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<li class="navelem"><a class="el" href="namespaceGlib.html">Glib</a></li><li class="navelem"><a class="el" href="classGlib_1_1TimeZone.html">TimeZone</a></li> </ul>
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<p><a class="el" href="classGlib_1_1TimeZone.html" title="TimeZone - A structure representing a time zone. ">TimeZone</a> - A structure representing a time zone.
<a href="classGlib_1_1TimeZone.html#details">More...</a></p>
<p><code>#include <glibmm/timezone.h></code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:af9c8a7635fc43243d13799b7cf9544fc"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1TimeZone.html#af9c8a7635fc43243d13799b7cf9544fc">TimeZone</a> ()</td></tr>
<tr class="memdesc:af9c8a7635fc43243d13799b7cf9544fc"><td class="mdescLeft"> </td><td class="mdescRight">Constructs an invalid object. <a href="#af9c8a7635fc43243d13799b7cf9544fc">More...</a><br /></td></tr>
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<tr class="memitem:a37e807fdfc03d2bcd650d03b8c100268"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1TimeZone.html#a37e807fdfc03d2bcd650d03b8c100268">TimeZone</a> (GTimeZone* castitem, bool make_a_copy=false)</td></tr>
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<tr class="memitem:a97a5c31d3146547deb2307cf1d38a734"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1TimeZone.html#a97a5c31d3146547deb2307cf1d38a734">TimeZone</a> (const <a class="el" href="classGlib_1_1TimeZone.html">TimeZone</a>& src)</td></tr>
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<tr class="memitem:a66afaef68db0a541e2ea1ac3978f56bc"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classGlib_1_1TimeZone.html">TimeZone</a>& </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1TimeZone.html#a66afaef68db0a541e2ea1ac3978f56bc">operator=</a> (const <a class="el" href="classGlib_1_1TimeZone.html">TimeZone</a>& src)</td></tr>
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<tr class="memitem:aa3f0f1e0314a275277cd9cd7de02940a"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1TimeZone.html#aa3f0f1e0314a275277cd9cd7de02940a">TimeZone</a> (<a class="el" href="classGlib_1_1TimeZone.html">TimeZone</a>&& other) noexcept</td></tr>
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<tr class="memitem:aa839e78faf7d69904b4f4ad7a666795e"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classGlib_1_1TimeZone.html">TimeZone</a>& </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1TimeZone.html#aa839e78faf7d69904b4f4ad7a666795e">operator=</a> (<a class="el" href="classGlib_1_1TimeZone.html">TimeZone</a>&& other) noexcept</td></tr>
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<tr class="memitem:a62a61dde33a76f35f34f46ad298495b0"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1TimeZone.html#a62a61dde33a76f35f34f46ad298495b0">~TimeZone</a> () noexcept</td></tr>
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<tr class="memitem:af0c4b19b5077a33abdea239f71af852d"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1TimeZone.html#af0c4b19b5077a33abdea239f71af852d">swap</a> (<a class="el" href="classGlib_1_1TimeZone.html">TimeZone</a>& other) noexcept</td></tr>
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<tr class="memitem:a5018eca73f72727ef17c5187d83f749e"><td class="memItemLeft" align="right" valign="top">GTimeZone* </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1TimeZone.html#a5018eca73f72727ef17c5187d83f749e">gobj</a> ()</td></tr>
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<tr class="memitem:afc6556600c7fd49b5ef596c0974a161c"><td class="memItemLeft" align="right" valign="top">const GTimeZone* </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1TimeZone.html#afc6556600c7fd49b5ef596c0974a161c">gobj</a> () const </td></tr>
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<tr class="memitem:a210b9c3c3478f2292b1d26b3d3171211"><td class="memItemLeft" align="right" valign="top">GTimeZone* </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1TimeZone.html#a210b9c3c3478f2292b1d26b3d3171211">gobj_copy</a> () const </td></tr>
<tr class="memdesc:a210b9c3c3478f2292b1d26b3d3171211"><td class="mdescLeft"> </td><td class="mdescRight">Provides access to the underlying C instance. The caller is responsible for freeing it. Use when directly setting fields in structs. <a href="#a210b9c3c3478f2292b1d26b3d3171211">More...</a><br /></td></tr>
<tr class="separator:a210b9c3c3478f2292b1d26b3d3171211"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a0f3242fb2512db7eaaa495a7c59da068"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1TimeZone.html#a0f3242fb2512db7eaaa495a7c59da068">find_interval</a> (<a class="el" href="group__glibmmEnums.html#ga56a2fdf6fb8599b99302868a176aac43">TimeType</a> type, gint64 time) const </td></tr>
