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Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/rbufexample_8cpp-source.html
author Dominic Pinkman <Dominic.Pinkman@Nokia.com>
Thu, 11 Mar 2010 15:24:26 +0000
changeset 2 ebc84c812384
parent 1 25a17d01db0c
permissions -rw-r--r--
week 10 bug fix submission: Bug 1892, Bug 1897, Bug 1319. Also 3 or 4 documents were found to contain code blocks with SFL, which has been fixed. Partial fix for broken links, links to Forum Nokia, and the 'Symbian platform' terminology issues.
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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/Base/BufsAndStrings/rbufexample/rbufexample.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/Base/BufsAndStrings/rbufexample/rbufexample.cpp</h1><a href="rbufexample_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (c) 2008-2009 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 program demonstrates how to use the resizable buffer descriptor class RBuf.</span>
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<a name="l00015"></a>00015 <span class="comment">//</span>
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<a name="l00016"></a>00016
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<a name="l00017"></a>00017
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<a name="l00018"></a>00018
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<a name="l00022"></a>00022 <span class="preprocessor">#include "rbufexample.h"</span>
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<a name="l00023"></a>00023
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<a name="l00024"></a><a class="code" href="rbufexample_8cpp.html#aa9f486ebd20badddb8451883a82e763">00024</a> <span class="keyword">const</span> TInt <a class="code" href="rbufexample_8cpp.html#aa9f486ebd20badddb8451883a82e763">KLargeBufSize</a> = 15;
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<a name="l00025"></a><a class="code" href="rbufexample_8cpp.html#daf0758eb2344d655702792acb8ced64">00025</a> <span class="keyword">const</span> TInt <a class="code" href="rbufexample_8cpp.html#daf0758eb2344d655702792acb8ced64">KSmallBufSize</a> = 3;
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<a name="l00026"></a><a class="code" href="rbufexample_8cpp.html#9b8374bb15a2980f3b92ac9a002e8cf5">00026</a> <span class="keyword">const</span> TInt <a class="code" href="rbufexample_8cpp.html#9b8374bb15a2980f3b92ac9a002e8cf5">KMedBufSize</a> = 7;
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<a name="l00027"></a>00027
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<a name="l00028"></a>00028 _LIT(KFailed, <span class="stringliteral">"\n Error occurred"</span>);
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<a name="l00029"></a>00029 _LIT(KPressAKey, <span class="stringliteral">"\n\n Press any key to continue the example\n"</span>);
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<a name="l00030"></a>00030 _LIT(<a class="code" href="localeupdate_8h.html#c930ea536278a3ea6eca1814afcd7897">KLength</a>,<span class="stringliteral">"\n  Length= %d"</span>);
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<a name="l00031"></a>00031 _LIT(KMaxLength,<span class="stringliteral">"\n  MaxLength= %d"</span>);
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<a name="l00032"></a>00032 _LIT(KBuffer1,<span class="stringliteral">"11111"</span>);
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<a name="l00033"></a>00033 _LIT(KBuffer2,<span class="stringliteral">"22222"</span>);
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<a name="l00034"></a>00034
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<a name="l00038"></a>00038 CRBufExample::CRBufExample()
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<a name="l00039"></a>00039         {
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<a name="l00040"></a>00040         }
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<a name="l00041"></a>00041
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<a name="l00042"></a>00042 <span class="keywordtype">void</span> CRBufExample::ConstructL()
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<a name="l00043"></a>00043         {
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<a name="l00044"></a>00044         _LIT(KTitle,<span class="stringliteral">" RBuf Example"</span>);
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<a name="l00045"></a>00045         iConsole = Console::NewL(KTitle, TSize(KConsFullScreen, KConsFullScreen));
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<a name="l00046"></a>00046
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<a name="l00047"></a>00047         _LIT(KWelcome,<span class="stringliteral">" Welcome to the RBuf example application"</span>);
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<a name="l00048"></a>00048         iConsole-&gt;Printf(KWelcome);
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<a name="l00049"></a>00049
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<a name="l00050"></a>00050         _LIT(KPressAKeyMsg, <span class="stringliteral">"\n\n Press any key to step through the example\n"</span>);
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<a name="l00051"></a>00051         iConsole-&gt;Printf(KPressAKeyMsg );
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<a name="l00052"></a>00052         iConsole-&gt;Getch();
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<a name="l00053"></a>00053         }
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<a name="l00054"></a>00054
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<a name="l00058"></a><a class="code" href="class_c_r_buf_example.html#70b4f8db8bcc7c567f48594d2f7371c5">00058</a> <a class="code" href="class_c_r_buf_example.html#70b4f8db8bcc7c567f48594d2f7371c5">CRBufExample::~CRBufExample</a>()
