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Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_t_z_example_8cpp_source.html
author Dominic Pinkman <dominic.pinkman@nokia.com>
Fri, 13 Aug 2010 16:47:46 +0100
changeset 14 578be2adaf3e
parent 6 43e37759235e
permissions -rw-r--r--
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
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<title>TB9.2 Example Applications: examples/AppServices/timezoneconversion/TZExample.cpp Source File</title>
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<link href="tabs.css" rel="stylesheet" type="text/css"/>
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<link href="doxygen.css" rel="stylesheet" type="text/css"/>
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</head>
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<body>
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<!-- Generated by Doxygen 1.6.2 -->
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<h1>examples/AppServices/timezoneconversion/TZExample.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).</span>
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<a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span>
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<a name="l00003"></a>00003 <span class="comment">// This component and the accompanying materials are made available</span>
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<a name="l00004"></a>00004 <span class="comment">// under the terms of &quot;Eclipse Public License v1.0&quot;</span>
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<a name="l00005"></a>00005 <span class="comment">// which accompanies this distribution, and is available</span>
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<a name="l00006"></a>00006 <span class="comment">// at the URL &quot;http://www.eclipse.org/legal/epl-v10.html&quot;.</span>
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<a name="l00007"></a>00007 <span class="comment">//</span>
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<a name="l00008"></a>00008 <span class="comment">// Initial Contributors:</span>
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<a name="l00009"></a>00009 <span class="comment">// Nokia Corporation - initial contribution.</span>
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<a name="l00010"></a>00010 <span class="comment">//</span>
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<a name="l00011"></a>00011 <span class="comment">// Contributors:</span>
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<a name="l00012"></a>00012 <span class="comment">//</span>
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<a name="l00013"></a>00013 <span class="comment">// Description:</span>
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<a name="l00014"></a>00014 <span class="comment">// This example demonstrates using the time zone server (RTz) </span>
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<a name="l00015"></a>00015 <span class="comment">// to convert a local time to UTC time, then to convert the current </span>
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<a name="l00016"></a>00016 <span class="comment">// time for one time zone to another time zone, </span>
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<a name="l00017"></a>00017 <span class="comment">//</span>
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<a name="l00018"></a>00018
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<a name="l00019"></a>00019 <span class="preprocessor">#include &lt;e32base.h&gt;</span>
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<a name="l00020"></a>00020 <span class="preprocessor">#include &lt;e32cons.h&gt;</span>
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<a name="l00021"></a>00021 <span class="preprocessor">#include &lt;tz.h&gt;</span>
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<a name="l00022"></a>00022 <span class="preprocessor">#include &lt;tzconverter.h&gt;</span>
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<a name="l00023"></a>00023
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<a name="l00024"></a>00024 <span class="comment">// Local definitions </span>
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<a name="l00025"></a>00025 <span class="keyword">static</span> CConsoleBase* console;
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<a name="l00026"></a>00026 <span class="keyword">static</span> RTz tzServer;
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<a name="l00027"></a>00027 <span class="comment">// Date/time format string</span>
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<a name="l00028"></a>00028 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KDateTimeString, <span class="stringliteral">&quot;%*E%*D%X%*N%*Y %1 %2 &#39;%3 %H%:1%T%:2%S&quot;</span>);
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<a name="l00029"></a>00029
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<a name="l00030"></a>00030 <span class="comment">// length of string to hold the date/time for display</span>
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<a name="l00031"></a>00031 <span class="keyword">static</span> <span class="keyword">const</span> TInt KMaxDateTimeStringLength      = 30;
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<a name="l00032"></a>00032 <span class="comment">// string to hold the date/time for display</span>
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<a name="l00033"></a>00033 <span class="keyword">static</span> TBuf&lt;KMaxDateTimeStringLength&gt; dateTimeString;
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<a name="l00034"></a>00034 <span class="comment">// length of string to hold the time zone for display</span>
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<a name="l00035"></a>00035 <span class="keyword">const</span> TInt KMaxTimeZoneStringLength     = 20;
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<a name="l00036"></a>00036
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<a name="l00037"></a>00037 <span class="comment">// converts a UTC time to local time</span>
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<a name="l00038"></a>00038 <span class="keyword">static</span> <span class="keywordtype">void</span> ConvertUtcToLocalTimeL()