<tr class="memdesc:a0f3242fb2512db7eaaa495a7c59da068"><td class="mdescLeft"> </td><td class="mdescRight">Finds an the interval within <em>tz</em> that corresponds to the given <em>time</em>. <a href="#a0f3242fb2512db7eaaa495a7c59da068">More...</a><br /></td></tr>
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<tr class="memitem:aecf5f84a35a598bce6a9a8ad0a61b323"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1TimeZone.html#aecf5f84a35a598bce6a9a8ad0a61b323">adjust_time</a> (<a class="el" href="group__glibmmEnums.html#ga56a2fdf6fb8599b99302868a176aac43">TimeType</a> type, gint64& time) const </td></tr>
<tr class="memdesc:aecf5f84a35a598bce6a9a8ad0a61b323"><td class="mdescLeft"> </td><td class="mdescRight">Finds an interval within <em>tz</em> that corresponds to the given <em>time</em>, possibly adjusting <em>time</em> if required to fit into an interval. <a href="#aecf5f84a35a598bce6a9a8ad0a61b323">More...</a><br /></td></tr>
<tr class="separator:aecf5f84a35a598bce6a9a8ad0a61b323"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ac412636765e4cf0b2caff196831c0f3c"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classGlib_1_1ustring.html">Glib::ustring</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1TimeZone.html#ac412636765e4cf0b2caff196831c0f3c">get_abbreviation</a> (int interval) const </td></tr>
<tr class="memdesc:ac412636765e4cf0b2caff196831c0f3c"><td class="mdescLeft"> </td><td class="mdescRight">Determines the time zone abbreviation to be used during a particular <em>interval</em> of time in the time zone <em>tz</em>. <a href="#ac412636765e4cf0b2caff196831c0f3c">More...</a><br /></td></tr>
<tr class="separator:ac412636765e4cf0b2caff196831c0f3c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a2745bd79ce4597e1894d248ceacfb485"><td class="memItemLeft" align="right" valign="top">gint32 </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1TimeZone.html#a2745bd79ce4597e1894d248ceacfb485">get_offset</a> (int interval) const </td></tr>
<tr class="memdesc:a2745bd79ce4597e1894d248ceacfb485"><td class="mdescLeft"> </td><td class="mdescRight">Determines the offset to UTC in effect during a particular <em>interval</em> of time in the time zone <em>tz</em>. <a href="#a2745bd79ce4597e1894d248ceacfb485">More...</a><br /></td></tr>
<tr class="separator:a2745bd79ce4597e1894d248ceacfb485"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a7b6ce83c671b197d12caf8a87cabe280"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1TimeZone.html#a7b6ce83c671b197d12caf8a87cabe280">is_dst</a> (int interval) const </td></tr>
<tr class="memdesc:a7b6ce83c671b197d12caf8a87cabe280"><td class="mdescLeft"> </td><td class="mdescRight">Determines if daylight savings time is in effect during a particular <em>interval</em> of time in the time zone <em>tz</em>. <a href="#a7b6ce83c671b197d12caf8a87cabe280">More...</a><br /></td></tr>
<tr class="separator:a7b6ce83c671b197d12caf8a87cabe280"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a183d514edf88cdd2b85878d9a837887a"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classGlib_1_1ustring.html">Glib::ustring</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1TimeZone.html#a183d514edf88cdd2b85878d9a837887a">get_identifier</a> () const </td></tr>
<tr class="memdesc:a183d514edf88cdd2b85878d9a837887a"><td class="mdescLeft"> </td><td class="mdescRight">Get the identifier of this <a class="el" href="classGlib_1_1TimeZone.html" title="TimeZone - A structure representing a time zone. ">TimeZone</a>, as passed to g_time_zone_new(). <a href="#a183d514edf88cdd2b85878d9a837887a">More...</a><br /></td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-methods"></a>
Static Public Member Functions</h2></td></tr>
<tr class="memitem:ad53f95cbf8307a835575a33becff076e"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="classGlib_1_1TimeZone.html">TimeZone</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1TimeZone.html#ad53f95cbf8307a835575a33becff076e">create</a> (const <a class="el" href="classGlib_1_1ustring.html">Glib::ustring</a>& identifier)</td></tr>
<tr class="memdesc:ad53f95cbf8307a835575a33becff076e"><td class="mdescLeft"> </td><td class="mdescRight">Creates a <a class="el" href="classGlib_1_1TimeZone.html" title="TimeZone - A structure representing a time zone. ">TimeZone</a> corresponding to <em>identifier</em>. <a href="#ad53f95cbf8307a835575a33becff076e">More...</a><br /></td></tr>
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<tr class="memitem:ae0eeec8e8ec473789702acac8e8ed37d"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="classGlib_1_1TimeZone.html">TimeZone</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1TimeZone.html#ae0eeec8e8ec473789702acac8e8ed37d">create_local</a> ()</td></tr>