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<a name="l00059"></a>00059         {
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<a name="l00060"></a>00060         <span class="keyword">delete</span> iConsole;
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<a name="l00061"></a>00061         }
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<a name="l00062"></a>00062
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<a name="l00067"></a><a class="code" href="class_c_r_buf_example.html#8bd254efe876ae2b5138f79a101272d6">00067</a> <a class="code" href="class_c_r_buf_example.html">CRBufExample</a>* <a class="code" href="class_c_r_buf_example.html#8bd254efe876ae2b5138f79a101272d6">CRBufExample::NewL</a>()
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<a name="l00068"></a>00068         {
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<a name="l00069"></a>00069         <a class="code" href="class_c_r_buf_example.html">CRBufExample</a>* <span class="keyword">self</span>=<span class="keyword">new</span>(ELeave)<a class="code" href="class_c_r_buf_example.html">CRBufExample</a>();
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<a name="l00070"></a>00070         CleanupStack::PushL(<span class="keyword">self</span>);
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<a name="l00071"></a>00071         <span class="keyword">self</span>-&gt;ConstructL();
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<a name="l00072"></a>00072         CleanupStack::Pop(<span class="keyword">self</span>);
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<a name="l00073"></a>00073         <span class="keywordflow">return</span> <span class="keyword">self</span>;
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<a name="l00074"></a>00074         }
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<a name="l00075"></a>00075
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<a name="l00079"></a><a class="code" href="class_c_r_buf_example.html#57856a0e131215ccef45af713f5aad5f">00079</a> <span class="keywordtype">void</span> <a class="code" href="class_c_r_buf_example.html#57856a0e131215ccef45af713f5aad5f">CRBufExample::CreateRBufL</a>()
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<a name="l00080"></a>00080         {
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<a name="l00081"></a>00081         _LIT(KCreate,<span class="stringliteral">"\n Creating an RBuf: \n"</span>);
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<a name="l00082"></a>00082
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<a name="l00083"></a>00083         iConsole-&gt;Printf(KCreate);
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<a name="l00084"></a>00084
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<a name="l00085"></a>00085         RBuf buf;
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<a name="l00086"></a>00086
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<a name="l00087"></a>00087         <span class="comment">// Create an empty buffer descriptor</span>
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<a name="l00088"></a>00088         <span class="comment">// The length is zero, the maxlength is 3</span>
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<a name="l00089"></a>00089         User::LeaveIfError(buf.Create(<a class="code" href="rbufexample_8cpp.html#daf0758eb2344d655702792acb8ced64">KSmallBufSize</a>));
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<a name="l00090"></a>00090         CleanupClosePushL(buf);
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<a name="l00091"></a>00091
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<a name="l00092"></a>00092         <span class="comment">// Get the length of the buffer</span>
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<a name="l00093"></a>00093         TInt length= buf.Length();
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<a name="l00094"></a>00094
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<a name="l00095"></a>00095         <span class="comment">// Get the maximum length of the buffer</span>
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<a name="l00096"></a>00096         TInt maxLength= buf.MaxLength();
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<a name="l00097"></a>00097
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<a name="l00098"></a>00098         <span class="comment">// Check that length and maximum length are not equal because it was created using Create()</span>
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<a name="l00099"></a>00099         <span class="keywordflow">if</span>(length != maxLength)
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<a name="l00100"></a>00100                 {
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<a name="l00101"></a>00101                 _LIT(KUsingCreate, <span class="stringliteral">"\n Using Create() API: "</span>);
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<a name="l00102"></a>00102                 iConsole-&gt;Printf(KUsingCreate);
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<a name="l00103"></a>00103                 iConsole-&gt;Printf(<a class="code" href="localeupdate_8h.html#c930ea536278a3ea6eca1814afcd7897">KLength</a>, length);
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<a name="l00104"></a>00104                 iConsole-&gt;Printf(KMaxLength, maxLength);
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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                 {
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<a name="l00108"></a>00108                 iConsole-&gt;Printf(KFailed);