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<a name="l00039"></a>00039         {
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<a name="l00040"></a>00040         <span class="comment">// randomly choose a historical utc date/time, format it and print it out</span>
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<a name="l00041"></a>00041         TTime time(TDateTime(2001,EJuly,20,10,0,0,0));
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<a name="l00042"></a>00042         time.FormatL(dateTimeString, KDateTimeString);
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<a name="l00043"></a>00043         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KConsoleMessage,<span class="stringliteral">&quot;\n A random date / time in UTC is %S&quot;</span>);
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<a name="l00044"></a>00044         console-&gt;Printf(KConsoleMessage,&amp;dateTimeString);
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<a name="l00045"></a>00045
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<a name="l00046"></a>00046         <span class="comment">// now convert the date/time to local time for Australia/Sydney time zone</span>
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<a name="l00047"></a>00047         _LIT8(KAustraliaSydney,<span class="stringliteral">&quot;Australia/Sydney&quot;</span>);
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<a name="l00048"></a>00048         CTzId* timezoneId = CTzId::NewL(KAustraliaSydney);
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<a name="l00049"></a>00049         CleanupStack::PushL(timezoneId);
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<a name="l00050"></a>00050
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<a name="l00051"></a>00051         TInt results=tzServer.ConvertToLocalTime(time,*timezoneId);
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<a name="l00052"></a>00052         <span class="keywordflow">if</span>(results == KErrNone)
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<a name="l00053"></a>00053         <span class="comment">// conversion successful</span>
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<a name="l00054"></a>00054                 {
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<a name="l00055"></a>00055                 TBuf&lt;KMaxTimeZoneStringLength&gt; timeZoneString;
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<a name="l00056"></a>00056                 timeZoneString.Copy(timezoneId-&gt;TimeZoneNameID());
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<a name="l00057"></a>00057                 time.FormatL(dateTimeString, KDateTimeString);
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<a name="l00058"></a>00058                 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KConsoleMessage1,<span class="stringliteral">&quot;\n The date and time in the %S time zone is %S&quot;</span>);
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<a name="l00059"></a>00059                 console-&gt;Printf(KConsoleMessage1,&amp;timeZoneString, &amp;dateTimeString);
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<a name="l00060"></a>00060                 }
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<a name="l00061"></a>00061         <span class="keywordflow">else</span>
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<a name="l00062"></a>00062                 {
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<a name="l00063"></a>00063                 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KConsoleMessage2,<span class="stringliteral">&quot;\n Error %d while converting &quot;</span>);
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<a name="l00064"></a>00064                 console-&gt;Printf(KConsoleMessage2, results);
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<a name="l00065"></a>00065                 }
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<a name="l00066"></a>00066         CleanupStack::PopAndDestroy(timezoneId);
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<a name="l00067"></a>00067         }
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<a name="l00068"></a>00068
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<a name="l00069"></a>00069 <span class="comment">// convert the current local time for the system time zone </span>
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<a name="l00070"></a>00070 <span class="comment">// to local time for another time zone.</span>
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<a name="l00071"></a>00071 <span class="keyword">static</span> <span class="keywordtype">void</span> ConvertLocalToLocalTimeL()
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<a name="l00072"></a>00072         {
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<a name="l00073"></a>00073         <span class="comment">// first, get the current local time, format it and print it out</span>
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<a name="l00074"></a>00074         TTime time;
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<a name="l00075"></a>00075         time.HomeTime();
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<a name="l00076"></a>00076         time.FormatL(dateTimeString, KDateTimeString);
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<a name="l00077"></a>00077         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KConsoleMessage3,<span class="stringliteral">&quot;\n\n The current local time is %S&quot;</span>);
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<a name="l00078"></a>00078         console-&gt;Printf(KConsoleMessage3,&amp;dateTimeString);
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<a name="l00079"></a>00079         <span class="comment">// this is a 2 stage process - first convert the date/time to UTC.</span>
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<a name="l00080"></a>00080         <span class="comment">// No need to specify the time zone because </span>
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<a name="l00081"></a>00081         <span class="comment">// this function uses the current system time zone.</span>
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<a name="l00082"></a>00082         TInt results=tzServer.ConvertToUniversalTime(time);