<tr class="memdesc:ae0eeec8e8ec473789702acac8e8ed37d"><td class="mdescLeft"> </td><td class="mdescRight">Creates a <a class="el" href="classGlib_1_1TimeZone.html" title="TimeZone - A structure representing a time zone. ">TimeZone</a> corresponding to local time. <a href="#ae0eeec8e8ec473789702acac8e8ed37d">More...</a><br /></td></tr>
<tr class="separator:ae0eeec8e8ec473789702acac8e8ed37d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a3321991cbc511c9c1365d1e26de6fc87"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="classGlib_1_1TimeZone.html">TimeZone</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1TimeZone.html#a3321991cbc511c9c1365d1e26de6fc87">create_utc</a> ()</td></tr>
<tr class="memdesc:a3321991cbc511c9c1365d1e26de6fc87"><td class="mdescLeft"> </td><td class="mdescRight">Creates a <a class="el" href="classGlib_1_1TimeZone.html" title="TimeZone - A structure representing a time zone. ">TimeZone</a> corresponding to UTC. <a href="#a3321991cbc511c9c1365d1e26de6fc87">More...</a><br /></td></tr>
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</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-attribs"></a>
Protected Attributes</h2></td></tr>
<tr class="memitem:a717ab5d4a1cc6c77665dd4e78b517ba4"><td class="memItemLeft" align="right" valign="top">GTimeZone* </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1TimeZone.html#a717ab5d4a1cc6c77665dd4e78b517ba4">gobject_</a></td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="related"></a>
Related Functions</h2></td></tr>
<tr><td class="ititle" colspan="2"><p>(Note that these are not member functions.) </p>
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<tr class="memitem:a8d673c87d9a7e230830979b266a88dfd"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1TimeZone.html#a8d673c87d9a7e230830979b266a88dfd">swap</a> (<a class="el" href="classGlib_1_1TimeZone.html">TimeZone</a>& lhs, <a class="el" href="classGlib_1_1TimeZone.html">TimeZone</a>& rhs) noexcept</td></tr>
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<tr class="memitem:a2d4464f05ba65fd63df60e9bcae8d97e"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classGlib_1_1TimeZone.html">Glib::TimeZone</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1TimeZone.html#a2d4464f05ba65fd63df60e9bcae8d97e">wrap</a> (GTimeZone* object, bool take_copy=false)</td></tr>
<tr class="memdesc:a2d4464f05ba65fd63df60e9bcae8d97e"><td class="mdescLeft"> </td><td class="mdescRight">A <a class="el" href="namespaceGlib.html#a671306f4a3a0cae5ab4d7a9d54886592">Glib::wrap()</a> method for this object. <a href="#a2d4464f05ba65fd63df60e9bcae8d97e">More...</a><br /></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p><a class="el" href="classGlib_1_1TimeZone.html" title="TimeZone - A structure representing a time zone. ">TimeZone</a> - A structure representing a time zone. </p>
<p><a class="el" href="classGlib_1_1TimeZone.html" title="TimeZone - A structure representing a time zone. ">TimeZone</a> is a structure that represents a time zone, at no particular point in time. It is refcounted and immutable.</p>
<p>A time zone contains a number of intervals. Each interval has an abbreviation to describe it, an offet to UTC and a flag indicating if the daylight savings time is in effect during that interval. A time zone always has at least one interval – interval 0.</p>
<p>Every UTC time is contained within exactly one interval, but a given local time may be contained within zero, one or two intervals (due to incontinuities associated with daylight savings time).</p>
<p>An interval may refer to a specific period of time (eg: the duration of daylight savings time during 2010) or it may refer to many periods of time that share the same properties (eg: all periods of daylight savings time). It is also possible (usually for political reasons) that some properties (like the abbreviation) change between intervals without other properties changing. </p><dl class="since_2_30"><dt><b><a class="el" href="since_2_30.html#_since_2_30000002">Since glibmm 2.30:</a></b></dt><dd></dd></dl>
</div><h2 class="groupheader">Constructor & Destructor Documentation</h2>
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<p>Constructs an invalid object. </p>
<p>E.g. for output arguments to methods. There is not much you can do with the object before it has been assigned a valid value. </p>
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<td class="paramtype">const <a class="el" href="classGlib_1_1TimeZone.html">TimeZone</a>& </td>
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<td class="memname">Glib::TimeZone::TimeZone </td>
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<td class="paramtype"><a class="el" href="classGlib_1_1TimeZone.html">TimeZone</a>&& </td>