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<a name="l00109"></a>00109                 }
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<a name="l00110"></a>00110
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<a name="l00111"></a>00111         <span class="comment">// Deallocate the memory assigned to the buffer</span>
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<a name="l00112"></a>00112         CleanupStack::PopAndDestroy(&amp;buf);
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<a name="l00113"></a>00113
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<a name="l00114"></a>00114         <span class="comment">// Create buffer descriptor</span>
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<a name="l00115"></a>00115         <span class="comment">// The length is 3, the maxlength is 3</span>
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<a name="l00116"></a>00116         User::LeaveIfError(buf.CreateMax(<a class="code" href="rbufexample_8cpp.html#daf0758eb2344d655702792acb8ced64">KSmallBufSize</a>));
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<a name="l00117"></a>00117         CleanupClosePushL(buf);
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<a name="l00118"></a>00118
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<a name="l00119"></a>00119         <span class="comment">// Get the length of the buffer.</span>
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<a name="l00120"></a>00120         length= buf.Length();
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<a name="l00121"></a>00121
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<a name="l00122"></a>00122         <span class="comment">// Get the maximum length of the buffer.</span>
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<a name="l00123"></a>00123         maxLength=buf.MaxLength();
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<a name="l00124"></a>00124
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<a name="l00125"></a>00125         <span class="comment">// Check that length and maximum length are equal because it was created using CreateMax().</span>
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<a name="l00126"></a>00126         <span class="keywordflow">if</span>(length == maxLength)
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<a name="l00127"></a>00127                 {
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<a name="l00128"></a>00128                 _LIT(KCreateInAdvance, <span class="stringliteral">"\n Using CreateMax() API: "</span>);
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<a name="l00129"></a>00129                 iConsole-&gt;Printf(KCreateInAdvance);
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<a name="l00130"></a>00130                 iConsole-&gt;Printf(<a class="code" href="localeupdate_8h.html#c930ea536278a3ea6eca1814afcd7897">KLength</a>, length);
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<a name="l00131"></a>00131                 iConsole-&gt;Printf(KMaxLength, maxLength);
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<a name="l00132"></a>00132                 }
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<a name="l00133"></a>00133         <span class="keywordflow">else</span>
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<a name="l00134"></a>00134                 {
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<a name="l00135"></a>00135                 iConsole-&gt;Printf(KFailed);
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<a name="l00136"></a>00136                 }
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<a name="l00137"></a>00137
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<a name="l00138"></a>00138         <span class="comment">// Deallocate the memory assigned to the buffer.</span>
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<a name="l00139"></a>00139         CleanupStack::PopAndDestroy(&amp;buf);
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<a name="l00140"></a>00140         }
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<a name="l00141"></a>00141
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<a name="l00145"></a><a class="code" href="class_c_r_buf_example.html#c33844cce7df0b1c2a57f6edc3ac0906">00145</a> <span class="keywordtype">void</span> <a class="code" href="class_c_r_buf_example.html#c33844cce7df0b1c2a57f6edc3ac0906">CRBufExample::CreateRBufFromExistingDesL</a>()
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<a name="l00146"></a>00146         {
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<a name="l00147"></a>00147         RBuf buf;
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<a name="l00148"></a>00148
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<a name="l00149"></a>00149         <span class="comment">// Create a buffer descriptor, initialised with some text</span>
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<a name="l00150"></a>00150         buf.CreateL(KBuffer1);
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<a name="l00151"></a>00151
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<a name="l00152"></a>00152         _LIT(KCreateFromExistingDes, <span class="stringliteral">"\n From an existing descriptor "</span>);
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<a name="l00153"></a>00153         iConsole-&gt;Printf(KCreateFromExistingDes);
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<a name="l00154"></a>00154
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<a name="l00155"></a>00155         <span class="comment">// Deallocates the memory assigned to the buffer</span>
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<a name="l00156"></a>00156         buf.Close();
