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<?xml version="1.0" encoding="UTF-8"?>
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<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
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<title>KSystemTimeZoneBackend</title>
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KDE 4.7 PyKDE API Reference
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<h1>KSystemTimeZoneBackend Class Reference</h1>
<code>from PyKDE4.kdecore import *</code>
<p>
Inherits: <a href="../kdecore/KTimeZoneBackend.html">KTimeZoneBackend</a><br />
<h2>Detailed Description</h2>
<p>Backend class for KSystemTimeZone class.
</p>
<p>
This class implements KSystemTimeZone's constructors and virtual methods. A
backend class is required for all classes inherited from KTimeZone to
allow KTimeZone virtual methods to work together with reference counting of
private data.
</p>
<p>
Backend class for KSystemTimeZone class
<dl class="see" compact><dt><b>See also:</b></dt><dd> KTimeZoneBackend, KSystemTimeZone, KTimeZone
</dd></dl>
<dl class="author" compact><dt><b>Author:</b></dt><dd> David Jarvie <djarvie@kde.org>. </dd></dl>
</p>
<table border="0" cellpadding="0" cellspacing="0"><tr><td colspan="2"><br><h2>Methods</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#KSystemTimeZoneBackend">__init__</a> (self, <a href="../kdecore/KSystemTimeZoneSource.html">KSystemTimeZoneSource</a> source, QString name, QString countryCode, float latitude, float longitude, QString comment)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../kdecore/KTimeZoneBackend.html">KTimeZoneBackend</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#clone">clone</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#isDst">isDst</a> (self, <a href="../kdecore/KTimeZone.html">KTimeZone</a> caller, time_t t)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#isDstAtUtc">isDstAtUtc</a> (self, <a href="../kdecore/KTimeZone.html">KTimeZone</a> caller, QDateTime utcDateTime)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="#offset">offset</a> (self, <a href="../kdecore/KTimeZone.html">KTimeZone</a> caller, time_t t)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="#offsetAtUtc">offsetAtUtc</a> (self, <a href="../kdecore/KTimeZone.html">KTimeZone</a> caller, QDateTime utcDateTime)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="#offsetAtZoneTime">offsetAtZoneTime</a> (self, <a href="../kdecore/KTimeZone.html">KTimeZone</a> caller, QDateTime zoneDateTime, int secondOffset)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">QByteArray </td><td class="memItemRight" valign="bottom"><a class="el" href="#type">type</a> (self)</td></tr>
</table>
<hr><h2>Method Documentation</h2><a class="anchor" name="KSystemTimeZoneBackend"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">__init__</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../kdecore/KSystemTimeZoneSource.html">KSystemTimeZoneSource</a> </td>
<td class="paramname"><em>source</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QString </td>
<td class="paramname"><em>name</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QString </td>
<td class="paramname"><em>countryCode</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">float </td>
<td class="paramname"><em>latitude</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">float </td>
<td class="paramname"><em>longitude</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QString </td>
<td class="paramname"><em>comment</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Implements KSystemTimeZone.KSystemTimeZone().
</p></div></div><a class="anchor" name="clone"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"><a href="../kdecore/KTimeZoneBackend.html">KTimeZoneBackend</a> clone</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Creates a copy of this instance.
</p>
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd> new copy
</dd></dl>
</p></div></div><a class="anchor" name="isDst"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">bool isDst</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../kdecore/KTimeZone.html">KTimeZone</a> </td>
<td class="paramname"><em>caller</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">time_t </td>
<td class="paramname"><em>t</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Implements KSystemTimeZone.isDst().
</p>
<p>
Returns whether daylight savings time is in operation at a specified UTC time.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>caller</em> </td><td> calling KSystemTimeZone object
<tr><td></td><td valign="top"><em>t</em> </td><td> the UTC time, measured in seconds since 00:00:00 UTC 1st January 1970
(as returned by time(2))
</td></tr> </table></dl>
<p> <dl class="return" compact><dt><b>Returns:</b></dt><dd> true if daylight savings time is in operation, false otherwise
</dd></dl>
</p></div></div><a class="anchor" name="isDstAtUtc"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">bool isDstAtUtc</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../kdecore/KTimeZone.html">KTimeZone</a> </td>
<td class="paramname"><em>caller</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QDateTime </td>
<td class="paramname"><em>utcDateTime</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Implements KSystemTimeZone.isDstAtUtc().
