Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_multi_read2_8cpp_source.html
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
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<h1>examples/SysLibs/ResourceFiles/MultiRead2/MultiRead2.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>
<a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span>
<a name="l00003"></a>00003 <span class="comment">// This component and the accompanying materials are made available</span>
<a name="l00004"></a>00004 <span class="comment">// under the terms of "Eclipse Public License v1.0"</span>
<a name="l00005"></a>00005 <span class="comment">// which accompanies this distribution, and is available</span>
<a name="l00006"></a>00006 <span class="comment">// at the URL "http://www.eclipse.org/legal/epl-v10.html".</span>
<a name="l00007"></a>00007 <span class="comment">//</span>
<a name="l00008"></a>00008 <span class="comment">// Initial Contributors:</span>
<a name="l00009"></a>00009 <span class="comment">// Nokia Corporation - initial contribution.</span>
<a name="l00010"></a>00010 <span class="comment">//</span>
<a name="l00011"></a>00011 <span class="comment">// Contributors:</span>
<a name="l00012"></a>00012 <span class="comment">//</span>
<a name="l00013"></a>00013 <span class="comment">// Description:</span>
<a name="l00014"></a>00014 <span class="comment">// This example shows how to use multiple resource files with cross-referenced</span>
<a name="l00015"></a>00015 <span class="comment">// resources. It depends on the resource file created for the MultiRead1 project.</span>
<a name="l00016"></a>00016 <span class="comment">// It introduces a second resource file, MultiRead2, which contains an LLINK</span>
<a name="l00017"></a>00017 <span class="comment">// to a resource defined in the MultiRead1 project. The important point to note is</span>
<a name="l00018"></a>00018 <span class="comment">// that the effect of introducing this second resource file is minimal: just</span>
<a name="l00019"></a>00019 <span class="comment">// another #include file; and the logic in doExampleL() would be identical whether</span>
<a name="l00020"></a>00020 <span class="comment">// the LLINK pointed to another resource in the same file or a different file.</span>
<a name="l00021"></a>00021 <span class="comment">//</span>
<a name="l00022"></a>00022
<a name="l00023"></a>00023
<a name="l00024"></a>00024
<a name="l00025"></a>00025 <span class="preprocessor">#include "CommonToResourceFilesEx.h"</span>
<a name="l00026"></a>00026 <span class="preprocessor">#include <multiread2.rsg></span> <span class="comment">// user resources</span>
<a name="l00027"></a>00027 <span class="preprocessor">#include "MultiRead.h"</span> <span class="comment">// definition of multi-resource-reader class</span>
<a name="l00028"></a>00028
<a name="l00029"></a>00029 <span class="comment">// Do the example</span>
<a name="l00030"></a>00030 <span class="keywordtype">void</span> doExampleL()
<a name="l00031"></a>00031 {
<a name="l00032"></a>00032 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFormat,<span class="stringliteral">"%S\n"</span>);
<a name="l00033"></a>00033
<a name="l00034"></a>00034 <span class="comment">// allocate multi-reader</span>
<a name="l00035"></a>00035 <a class="code" href="class_c_multiple_resource_file_reader.html">CMultipleResourceFileReader</a>* multiReader =
<a name="l00036"></a>00036 CMultipleResourceFileReader::NewLC();
<a name="l00037"></a>00037
<a name="l00038"></a>00038 <span class="comment">// open resource file on the emulator(__WINS__ is defined for the Windows emulator)</span>
<a name="l00039"></a>00039 <span class="comment">// (leave if error)</span>
<a name="l00040"></a>00040 <span class="preprocessor"> #if defined(__WINS__)</span>
<a name="l00041"></a>00041 <span class="preprocessor"></span> <span class="comment">// add MultiRead1 version 23</span>
<a name="l00042"></a>00042 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KZSystemDataBasigbRsc,<span class="stringliteral">"Z:\\Resource\\apps\\MultiRead1.rsc"</span>);
<a name="l00043"></a>00043 multiReader->AddResourceFileL(KZSystemDataBasigbRsc,23);
<a name="l00044"></a>00044 <span class="comment">// add MultiRead2 version 17</span>
<a name="l00045"></a>00045 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KZSystemDataBasiguRsc,<span class="stringliteral">"Z:\\Resource\\apps\\MultiRead2.rsc"</span>);
<a name="l00046"></a>00046 multiReader->AddResourceFileL(KZSystemDataBasiguRsc,17);
<a name="l00047"></a>00047 <span class="preprocessor"> #endif</span>
<a name="l00048"></a>00048 <span class="preprocessor"></span>
<a name="l00049"></a>00049 <span class="comment">// open a resource file on the target phone</span>
<a name="l00050"></a>00050 <span class="comment">// ( __EPOC32__ is defined for all target hardware platforms regardless of processor type/hardware architecture)</span>
<a name="l00051"></a>00051 <span class="preprocessor"> #if defined(__EPOC32__)</span>
<a name="l00052"></a>00052 <span class="preprocessor"></span> <span class="comment">// add MultiRead1 version 23</span>
<a name="l00053"></a>00053 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KCSystemDataBasigbRsc,<span class="stringliteral">"Z:\\Resource\\apps\\MultiRead1.rsc"</span>);
<a name="l00054"></a>00054 multiReader->AddResourceFileL(KCSystemDataBasigbRsc,23);
<a name="l00055"></a>00055
<a name="l00056"></a>00056 <span class="comment">// add MultiRead2 version 17</span>
<a name="l00057"></a>00057 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KCSystemDataBasiguRsc,<span class="stringliteral">"Z:\\Resource\\apps\\MultiRead2.rsc"</span>);
<a name="l00058"></a>00058 multiReader->AddResourceFileL(KCSystemDataBasiguRsc,17);
<a name="l00059"></a>00059 <span class="preprocessor"> #endif</span>
<a name="l00060"></a>00060 <span class="preprocessor"></span>
<a name="l00061"></a>00061 <span class="comment">// read resource that returns a reference to another resource</span>
<a name="l00062"></a>00062 HBufC8* refBuffer=multiReader->AllocReadLC(R_USER_HELLOREF);
<a name="l00063"></a>00063 TResourceReader theReader;
<a name="l00064"></a>00064 theReader.SetBuffer(refBuffer);
<a name="l00065"></a>00065 TInt referencedId=theReader.ReadInt32(); <span class="comment">// treat resource as integer</span>
<a name="l00066"></a>00066 CleanupStack::PopAndDestroy(); <span class="comment">// refBuffer</span>
<a name="l00067"></a>00067 <span class="comment">// read the other resource</span>
<a name="l00068"></a>00068 HBufC8* dataBuffer=multiReader->AllocReadLC(referencedId);
<a name="l00069"></a>00069 TResourceReader reader;
<a name="l00070"></a>00070 reader.SetBuffer(dataBuffer);
<a name="l00071"></a>00071 TPtrC textdata = reader.ReadTPtrC();
<a name="l00072"></a>00072
<a name="l00073"></a>00073 <span class="comment">// write string to test console</span>
<a name="l00074"></a>00074 console->Printf(KFormat, &textdata);
<a name="l00075"></a>00075 <span class="comment">// clean up data buffer</span>
<a name="l00076"></a>00076 CleanupStack::PopAndDestroy(); <span class="comment">// finished with dataBuffer</span>
<a name="l00077"></a>00077 <span class="comment">// cleanup multi-reader</span>
<a name="l00078"></a>00078 CleanupStack::PopAndDestroy(); <span class="comment">// multi-reader</span>
<a name="l00079"></a>00079 }
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