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<h2 class="groupheader">Member Function Documentation</h2>
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<td class="memname">int Glib::TimeZone::adjust_time </td>
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<td class="paramtype"><a class="el" href="group__glibmmEnums.html#ga56a2fdf6fb8599b99302868a176aac43">TimeType</a> </td>
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<p>Finds an interval within <em>tz</em> that corresponds to the given <em>time</em>, possibly adjusting <em>time</em> if required to fit into an interval. </p>
<p>The meaning of <em>time</em> depends on <em>type</em>.</p>
<p>This function is similar to g_time_zone_find_interval(), with the difference that it always succeeds (by making the adjustments described below).</p>
<p>In any of the cases where g_time_zone_find_interval() succeeds then this function returns the same value, without modifying <em>time</em>.</p>
<p>This function may, however, modify <em>time</em> in order to deal with non-existent times. If the non-existent local <em>time</em> of 02:30 were requested on March 14th 2010 in Toronto then this function would adjust <em>time</em> to be 03:00 and return the interval containing the adjusted time.</p>
<dl class="since_2_26"><dt><b><a class="el" href="since_2_26.html#_since_2_26000057">Since glibmm 2.26:</a></b></dt><dd></dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">type</td><td>The TimeType of <em>time</em>. </td></tr>
<tr><td class="paramname">time</td><td>A pointer to a number of seconds since January 1, 1970. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>The interval containing <em>time</em>, never -1. </dd></dl>
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<td class="memname">static <a class="el" href="classGlib_1_1TimeZone.html">TimeZone</a> Glib::TimeZone::create </td>
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<p>Creates a <a class="el" href="classGlib_1_1TimeZone.html" title="TimeZone - A structure representing a time zone. ">TimeZone</a> corresponding to <em>identifier</em>. </p>
<p><em>identifier</em> can either be an RFC3339/ISO 8601 time offset or something that would pass as a valid value for the <code>TZ</code> environment variable (including <code>nullptr</code>).</p>
<p>In Windows, <em>identifier</em> can also be the unlocalized name of a time zone for standard time, for example "Pacific Standard Time".</p>
<p>Valid RFC3339 time offsets are <code>"Z"</code> (for UTC) or <code>"±hh:mm"</code>. ISO 8601 additionally specifies <code>"±hhmm"</code> and <code>"±hh"</code>. Offsets are time values to be added to Coordinated Universal Time (UTC) to get the local time.</p>
<p>In UNIX, the <code>TZ</code> environment variable typically corresponds to the name of a file in the zoneinfo database, or string in "std offset [dst [offset],start[/time],end[/time]]" (POSIX) format. There are no spaces in the specification. The name of standard and daylight savings time zone must be three or more alphabetic characters. Offsets are time values to be added to local time to get Coordinated Universal Time (UTC) and should be <code>"[±]hh[[:]mm[:ss]]"</code>. Dates are either <code>"Jn"</code> (Julian day with n between 1 and 365, leap years not counted), <code>"n"</code> (zero-based Julian day with n between 0 and 365) or <code>"Mm.w.d"</code> (day d (0 <= d <= 6) of week w (1 <= w <= 5) of month m (1 <= m <= 12), day 0 is a Sunday). Times are in local wall clock time, the default is 02:00:00.</p>
<p>In Windows, the "tzn[+|–]hh[:mm[:ss]][dzn]" format is used, but also accepts POSIX format. The Windows format uses US rules for all time zones; daylight savings time is 60 minutes behind the standard time with date and time of change taken from Pacific Standard Time. Offsets are time values to be added to the local time to get Coordinated Universal Time (UTC).</p>
<p>g_time_zone_new_local() calls this function with the value of the <code>TZ</code> environment variable. This function itself is independent of the value of <code>TZ</code>, but if <em>identifier</em> is <code>nullptr</code> then <code>/etc/localtime</code> will be consulted to discover the correct time zone on UNIX and the registry will be consulted or GetTimeZoneInformation() will be used to get the local time zone on Windows.</p>
<p>If intervals are not available, only time zone rules from <code>TZ</code> environment variable or other means, then they will be computed from year 1900 to 2037. If the maximum year for the rules is available and it is greater than 2037, then it will followed instead.</p>