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<a name="l00157"></a>00157         }
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<a name="l00158"></a>00158
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<a name="l00162"></a><a class="code" href="class_c_r_buf_example.html#398c08c23d056f1705f82ea5117c07e8">00162</a> <span class="keywordtype">void</span> <a class="code" href="class_c_r_buf_example.html#398c08c23d056f1705f82ea5117c07e8">CRBufExample::CreateRBufFromHBufCL</a>()
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<a name="l00163"></a>00163         {
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<a name="l00164"></a>00164         <span class="comment">// Create a pointer to a heap descriptor</span>
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<a name="l00165"></a>00165         HBufC* hptr = HBufC::NewL(KBuffer1().Length());
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<a name="l00166"></a>00166
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<a name="l00167"></a>00167         <span class="comment">// Assign some data to the heap descriptor.</span>
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<a name="l00168"></a>00168         *hptr = KBuffer1;
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<a name="l00169"></a>00169
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<a name="l00170"></a>00170         RBuf buf;
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<a name="l00171"></a>00171
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<a name="l00172"></a>00172         <span class="comment">// Assign the HBufC to the buffer. This transfers ownership of the heap descriptor.</span>
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<a name="l00173"></a>00173         buf.Assign(hptr);
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<a name="l00174"></a>00174
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<a name="l00175"></a>00175         _LIT(KCreateFromHBufC, <span class="stringliteral">"\n From HBufC "</span>);
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<a name="l00176"></a>00176         iConsole-&gt;Printf(KCreateFromHBufC);
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<a name="l00177"></a>00177
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<a name="l00178"></a>00178         <span class="comment">// Deallocate the memory assigned to the buffer. </span>
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<a name="l00179"></a>00179         <span class="comment">// There is no need to free the HBufC because Assign() transferred ownership.</span>
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<a name="l00180"></a>00180         buf.Close();
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<a name="l00181"></a>00181         }
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<a name="l00182"></a>00182
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<a name="l00186"></a><a class="code" href="class_c_r_buf_example.html#0a4263b7828a5214748786dae31e66b7">00186</a> <span class="keywordtype">void</span> <a class="code" href="class_c_r_buf_example.html#0a4263b7828a5214748786dae31e66b7">CRBufExample::CreateRBufFromAnotherRBufL</a>()
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<a name="l00187"></a>00187         {
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<a name="l00188"></a>00188         RBuf buf;
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<a name="l00189"></a>00189
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<a name="l00190"></a>00190         <span class="comment">// Create a buffer descriptor, initialised with some text</span>
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<a name="l00191"></a>00191         User::LeaveIfError(buf.Create(KBuffer1));
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<a name="l00192"></a>00192
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<a name="l00193"></a>00193         RBuf targetBuf;
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<a name="l00194"></a>00194
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<a name="l00195"></a>00195         <span class="comment">// Assign one buffer to the other. </span>
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<a name="l00196"></a>00196         <span class="comment">// Transfers ownership of the source buffer's memory to the target buffer.</span>
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<a name="l00197"></a>00197         <span class="comment">// Note that targetBuf should have no memory allocated to it beforehand</span>
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<a name="l00198"></a>00198         <span class="comment">// otherwise a memory leak will occur.</span>
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<a name="l00199"></a>00199         targetBuf.Assign(buf);
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<a name="l00200"></a>00200
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<a name="l00201"></a>00201         _LIT(KCreateFromAnotherRBuf, <span class="stringliteral">"\n From another RBuf"</span>);
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<a name="l00202"></a>00202         iConsole-&gt;Printf(KCreateFromAnotherRBuf);
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<a name="l00203"></a>00203
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<a name="l00204"></a>00204         <span class="comment">// Deallocate the memory assigned to the buffer.</span>
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<a name="l00205"></a>00205         targetBuf.Close();
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<a name="l00206"></a>00206         }
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<a name="l00207"></a>00207
