Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_read_data_8cpp-source.html
author Dominic Pinkman <Dominic.Pinkman@Nokia.com>
Tue, 30 Mar 2010 11:42:04 +0100
changeset 4 4816d766a08a
parent 1 25a17d01db0c
permissions -rw-r--r--
Week 12 contribution of SDK documentation_content. See release notes for details. Fixes Bug 1892, Bug 1522, Bug 1520, Bug 394, Bug 1319, Bug 344, Bug 1897
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
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<title>TB10.1 Example Applications: examples/SysLibs/ResourceFiles/ReadData/ReadData.cpp Source File</title>
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<link href="doxygen.css" rel="stylesheet" type="text/css">
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<link href="tabs.css" rel="stylesheet" type="text/css">
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</head><body>
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<!-- Generated by Doxygen 1.5.3 -->
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<h1>examples/SysLibs/ResourceFiles/ReadData/ReadData.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (c) 2000-2009 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 "Eclipse Public License v1.0"</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 "http://www.eclipse.org/legal/epl-v10.html".</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 shows how to load data from resource files</span>
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<a name="l00015"></a>00015 <span class="comment">// into a class.</span>
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<a name="l00016"></a>00016 <span class="comment">// It loads the resource identified as resource FIRST from the resource</span>
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<a name="l00017"></a>00017 <span class="comment">// file. This is a simple resource of type DATA.</span>
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<a name="l00018"></a>00018 <span class="comment">// The example constructs a CResData object to hold the </span>
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<a name="l00019"></a>00019 <span class="comment">// individual items corresponding to the items in a </span>
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<a name="l00020"></a>00020 <span class="comment">// DATA struct.</span>
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<a name="l00021"></a>00021 <span class="comment">// The CResData object can also display the individual</span>
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<a name="l00022"></a>00022 <span class="comment">// items at the test console. All WORD, BYTE and LONG</span>
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<a name="l00023"></a>00023 <span class="comment">// are interpreted as signed values</span>
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<a name="l00024"></a>00024 <span class="comment">//</span>
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<a name="l00025"></a>00025 
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<a name="l00026"></a>00026 
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<a name="l00027"></a>00027         
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<a name="l00028"></a>00028 <span class="preprocessor">#include "CommonToResourceFilesEx.h"</span>
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<a name="l00029"></a>00029 
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<a name="l00030"></a>00030 <span class="preprocessor">#include "ReadData.h"</span>
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<a name="l00031"></a>00031 <span class="preprocessor">#include &lt;readdata.rsg&gt;</span>
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<a name="l00032"></a>00032 
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<a name="l00033"></a>00033                                 <span class="comment">// Construct a new CResData object and place </span>
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<a name="l00034"></a>00034                                 <span class="comment">// on the cleanup stack</span>
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<a name="l00035"></a>00035 <a class="code" href="class_c_res_data.html">CResData</a>* <a class="code" href="class_c_res_data.html#071910f1631c9801ea561b62f4e6ea53">CResData::NewLC</a>(TResourceReader&amp; aReader)
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<a name="l00036"></a>00036         {
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<a name="l00037"></a>00037         <a class="code" href="class_c_res_data.html">CResData</a>* <span class="keyword">self</span>=<span class="keyword">new</span> (ELeave) <a class="code" href="class_c_res_data.html">CResData</a>;
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<a name="l00038"></a>00038         CleanupStack::PushL(<span class="keyword">self</span>);
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<a name="l00039"></a>00039         <span class="keyword">self</span>-&gt;ConstructL(aReader);
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<a name="l00040"></a>00040         <span class="keywordflow">return</span> <span class="keyword">self</span>;
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<a name="l00041"></a>00041         }
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<a name="l00042"></a>00042 
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<a name="l00043"></a>00043 
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<a name="l00044"></a>00044                                 <span class="comment">// Complete the construction of the </span>
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<a name="l00045"></a>00045                                 <span class="comment">// CResData object using the supplied</span>
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<a name="l00046"></a>00046                                 <span class="comment">// reource reader representing the resource data.</span>
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<a name="l00047"></a>00047                                 <span class="comment">// The structure of the data is assumed to be</span>
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<a name="l00048"></a>00048                                 <span class="comment">// defined by the resource struct DATA in "ReadData.rh"</span>
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<a name="l00049"></a>00049 <span class="keywordtype">void</span> CResData::ConstructL(TResourceReader&amp; aReader)
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<a name="l00050"></a>00050         {
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<a name="l00051"></a>00051                                 <span class="comment">// Interpret next bytes as a TInt16</span>