</p>
<p>
Returns whether daylight savings time is in operation at the given UTC date/time.
</p>
<p>
Note that system times are represented using time_t. An error occurs if the date
falls outside the range supported by time_t.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>caller</em> </td><td> calling KSystemTimeZone object
<tr><td></td><td valign="top"><em>utcDateTime</em> </td><td> the UTC date/time. An error occurs if
<b>utcDateTime.timeSpec()</b> is not Qt.UTC.
</td></tr> </table></dl>
<p> <dl class="return" compact><dt><b>Returns:</b></dt><dd> true if daylight savings time is in operation, false otherwise
</dd></dl>
</p></div></div><a class="anchor" name="offset"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">int offset</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../kdecore/KTimeZone.html">KTimeZone</a> </td>
<td class="paramname"><em>caller</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">time_t </td>
<td class="paramname"><em>t</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Implements KSystemTimeZone.offset().
</p>
<p>
Returns the offset of this time zone to UTC at a specified UTC time.
</p>
<p>
The offset is the number of seconds which you must add to UTC to get
local time in this time zone.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>caller</em> </td><td> calling KSystemTimeZone object
<tr><td></td><td valign="top"><em>t</em> </td><td> the UTC time at which the offset is to be calculated, measured in seconds
since 00:00:00 UTC 1st January 1970 (as returned by time(2))
</td></tr> </table></dl>
<p> <dl class="return" compact><dt><b>Returns:</b></dt><dd> offset in seconds, or 0 if error
</dd></dl>
</p></div></div><a class="anchor" name="offsetAtUtc"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">int offsetAtUtc</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../kdecore/KTimeZone.html">KTimeZone</a> </td>
<td class="paramname"><em>caller</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QDateTime </td>
<td class="paramname"><em>utcDateTime</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Implements KSystemTimeZone.offsetAtUtc().
</p>
<p>
Returns the offset of this time zone to UTC at the given UTC date/time.
</p>
<p>
The offset is the number of seconds which you must add to UTC to get
local time in this time zone.
</p>
<p>
Note that system times are represented using time_t. An error occurs if the date
falls outside the range supported by time_t.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>caller</em> </td><td> calling KSystemTimeZone object
<tr><td></td><td valign="top"><em>utcDateTime</em> </td><td> the UTC date/time at which the offset is to be calculated.
An error occurs if <b>utcDateTime.timeSpec()</b> is not Qt.UTC.
</td></tr> </table></dl>
<p> <dl class="return" compact><dt><b>Returns:</b></dt><dd> offset in seconds, or 0 if error
</dd></dl>
</p></div></div><a class="anchor" name="offsetAtZoneTime"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">int offsetAtZoneTime</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../kdecore/KTimeZone.html">KTimeZone</a> </td>
<td class="paramname"><em>caller</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QDateTime </td>
<td class="paramname"><em>zoneDateTime</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>secondOffset</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Implements KSystemTimeZone.offsetAtZoneTime().
</p>
<p>
Returns the offset of this time zone to UTC at the given local date/time.
Because of daylight savings time shifts, the date/time may occur twice. Optionally,
the offsets at both occurrences of <b>dateTime</b> are calculated.
</p>
<p>
The offset is the number of seconds which you must add to UTC to get
local time in this time zone.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>caller</em> </td><td> calling KSystemTimeZone object
<tr><td></td><td valign="top"><em>zoneDateTime</em> </td><td> the date/time at which the offset is to be calculated. This
is interpreted as a local time in this time zone. An error
occurs if <b>zoneDateTime.timeSpec()</b> is not Qt.LocalTime.
<tr><td></td><td valign="top"><em>secondOffset</em> </td><td> if non-null, and the <b>zoneDateTime</b> occurs twice, receives the
UTC offset for the second occurrence. Otherwise, it is set
the same as the return value.
</td></tr> </table></dl>
<p> <dl class="return" compact><dt><b>Returns:</b></dt><dd> offset in seconds. If <b>zoneDateTime</b> occurs twice, it is the offset at the
first occurrence which is returned.
</dd></dl>
</p></div></div><a class="anchor" name="type"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">QByteArray type</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Returns the class name of the data represented by this instance.
</p>
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd> "KSystemTimeZone"
</dd></dl>
</p></div></div>
</div>
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