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<a name="l00211"></a><a class="code" href="class_c_r_buf_example.html#15c0b84f3b6704d60b1e4f3ff50f590b">00211</a> <span class="keywordtype">void</span> <a class="code" href="class_c_r_buf_example.html#15c0b84f3b6704d60b1e4f3ff50f590b">CRBufExample::CreateRBufUsingRReadStreamL</a>()
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<a name="l00212"></a>00212         {
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<a name="l00213"></a>00213         <span class="comment">// A handle to a file server session. </span>
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<a name="l00214"></a>00214         <span class="comment">// This is used to create and write to/read from a file.</span>
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<a name="l00215"></a>00215         RFs fs;
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<a name="l00216"></a>00216
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<a name="l00217"></a>00217         <span class="comment">// Connect to the file server.</span>
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<a name="l00218"></a>00218         User::LeaveIfError(fs.Connect());
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<a name="l00219"></a>00219         CleanupClosePushL(fs);
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<a name="l00220"></a>00220         <span class="comment">// Create the session path at the process's private path on the system drive.</span>
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<a name="l00221"></a>00221         User::LeaveIfError(fs.CreatePrivatePath(RFs::GetSystemDrive()));
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<a name="l00222"></a>00222
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<a name="l00223"></a>00223         <span class="comment">// Set the session path to point to the process's private path on the system drive.</span>
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<a name="l00224"></a>00224         User::LeaveIfError(fs.SetSessionToPrivate(RFs::GetSystemDrive()));
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<a name="l00225"></a>00225
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<a name="l00226"></a>00226         <span class="comment">// Declare a file stream to write to.</span>
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<a name="l00227"></a>00227         RFileWriteStream wStream;
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<a name="l00228"></a>00228
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<a name="l00229"></a>00229         _LIT(KFileName,<span class="stringliteral">"stream.dat"</span>);
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<a name="l00230"></a>00230
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<a name="l00231"></a>00231         <span class="comment">// Create a file, associates it with the stream, and prepares the stream for writing.</span>
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<a name="l00232"></a>00232         User::LeaveIfError(wStream.Replace(fs, KFileName, EFileWrite));
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<a name="l00233"></a>00233         CleanupClosePushL(wStream);
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<a name="l00234"></a>00234
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<a name="l00235"></a>00235         _LIT(KText, <span class="stringliteral">"RBuf Example"</span>);
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<a name="l00236"></a>00236
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<a name="l00237"></a>00237         <span class="comment">// Write some text to the stream.</span>
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<a name="l00238"></a>00238         wStream &lt;&lt; KText();
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<a name="l00239"></a>00239         wStream.CommitL();
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<a name="l00240"></a>00240         CleanupStack::PopAndDestroy(&amp;wStream);
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<a name="l00241"></a>00241
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<a name="l00242"></a>00242         <span class="comment">// Declare a file stream to read from.</span>
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<a name="l00243"></a>00243         RFileReadStream rStream;
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<a name="l00244"></a>00244
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<a name="l00245"></a>00245         <span class="comment">// Open the file</span>
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<a name="l00246"></a>00246         User::LeaveIfError(rStream.Open(fs, KFileName, EFileRead));
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<a name="l00247"></a>00247         CleanupClosePushL(rStream);
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<a name="l00248"></a>00248
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<a name="l00249"></a>00249         RBuf buf;
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<a name="l00250"></a>00250         CleanupClosePushL(buf);
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<a name="l00251"></a>00251
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<a name="l00252"></a>00252         <span class="comment">// Create the buffer by passing the open stream object to CreateL().</span>
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<a name="l00253"></a>00253         buf.CreateL(rStream, <a class="code" href="rbufexample_8cpp.html#aa9f486ebd20badddb8451883a82e763">KLargeBufSize</a>);
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<a name="l00254"></a>00254