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<a name="l00052"></a>00052         iWrd   = aReader.ReadInt16();
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<a name="l00053"></a>00053                         
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<a name="l00054"></a>00054                                 <span class="comment">// Interpret next bytes as a TInt16</span>
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<a name="l00055"></a>00055         iFlags = aReader.ReadInt16();
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<a name="l00056"></a>00056                                         
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<a name="l00057"></a>00057                                 <span class="comment">// Interpret next bytes as a TInt32</span>
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<a name="l00058"></a>00058         iLng   = aReader.ReadInt32();
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<a name="l00059"></a>00059 
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<a name="l00060"></a>00060         iTxt    = aReader.ReadTPtrC();
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<a name="l00061"></a>00061                                 <span class="comment">// Interpret the next byte as the length</span>
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<a name="l00062"></a>00062                                 <span class="comment">// of text. The text itself follows</span>
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<a name="l00063"></a>00063                                 <span class="comment">// this byte.</span>
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<a name="l00064"></a>00064         iLtxt  = aReader.ReadHBufC16L(); 
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<a name="l00065"></a>00065                                 <span class="comment">// Interpret the next byte as a TInt8</span>
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<a name="l00066"></a>00066         iByt   = aReader.ReadInt8();
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<a name="l00067"></a>00067         
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<a name="l00068"></a>00068                                 <span class="comment">// Interpret next bytes as a TReal</span>
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<a name="l00069"></a>00069         iDbl   = aReader.ReadReal64();
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<a name="l00070"></a>00070                         
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<a name="l00071"></a>00071         }
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<a name="l00072"></a>00072 
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<a name="l00073"></a>00073 
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<a name="l00074"></a>00074                                 <span class="comment">// Destructor needs to ensure that </span>
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<a name="l00075"></a>00075                                 <span class="comment">// the HBufC descriptor iLtxt is destroyed.</span>
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<a name="l00076"></a>00076 <a class="code" href="class_c_res_data.html#ba44562a40b138e5c2d1c3d1563e51a2">CResData::~CResData</a>()
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<a name="l00077"></a>00077         {
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<a name="l00078"></a>00078         <span class="keywordflow">if</span> (iLtxt)
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<a name="l00079"></a>00079                 <span class="keyword">delete</span> iLtxt;
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<a name="l00080"></a>00080         }
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<a name="l00081"></a>00081 
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<a name="l00082"></a>00082 
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<a name="l00083"></a>00083                                 <span class="comment">// Show the individual resource itens</span>
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<a name="l00084"></a>00084                                 <span class="comment">// at the test console.</span>
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<a name="l00085"></a>00085 <span class="keywordtype">void</span> <a class="code" href="class_c_res_data.html#55c19ec04a422d7072242e9e2a37c60b">CResData::ShowData</a>(<span class="keyword">const</span> TInt aStructNum)
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<a name="l00086"></a>00086         {
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<a name="l00087"></a>00087         _LIT(KResourceItems,<span class="stringliteral">"Resource items (struct #%d):\n"</span>);
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<a name="l00088"></a>00088         _LIT(KResourceItems2,<span class="stringliteral">"Resource items:\n"</span>);
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<a name="l00089"></a>00089         _LIT(KWrdFormat,<span class="stringliteral">"wrd   = %d\n"</span>);
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<a name="l00090"></a>00090         _LIT(KFlags,<span class="stringliteral">"flags = "</span>);
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<a name="l00091"></a>00091         _LIT(KEFlagItem,<span class="stringliteral">"EFlagItem"</span>);
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<a name="l00092"></a>00092         _LIT(KNewline,<span class="stringliteral">"\n"</span>);
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<a name="l00093"></a>00093         _LIT(KLngFormat,<span class="stringliteral">"lng   = %d\n"</span>);
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<a name="l00094"></a>00094         _LIT(KBytFormat,<span class="stringliteral">"byt   = %d\n"</span>);
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<a name="l00095"></a>00095         _LIT(KDblFormat,<span class="stringliteral">"dbl   = %S\n"</span>);
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<a name="l00096"></a>00096         _LIT(KTxtFormat,<span class="stringliteral">"txt   = %S\n"</span>);
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<a name="l00097"></a>00097         _LIT(KLtxtFormat,<span class="stringliteral">"ltxt  = %S\n"</span>);
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<a name="l00098"></a>00098 
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<a name="l00099"></a>00099         TBuf&lt;16&gt;        temp;
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<a name="l00100"></a>00100         TRealFormat     format(16,2);
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<a name="l00101"></a>00101 