<p>See <a href="http://tools.ietf.org/html/rfc3339#section-5.6">RFC3339 §5.6</a> for a precise definition of valid RFC3339 time offsets (the <code>time-offset</code> expansion) and ISO 8601 for the full list of valid time offsets. See <a href="http://www.gnu.org/s/libc/manual/html_node/TZ-Variable.html">The GNU C Library manual</a> for an explanation of the possible values of the <code>TZ</code> environment variable. See <a href="http://msdn.microsoft.com/en-us/library/ms912391%28v=winembedded.11%29.aspx">Microsoft Time Zone Index Values</a> for the list of time zones on Windows.</p>
<p>You should release the return value by calling g_time_zone_unref() when you are done with it.</p>
<dl class="since_2_26"><dt><b><a class="el" href="since_2_26.html#_since_2_26000053">Since glibmm 2.26:</a></b></dt><dd></dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">identifier</td><td>A timezone identifier. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>The requested timezone. </dd></dl>
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<td class="memname">static <a class="el" href="classGlib_1_1TimeZone.html">TimeZone</a> Glib::TimeZone::create_local </td>
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<p>Creates a <a class="el" href="classGlib_1_1TimeZone.html" title="TimeZone - A structure representing a time zone. ">TimeZone</a> corresponding to local time. </p>
<p>The local time zone may change between invocations to this function; for example, if the system administrator changes it.</p>
<p>This is equivalent to calling g_time_zone_new() with the value of the <code>TZ</code> environment variable (including the possibility of <code>nullptr</code>).</p>
<p>You should release the return value by calling g_time_zone_unref() when you are done with it.</p>
<dl class="since_2_26"><dt><b><a class="el" href="since_2_26.html#_since_2_26000054">Since glibmm 2.26:</a></b></dt><dd></dd></dl>
<dl class="section return"><dt>Returns</dt><dd>The local timezone. </dd></dl>
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<td class="memname">static <a class="el" href="classGlib_1_1TimeZone.html">TimeZone</a> Glib::TimeZone::create_utc </td>
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<p>Creates a <a class="el" href="classGlib_1_1TimeZone.html" title="TimeZone - A structure representing a time zone. ">TimeZone</a> corresponding to UTC. </p>
<p>This is equivalent to calling g_time_zone_new() with a value like "Z", "UTC", "+00", etc.</p>
<p>You should release the return value by calling g_time_zone_unref() when you are done with it.</p>
<dl class="since_2_26"><dt><b><a class="el" href="since_2_26.html#_since_2_26000055">Since glibmm 2.26:</a></b></dt><dd></dd></dl>
<dl class="section return"><dt>Returns</dt><dd>The universal timezone. </dd></dl>
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<td class="memname">int Glib::TimeZone::find_interval </td>
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<p>Finds an the interval within <em>tz</em> that corresponds to the given <em>time</em>. </p>
<p>The meaning of <em>time</em> depends on <em>type</em>.</p>
<p>If <em>type</em> is TIME_TYPE_UNIVERSAL then this function will always succeed (since universal time is monotonic and continuous).</p>
<p>Otherwise <em>time</em> is treated as local time. The distinction between TIME_TYPE_STANDARD and TIME_TYPE_DAYLIGHT is ignored except in the case that the given <em>time</em> is ambiguous. In Toronto, for example, 01:30 on November 7th 2010 occurred twice (once inside of daylight savings time and the next, an hour later, outside of daylight savings time). In this case, the different value of <em>type</em> would result in a different interval being returned.</p>
<p>It is still possible for this function to fail. In Toronto, for example, 02:00 on March 14th 2010 does not exist (due to the leap forward to begin daylight savings time). -1 is returned in that case.</p>
<dl class="since_2_26"><dt><b><a class="el" href="since_2_26.html#_since_2_26000056">Since glibmm 2.26:</a></b></dt><dd></dd></dl>
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<tr><td class="paramname">type</td><td>The TimeType of <em>time</em>. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>The interval containing <em>time</em>, or -1 in case of failure. </dd></dl>
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<p>Determines the time zone abbreviation to be used during a particular <em>interval</em> of time in the time zone <em>tz</em>. </p>
<p>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.</p>
<dl class="since_2_26"><dt><b><a class="el" href="since_2_26.html#_since_2_26000058">Since glibmm 2.26:</a></b></dt><dd></dd></dl>
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<dl class="section return"><dt>Returns</dt><dd>The time zone abbreviation, which belongs to <em>tz</em>. </dd></dl>
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<td class="memname"><a class="el" href="classGlib_1_1ustring.html">Glib::ustring</a> Glib::TimeZone::get_identifier </td>