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<a name="l00255"></a>00255         _LIT(KCreateUsingRReadStream, <span class="stringliteral">"\n Using RReadStream "</span>);
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<a name="l00256"></a>00256         iConsole-&gt;Printf(KCreateUsingRReadStream);
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<a name="l00257"></a>00257
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<a name="l00258"></a>00258         <span class="comment">// Deallocate the memory assigned to the buffer, close the stream and close the file server connection</span>
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<a name="l00259"></a>00259         CleanupStack::PopAndDestroy(&amp;buf);
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<a name="l00260"></a>00260         CleanupStack::PopAndDestroy(&amp;rStream);
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<a name="l00261"></a>00261         CleanupStack::PopAndDestroy(&amp;fs);
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<a name="l00262"></a>00262         }
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<a name="l00263"></a>00263
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<a name="l00267"></a><a class="code" href="class_c_r_buf_example.html#7815a44916e13bd2a567a6a25a1ffc6d">00267</a> <span class="keywordtype">void</span> <a class="code" href="class_c_r_buf_example.html#7815a44916e13bd2a567a6a25a1ffc6d">CRBufExample::CreateRBufFromAllocatedMemoryL</a>()
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<a name="l00268"></a>00268         {
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<a name="l00269"></a>00269         RBuf buf;
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<a name="l00270"></a>00270
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<a name="l00271"></a>00271         <span class="comment">// Allocate some memory.</span>
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<a name="l00272"></a>00272         TUint16* allocatedMemory = <span class="keyword">static_cast&lt;</span>TUint16*<span class="keyword">&gt;</span>( User::Alloc( <a class="code" href="rbufexample_8cpp.html#aa9f486ebd20badddb8451883a82e763">KLargeBufSize</a> * <span class="keyword">sizeof</span>( TUint16) ) ) ;
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<a name="l00273"></a>00273
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<a name="l00274"></a>00274         <span class="comment">// Transfer ownership of the memory to the descriptor.</span>
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<a name="l00275"></a>00275         buf.Assign(allocatedMemory, <a class="code" href="rbufexample_8cpp.html#aa9f486ebd20badddb8451883a82e763">KLargeBufSize</a>);
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<a name="l00276"></a>00276
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<a name="l00277"></a>00277         _LIT(KCreateFromAllocatedMemory, <span class="stringliteral">"\n By transferring ownership of allocated memory"</span>);
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<a name="l00278"></a>00278         iConsole-&gt;Printf(KCreateFromAllocatedMemory);
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<a name="l00279"></a>00279
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<a name="l00280"></a>00280         iConsole-&gt;Printf(KPressAKey);
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<a name="l00281"></a>00281         iConsole-&gt;Getch();
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<a name="l00282"></a>00282
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<a name="l00283"></a>00283         <span class="comment">// Deallocate the memory assigned to the buffer.</span>
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<a name="l00284"></a>00284         <span class="comment">// There is no need to free memory here because Assign() transferred ownership.</span>
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<a name="l00285"></a>00285         buf.Close();
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<a name="l00286"></a>00286         }
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<a name="l00287"></a>00287
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<a name="l00291"></a><a class="code" href="class_c_r_buf_example.html#6de7e813c107211fc904905e39582ee0">00291</a> <span class="keywordtype">void</span> <a class="code" href="class_c_r_buf_example.html#6de7e813c107211fc904905e39582ee0">CRBufExample::SwapTwoRBufsL</a>()
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<a name="l00292"></a>00292         {
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<a name="l00293"></a>00293         _LIT(KSwapAndCopy,<span class="stringliteral">"\n Swapping and copying data: "</span>);
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<a name="l00294"></a>00294         iConsole-&gt;Printf(KSwapAndCopy);
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<a name="l00295"></a>00295
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<a name="l00296"></a>00296         RBuf buf1;
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<a name="l00297"></a>00297
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<a name="l00298"></a>00298         <span class="comment">// Create a buffer descriptor, initialised with some text</span>
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<a name="l00299"></a>00299         User::LeaveIfError(buf1.Create(KBuffer1));
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<a name="l00300"></a>00300         CleanupClosePushL(buf1);
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<a name="l00301"></a>00301
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<a name="l00302"></a>00302         RBuf buf2;
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<a name="l00303"></a>00303