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<a name="l00102"></a>00102         <span class="keywordflow">if</span> (aStructNum)
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<a name="l00103"></a>00103                 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KResourceItems,
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<a name="l00104"></a>00104                                                    aStructNum
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<a name="l00105"></a>00105                                                   );
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<a name="l00106"></a>00106         <span class="keywordflow">else</span> 
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<a name="l00107"></a>00107                 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KResourceItems2);
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<a name="l00108"></a>00108 
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<a name="l00109"></a>00109                                 <span class="comment">//  * * * * * * * * *</span>
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<a name="l00110"></a>00110         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KWrdFormat,iWrd);
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<a name="l00111"></a>00111 
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<a name="l00112"></a>00112                                 <span class="comment">//  * * * * * * * * *</span>
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<a name="l00113"></a>00113                 _LIT(KLtxt,<span class="stringliteral">"ltxt  = \n"</span>);
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<a name="l00114"></a>00114         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KFlags);
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<a name="l00115"></a>00115         TUint           mask = 1;
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<a name="l00116"></a>00116         TBuf&lt;256&gt;       temp2;
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<a name="l00117"></a>00117         <span class="keywordflow">for</span> (TInt ii = 0 ; ii &lt; 16; ii++)
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<a name="l00118"></a>00118                 {
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<a name="l00119"></a>00119                 <span class="keywordflow">if</span> (iFlags &amp; mask)
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<a name="l00120"></a>00120                         {
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<a name="l00121"></a>00121                         temp2.Append(KEFlagItem);
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<a name="l00122"></a>00122                         temp2.AppendNum(ii+1);
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<a name="l00123"></a>00123                         temp2.Append(<span class="charliteral">'+'</span>);    
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<a name="l00124"></a>00124                         }
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<a name="l00125"></a>00125                 mask &lt;&lt;= 1;
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<a name="l00126"></a>00126                 }
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<a name="l00127"></a>00127         <span class="keywordflow">if</span> (temp2.Length())
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<a name="l00128"></a>00128                 temp2.SetLength(temp2.Length()-1);
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<a name="l00129"></a>00129         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(temp2);
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<a name="l00130"></a>00130         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KNewline);
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<a name="l00131"></a>00131                 
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<a name="l00132"></a>00132                                 <span class="comment">//  * * * * * * * * *</span>
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<a name="l00133"></a>00133         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KLngFormat,iLng);
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<a name="l00134"></a>00134                                 <span class="comment">//  * * * * * * * * *</span>
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<a name="l00135"></a>00135         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KTxtFormat,&amp;iTxt);
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<a name="l00136"></a>00136 
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<a name="l00137"></a>00137                                 <span class="comment">//  * * * * * * * * *   </span>
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<a name="l00138"></a>00138         <span class="keywordflow">if</span> (iLtxt)
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<a name="l00139"></a>00139                 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KLtxtFormat,iLtxt);
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<a name="l00140"></a>00140         <span class="keywordflow">else</span>
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<a name="l00141"></a>00141             <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KLtxt);
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<a name="l00142"></a>00142                                 <span class="comment">//  * * * * * * * * *</span>
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<a name="l00143"></a>00143         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KBytFormat,iByt);
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<a name="l00144"></a>00144 
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<a name="l00145"></a>00145                                 <span class="comment">//  * * * * * * * * *</span>
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<a name="l00146"></a>00146         temp.Num(iDbl,format);
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<a name="l00147"></a>00147         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KDblFormat,&amp;temp);
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<a name="l00148"></a>00148                                 
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<a name="l00149"></a>00149         }
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<a name="l00152"></a>00152 
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<a name="l00153"></a>00153 <span class="comment">// Do the example(s)</span>
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<a name="l00154"></a>00154 