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<p>Get the identifier of this <a class="el" href="classGlib_1_1TimeZone.html" title="TimeZone - A structure representing a time zone. ">TimeZone</a>, as passed to g_time_zone_new(). </p>
<p>If the identifier passed at construction time was not recognised, <code>UTC</code> will be returned. If it was <code>nullptr</code>, the identifier of the local timezone at construction time will be returned.</p>
<p>The identifier will be returned in the same format as provided at construction time: if provided as a time offset, that will be returned by this function.</p>
<dl class="since_2_60"><dt><b><a class="el" href="since_2_60.html#_since_2_60000003">Since glibmm 2.60:</a></b></dt><dd></dd></dl>
<dl class="section return"><dt>Returns</dt><dd>Identifier for this timezone. </dd></dl>
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<td class="memname">gint32 Glib::TimeZone::get_offset </td>
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<p>Determines the offset to UTC in effect during a particular <em>interval</em> of time in the time zone <em>tz</em>. </p>
<p>The offset is the number of seconds that you add to UTC time to arrive at local time for <em>tz</em> (ie: negative numbers for time zones west of GMT, positive numbers for east).</p>
<dl class="since_2_26"><dt><b><a class="el" href="since_2_26.html#_since_2_26000059">Since glibmm 2.26:</a></b></dt><dd></dd></dl>
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<dl class="section return"><dt>Returns</dt><dd>The number of seconds that should be added to UTC to get the local time in <em>tz</em>. </dd></dl>
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<p>Provides access to the underlying C instance. The caller is responsible for freeing it. Use when directly setting fields in structs. </p>
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<p>Determines if daylight savings time is in effect during a particular <em>interval</em> of time in the time zone <em>tz</em>. </p>
<dl class="since_2_26"><dt><b><a class="el" href="since_2_26.html#_since_2_26000060">Since glibmm 2.26:</a></b></dt><dd></dd></dl>
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<dl class="section return"><dt>Returns</dt><dd><code>true</code> if daylight savings time is in effect. </dd></dl>
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<td class="memname"><a class="el" href="classGlib_1_1TimeZone.html">TimeZone</a>& Glib::TimeZone::operator= </td>
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<td class="memname">void Glib::TimeZone::swap </td>
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<h2 class="groupheader">Friends And Related Function Documentation</h2>
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<td class="memname">void swap </td>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">lhs</td><td>The left-hand side </td></tr>
<tr><td class="paramname">rhs</td><td>The right-hand side </td></tr>
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<td class="memname"><a class="el" href="classGlib_1_1TimeZone.html">Glib::TimeZone</a> wrap </td>
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<td class="paramtype">GTimeZone * </td>
<td class="paramname"><em>object</em>, </td>
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<td class="paramtype">bool </td>
<td class="paramname"><em>take_copy</em> = <code>false</code> </td>
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<td>)</td>
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<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">related</span></span> </td>
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<p>A <a class="el" href="namespaceGlib.html#a671306f4a3a0cae5ab4d7a9d54886592">Glib::wrap()</a> method for this object. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">object</td><td>The C instance. </td></tr>
<tr><td class="paramname">take_copy</td><td>False if the result should take ownership of the C instance. True if it should take a new copy or ref. </td></tr>
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</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>A C++ instance that wraps this C instance. </dd></dl>
</div>
</div>
<h2 class="groupheader">Member Data Documentation</h2>
<a class="anchor" id="a717ab5d4a1cc6c77665dd4e78b517ba4"></a>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
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<td class="mlabels-left">
<table class="memname">
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<td class="memname">GTimeZone* Glib::TimeZone::gobject_</td>
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<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">protected</span></span> </td>
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