() with the time zone returned by g_time_zone_new_local().
    • @r the newly created #GDateTime which should be freed with g_date_time_unref(), or %NULL.
  • to_timeval (object tv)

    Stores the instant in time that @datetime represents into @tv. The time contained in a #GTimeVal is always stored in the form of seconds elapsed since 1970-01-01 00:00:00 UTC, regardless of the time zone associated with @datetime. On systems where 'long' is 32bit (ie: all 32bit systems and all Windows systems), a #GTimeVal is incapable of storing the entire range of values that #GDateTime is capable of expressing. On those systems, this function returns %FALSE to indicate that the time is out of range. On systems where 'long' is 64bit, this function never fails.

    • @p tv is a #GTimeVal to modify.
    • @r %TRUE if successful, else %FALSE.
  • to_timezone (object tz)

    Create a new #GDateTime corresponding to the same instant in time as

    • @datetime, but in the time zone @tz. This call can fail in the case that the time goes out of bounds. For example, converting 0001-01-01 00:00:00 UTC to a time zone west of Greenwich will fail (due to the year 0 being out of range).
    • @p tz is the new #GTimeZone.
    • @r the newly created #GDateTime which should be freed with g_date_time_unref(), or %NULL.
  • to_unix ()

    Gives the Unix time corresponding to @datetime, rounding down to the nearest second. Unix time is the number of seconds that have elapsed since 1970-01-01 00:00:00 UTC, regardless of the time zone associated with @datetime.

    • @r the Unix time corresponding to @datetime.
  • to_unix_usec ()

    Gives the Unix time corresponding to @datetime, in microseconds. Unix time is the number of microseconds that have elapsed since 1970-01-01 00:00:00 UTC, regardless of the time zone associated with @datetime.

    • @r the Unix time corresponding to @datetime.
  • to_utc ()

    Creates a new #GDateTime corresponding to the same instant in time as

    • @datetime, but in UTC. This call is equivalent to calling g_date_time_to_timezone() with the time zone returned by g_time_zone_new_utc().
    • @r the newly created #GDateTime which should be freed with g_date_time_unref(), or %NULL.
  • unref ()

    Atomically decrements the reference count of @datetime by one. When the reference count reaches zero, the resources allocated by @datetime are freed

    • @r None.