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<a name="l00155"></a>00155 LOCAL_C <span class="keywordtype">void</span> doExampleL()
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<a name="l00156"></a>00156     {
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<a name="l00157"></a>00157                 <span class="comment">// Declare a resource file</span>
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<a name="l00158"></a>00158         RResourceFile resourceFile;
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<a name="l00159"></a>00159         
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<a name="l00160"></a>00160                 <span class="comment">// open resource file on the emulator(__WINS__  is defined for the Windows emulator)</span>
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<a name="l00161"></a>00161                 <span class="comment">//(leave if error)</span>
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<a name="l00162"></a>00162 <span class="preprocessor">        #if defined(__WINS__)</span>
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<a name="l00163"></a>00163 <span class="preprocessor"></span>        _LIT(KZSystemDataRsc,<span class="stringliteral">"Z:\\Resource\\Apps\\ReadData.rsc"</span>);
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<a name="l00164"></a>00164         resourceFile.OpenL(fsSession, KZSystemDataRsc);
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<a name="l00165"></a>00165 <span class="preprocessor">        #endif</span>
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<a name="l00166"></a>00166 <span class="preprocessor"></span>
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<a name="l00167"></a>00167                 <span class="comment">// open a resource file on the target phone</span>
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<a name="l00168"></a>00168                 <span class="comment">// ( __EPOC32__ is defined for all target hardware platforms regardless of processor type/hardware architecture)</span>
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<a name="l00169"></a>00169 <span class="preprocessor">        #if defined(__EPOC32__)</span>
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<a name="l00170"></a>00170 <span class="preprocessor"></span>        _LIT(KCSystemDataRsc,<span class="stringliteral">"Z:\\Resource\\Apps\\ReadData.rsc"</span>);
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<a name="l00171"></a>00171         resourceFile.OpenL(fsSession, KCSystemDataRsc);
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<a name="l00172"></a>00172 <span class="preprocessor">        #endif</span>
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<a name="l00173"></a>00173 <span class="preprocessor"></span>        
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<a name="l00174"></a>00174                 <span class="comment">// Read the first resource &amp; construct a resource reader</span>
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<a name="l00175"></a>00175         HBufC8* res = resourceFile.AllocReadLC(FIRST);
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<a name="l00176"></a>00176 
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<a name="l00177"></a>00177         TResourceReader theReader;
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<a name="l00178"></a>00178         theReader.SetBuffer(res);
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<a name="l00179"></a>00179 
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<a name="l00180"></a>00180                 <span class="comment">// construct a CResData object to contain</span>
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<a name="l00181"></a>00181                 <span class="comment">// the simple resource of type DATA.</span>
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<a name="l00182"></a>00182         <a class="code" href="class_c_res_data.html">CResData</a>* resData = <a class="code" href="class_c_res_data.html#071910f1631c9801ea561b62f4e6ea53">CResData::NewLC</a>(theReader);
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<a name="l00183"></a>00183 
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<a name="l00184"></a>00184                 <span class="comment">// Can now remove resData from the cleanup stack</span>
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<a name="l00185"></a>00185         CleanupStack::Pop();
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<a name="l00186"></a>00186 
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<a name="l00187"></a>00187                 <span class="comment">// finished with res</span>
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<a name="l00188"></a>00188         CleanupStack::PopAndDestroy(); 
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<a name="l00189"></a>00189 
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<a name="l00190"></a>00190                 <span class="comment">// display data</span>
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<a name="l00191"></a>00191         resData-&gt;<a class="code" href="class_c_res_data.html#55c19ec04a422d7072242e9e2a37c60b">ShowData</a>();
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<a name="l00192"></a>00192 
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<a name="l00193"></a>00193                 <span class="comment">// destroy the CResData </span>
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<a name="l00194"></a>00194         <span class="keyword">delete</span> resData;
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<a name="l00195"></a>00195 
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<a name="l00196"></a>00196                 <span class="comment">// finished with resource file, so close it.</span>
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<a name="l00197"></a>00197         resourceFile.Close();
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<a name="l00198"></a>00198         }
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<a name="l00199"></a>00199          
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<a name="l00200"></a>00200 
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</pre></div><hr size="1"><address style="text-align: right;"><small>Generated on Thu Jan 21 10:33:00 2010 for TB10.1 Example Applications by&nbsp;
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<a href="http://www.doxygen.org/index.html">
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<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.3 </small></address>
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</body>
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</html>