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     2 <!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->

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     4 "Eclipse Public License v1.0" which accompanies this distribution, 

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     7     Nokia Corporation - initial contribution.

     8 Contributors: 

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    10 <!DOCTYPE task

    11   PUBLIC "-//OASIS//DTD DITA Task//EN" "task.dtd">

    12 <task id="GUID-E0D4EFAC-85E6-4EF6-B65C-1D1602E3A8FD" xml:lang="en"><title>Creating

    13 a User-Defined Time Zone from an Existing Time Zone</title><prolog><metadata><keywords/></metadata></prolog><taskbody>

    14 <context id="GUID-DC81EBEF-5CAC-418C-8269-1DC7D5F7DAEF">       <p>This tutorial

    15 describes how a client uses <codeph>CTzUserData</codeph> to manage user data. <codeph>CTzLocalizer</codeph> enables

    16 a client to get existing localized time zone names.  </p><p>The steps for

    17 a client to create a user-defined TZ from an existing TZ are described in

    18 the Procedure section. </p></context>

    19 <steps id="GUID-4DD07DEC-6017-4237-BE46-1D69E5FBD744-GENID-1-10-1-12-1-1-7-1-5-1-7-1-2-2">

    20 <step id="GUID-9A69E5AD-E938-4092-A8C2-CB65C37C8962-GENID-1-10-1-12-1-1-7-1-5-1-7-1-2-2-1"><cmd>Include the header

    21 files that contain the <codeph>CTzLocalizer</codeph> and <codeph>CTzUserData</codeph> classes. </cmd>

    22 </step>

    23 <step id="GUID-B6450767-B3BA-4228-9622-86FFBEE0C570"><cmd>Include a numeric time zone ID. This is supplied by the UI layer. </cmd>

    24 </step>

    25 <step id="GUID-7CA9FBF8-53CB-42F7-B1B8-C5ED84D8B26C"><cmd>Get the localized TZ names for the existing time zone (specified

    26 by the TZID) using <xref href="GUID-18853D2C-A730-38CD-AA3D-3B1F4E891950.dita#GUID-18853D2C-A730-38CD-AA3D-3B1F4E891950/GUID-447CD187-F8F6-3CD0-9928-3972C48DF79B"><apiname>CTzLocalizer::GetLocalizedTimeZoneL(TInt)</apiname></xref>.</cmd>

    27 </step>

    28 <step id="GUID-A788AC13-92D2-46AD-8701-94D18902519B"><cmd>Create a user-defined TZ names object using <xref href="GUID-C40593C4-D60C-39D5-8CB2-4B5D7BBE8ED4.dita#GUID-C40593C4-D60C-39D5-8CB2-4B5D7BBE8ED4/GUID-2E630EE3-1DDB-3F9D-A75B-2119E1B02EF8"><apiname>CTzUserNames::NewL()</apiname></xref>.</cmd>

    29 </step>

    30 <step id="GUID-CA6D706A-7AD6-4B9F-9D5E-CB1052915E29"><cmd>Connect to the TZ Server using <xref href="GUID-052221AD-916E-3E47-9510-AC0495A19A70.dita#GUID-052221AD-916E-3E47-9510-AC0495A19A70/GUID-375E314E-3B59-3722-AECA-1DC873507711"><apiname>RTz::Connect()</apiname></xref>.</cmd>

    31 </step>

    32 <step id="GUID-3F86505C-B032-4944-BAE5-947A3570036A"><cmd>Get all the TZ rules for the existing time zone using <xref href="GUID-052221AD-916E-3E47-9510-AC0495A19A70.dita#GUID-052221AD-916E-3E47-9510-AC0495A19A70/GUID-D7E83A8B-88DB-3A2E-B448-6BDB2123D1DE"><apiname>RTz::GetTimeZoneRulesL()</apiname></xref>. </cmd>

    33 </step>

    34 <step id="GUID-28FC7226-4AF4-4781-B2EE-B4CEAAE322EF"><cmd>Create the user-defined TZ using <xref href="GUID-1A53F535-96FC-387D-A02D-CAF8B1CEBCF1.dita#GUID-1A53F535-96FC-387D-A02D-CAF8B1CEBCF1/GUID-6D622414-0E99-39E6-8347-BC8CFD709D1D"><apiname>CTzUserData::CreateL()</apiname></xref>. </cmd>

    35 </step>

    36 </steps>

    37 <example><p>This is illustrated in the code example that follows.</p><codeblock xml:space="preserve">#include &lt;tzlocalizer.h&gt; // For CTzLocalizer etc.

    38 #include <tz.h> // For CTzUserData etc.

    39 #include <…>

    40 

    41 …

    42 

    43 // This numeric TZID would typically be supplied by the UI layer.

    44 TInt existingTzId = 1234;

    45 

    46 // Get localized TZ names for existing TZ.

    47 CTzLocalizer* tzLocalizer = CTzLocalizer::NewL();

    48 CTzLocalizedTimeZone* localizedTz = tzLocalizer-> GetLocalizedTimeZoneL( existingTzId );

    49 CTzLocalizedCity* localizedCity = tzLocalizer-> GetDefaultCityL( localizedTz );

    50 CTzLocalizedCityGroup* localizedGroup = tzLocalizer-> GetCityGroupL( localizedCity->GroupId() );

    51 

    52 // Create user-defined TZ names object.

    53 CTzUserNames* tzNames = CTzUserNames::NewL( localizedTz->StandardName(),

    54                                             localizedTz->ShortStandardName(),

    55                                             localizedTz->DaylightName(),

    56                                             localizedTz->ShortDaylightName(),

    57                                             localizedCity->Name(),

    58                                             localizedGroup ->Name() );

    59 

    60 // Connect to TZ Server.

    61 RTz tzServer;

    62 User::LeaveIfError( tzServer.Connect() );

    63 

    64 // Get the TZ rules for the existing TZ.

    65 CTzId* tzId = CTzId::NewL( existingTzId );

    66 TTime startTime( TDateTime( 0,EJanuary,0,0,0,0,0 ) );       // Get all the

    67 TTime endTime( TDateTime( 9999,EDecember,30,23,59,59,0 ) ); // TZ rules.

    68 CTzRules* tzRules = tzServer.GetTimeZoneRulesL( *tzId,

    69                                                 startTime,

    70                                                 endTime,

    71                                                 ETzUtcTimeReference );

    72 

    73 // Create user-defined TZ.

    74 CTzUserData* tzUserData = CTzUserData::NewL( tzServer );

    75 CTzId* userTzId = tzUserData->CreateL( *tzRules, *tzNames );

    76 

    77 …</codeblock></example>

    78 </taskbody><related-links>

    79 <link href="GUID-B92EB751-202D-4845-AF34-34DA7B36881F.dita"><linktext>Subscribe

    80 and Respond to TZ Data Changes </linktext></link>

    81 </related-links></task>