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<a name="l00083"></a>00083         <span class="keywordflow">if</span>(results == KErrNone)
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<a name="l00084"></a>00084                 {
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<a name="l00085"></a>00085                 <span class="comment">//conversion successful</span>
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<a name="l00086"></a>00086                 time.FormatL(dateTimeString, KDateTimeString);
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<a name="l00087"></a>00087                 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KConsoleMessage4,<span class="stringliteral">&quot;\n The current UTC time is %S&quot;</span>);
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<a name="l00088"></a>00088                 console-&gt;Printf(KConsoleMessage4, &amp;dateTimeString);
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    99
 
<a name="l00089"></a>00089                 }
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<a name="l00090"></a>00090         <span class="keywordflow">else</span>
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<a name="l00091"></a>00091                 {
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<a name="l00092"></a>00092                 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KConsoleMessage5,<span class="stringliteral">&quot;\n Error %d while converting &quot;</span>);
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<a name="l00093"></a>00093                 console-&gt;Printf(KConsoleMessage5, results);
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<a name="l00094"></a>00094                 }
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<a name="l00095"></a>00095
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<a name="l00096"></a>00096         _LIT8(KAustraliaSydney,<span class="stringliteral">&quot;Australia/Sydney&quot;</span>);
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<a name="l00097"></a>00097         <span class="comment">// create a timezone ID object</span>
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<a name="l00098"></a>00098         CTzId* timezoneId = CTzId::NewL(KAustraliaSydney);
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<a name="l00099"></a>00099         CleanupStack::PushL(timezoneId);
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   110
 
<a name="l00100"></a>00100         <span class="comment">// convert UTC time to local time for Australia/Sydney</span>
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<a name="l00101"></a>00101         results=tzServer.ConvertToLocalTime(time,*timezoneId);
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<a name="l00102"></a>00102         <span class="keywordflow">if</span>(results == KErrNone)
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<a name="l00103"></a>00103                 <span class="comment">// conversion successful</span>
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<a name="l00104"></a>00104                 {
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<a name="l00105"></a>00105                 TBuf&lt;KMaxTimeZoneStringLength&gt; timeZoneString;
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<a name="l00106"></a>00106                 timeZoneString.Copy(timezoneId-&gt;TimeZoneNameID());
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<a name="l00107"></a>00107                 time.FormatL(dateTimeString, KDateTimeString);
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<a name="l00108"></a>00108                 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KConsoleMessage6,<span class="stringliteral">&quot;\n The current date and time in the %S time zone is %S&quot;</span>);
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<a name="l00109"></a>00109                 console-&gt;Printf(KConsoleMessage6,&amp;timeZoneString, &amp;dateTimeString);
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<a name="l00110"></a>00110                 }
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<a name="l00111"></a>00111         <span class="keywordflow">else</span>
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<a name="l00112"></a>00112                 {
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<a name="l00113"></a>00113                 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KConsoleMessage7,<span class="stringliteral">&quot;\n Error %d while converting &quot;</span>);
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<a name="l00114"></a>00114                 console-&gt;Printf(KConsoleMessage7, results);
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<a name="l00115"></a>00115                 }
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<a name="l00116"></a>00116         CleanupStack::PopAndDestroy(timezoneId);
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<a name="l00117"></a>00117         }
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<a name="l00118"></a>00118
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<a name="l00119"></a>00119 <span class="keyword">static</span> <span class="keywordtype">void</span> ConvertTimeL()
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<a name="l00120"></a>00120         <span class="comment">// Connects to the time zone server and does the conversion</span>
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<a name="l00121"></a>00121         {
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<a name="l00122"></a>00122         User::LeaveIfError(tzServer.Connect());
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<a name="l00123"></a>00123         CleanupClosePushL(tzServer);
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<a name="l00124"></a>00124         <span class="comment">//do the conversions</span>
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<a name="l00125"></a>00125         ConvertUtcToLocalTimeL();
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<a name="l00126"></a>00126         ConvertLocalToLocalTimeL();
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<a name="l00127"></a>00127         CleanupStack::PopAndDestroy(1); <span class="comment">// causes tzServer.Close() to be called</span>
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<a name="l00128"></a>00128         }
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<a name="l00129"></a>00129
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<a name="l00130"></a>00130 <span class="keyword">static</span> <span class="keywordtype">void</span> DoExampleL()
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<a name="l00131"></a>00131         {
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<a name="l00132"></a>00132         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtConsoleTitle, <span class="stringliteral">&quot;Time Zone example&quot;</span>);
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<a name="l00133"></a>00133         <span class="comment">// Create the console object to print the messages. </span>
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<a name="l00134"></a>00134         console = Console::NewL(KTxtConsoleTitle,TSize(KConsFullScreen,KConsFullScreen));
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<a name="l00135"></a>00135         CleanupStack::PushL(console);
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<a name="l00136"></a>00136         TRAPD(err,ConvertTimeL());
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<a name="l00137"></a>00137         <span class="keywordflow">if</span> (err)
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<a name="l00138"></a>00138                 {
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<a name="l00139"></a>00139                 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFailed,<span class="stringliteral">&quot;\n\nConversion failed: leave code=%d&quot;</span>);
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<a name="l00140"></a>00140                 console-&gt;Printf(KFailed, err);
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<a name="l00141"></a>00141                 }
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<a name="l00142"></a>00142         <span class="comment">// wait for user to press a key before destroying console</span>
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<a name="l00143"></a>00143         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KMsgPressAnyKey,<span class="stringliteral">&quot;\n\nPress any key to continue\n\n&quot;</span>);
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<a name="l00144"></a>00144         console-&gt;Printf(KMsgPressAnyKey);
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   155
 
<a name="l00145"></a>00145         console-&gt;Getch();
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<a name="l00146"></a>00146         CleanupStack::PopAndDestroy(console);
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<a name="l00147"></a>00147         }
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<a name="l00148"></a>00148
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<a name="l00149"></a>00149 <span class="comment">// Standard entry point function</span>
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<a name="l00150"></a>00150 TInt E32Main()
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<a name="l00151"></a>00151         {
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<a name="l00152"></a>00152         __UHEAP_MARK;
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<a name="l00153"></a>00153         <span class="comment">// Active scheduler required as this is a console app</span>
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<a name="l00154"></a>00154         CActiveScheduler* scheduler=<span class="keyword">new</span> CActiveScheduler;
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<a name="l00155"></a>00155         <span class="comment">// If active scheduler has been created, install it.</span>
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<a name="l00156"></a>00156         <span class="keywordflow">if</span> (scheduler)
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   167
 
<a name="l00157"></a>00157                 {
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<a name="l00158"></a>00158                 CActiveScheduler::Install(scheduler);
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<a name="l00159"></a>00159                 <span class="comment">// Cleanup stack needed</span>
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<a name="l00160"></a>00160                 CTrapCleanup* cleanup=CTrapCleanup::New();
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<a name="l00161"></a>00161                 <span class="keywordflow">if</span> (cleanup)
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<a name="l00162"></a>00162                         {
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<a name="l00163"></a>00163                         TRAP_IGNORE(DoExampleL());
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<a name="l00164"></a>00164                         <span class="keyword">delete</span> cleanup;
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<a name="l00165"></a>00165                         }
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<a name="l00166"></a>00166                 <span class="keyword">delete</span> scheduler;
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<a name="l00167"></a>00167                 }
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<a name="l00168"></a>00168         __UHEAP_MARKEND;
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<a name="l00169"></a>00169         <span class="keywordflow">return</span> KErrNone;
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<a name="l00170"></a>00170     }
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<a name="l00171"></a>00171
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<a name="l00172"></a>00172
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<a name="l00173"></a>00173
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</pre></div></div>
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<hr size="1"/><address style="text-align: right;"><small>Generated by&nbsp;
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<a href="http://www.doxygen.org/index.html">
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<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.2 </small></address>
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</body>
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</html>
MCL/sftools/depl/docscontent