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<a name="l00304"></a>00304         <span class="comment">// Create a second buffer descriptor, initialised with some text</span>
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<a name="l00305"></a>00305         User::LeaveIfError(buf2.Create(KBuffer2));
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<a name="l00306"></a>00306         CleanupClosePushL(buf2);
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<a name="l00307"></a>00307
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<a name="l00308"></a>00308         _LIT(KBeforeSwapping, <span class="stringliteral">"\n Before swapping: "</span>);
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<a name="l00309"></a>00309         iConsole-&gt;Printf(KBeforeSwapping);
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<a name="l00310"></a>00310
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<a name="l00311"></a>00311         <span class="comment">// Print out the contents of the 2 descriptors</span>
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<a name="l00312"></a>00312         _LIT(KPrintFirstdata,<span class="stringliteral">"\n  Data present in first descriptor is: "</span>);
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<a name="l00313"></a>00313         iConsole-&gt;Printf(KPrintFirstdata);
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<a name="l00314"></a>00314         iConsole-&gt;Printf(buf1);
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<a name="l00315"></a>00315
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<a name="l00316"></a>00316         _LIT(KPrintSecondData,<span class="stringliteral">"\n  Data present in second descriptor is: "</span>);
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<a name="l00317"></a>00317         iConsole-&gt;Printf(KPrintSecondData);
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<a name="l00318"></a>00318         iConsole-&gt;Printf(buf2);
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<a name="l00319"></a>00319
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<a name="l00320"></a>00320         <span class="comment">// Swap them and print out the new contents</span>
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<a name="l00321"></a>00321         buf1.Swap(buf2);
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<a name="l00322"></a>00322
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<a name="l00323"></a>00323         _LIT(KAfterSwapping, <span class="stringliteral">"\n After swapping: "</span>);
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<a name="l00324"></a>00324         iConsole-&gt;Printf(KAfterSwapping);
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<a name="l00325"></a>00325
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<a name="l00326"></a>00326         iConsole-&gt;Printf(KPrintFirstdata);
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<a name="l00327"></a>00327         iConsole-&gt;Printf(buf1);
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<a name="l00328"></a>00328
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<a name="l00329"></a>00329         iConsole-&gt;Printf(KPrintSecondData);
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<a name="l00330"></a>00330         iConsole-&gt;Printf(buf2);
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<a name="l00331"></a>00331
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<a name="l00332"></a>00332         _LIT(KSwap, <span class="stringliteral">"\n Swapping between two RBufs is successful"</span>);
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<a name="l00333"></a>00333         iConsole-&gt;Printf(KSwap);
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<a name="l00334"></a>00334
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<a name="l00335"></a>00335         <span class="comment">// Deallocate memory assigned to the 2 buffer descriptors.</span>
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<a name="l00336"></a>00336         CleanupStack::PopAndDestroy(2); <span class="comment">// buf1, buf2</span>
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<a name="l00337"></a>00337         }
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<a name="l00338"></a>00338
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<a name="l00342"></a><a class="code" href="class_c_r_buf_example.html#fd4b2bcfb6b0a1fbef134f021ee7bcac">00342</a> <span class="keywordtype">void</span> <a class="code" href="class_c_r_buf_example.html#fd4b2bcfb6b0a1fbef134f021ee7bcac">CRBufExample::CopyDataUsingAssignmentOperatorL</a>()
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<a name="l00343"></a>00343         {
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<a name="l00344"></a>00344         RBuf buf1;
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<a name="l00345"></a>00345
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<a name="l00346"></a>00346         <span class="comment">// Create a buffer descriptor, initialised with some text</span>
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<a name="l00347"></a>00347         buf1.Create(KBuffer1);
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<a name="l00348"></a>00348         CleanupClosePushL(buf1);
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<a name="l00349"></a>00349
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<a name="l00350"></a>00350         RBuf buf2;
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<a name="l00351"></a>00351
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<a name="l00352"></a>00352         <span class="comment">// Create a second buffer descriptor, initialised with some text</span>
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<a name="l00353"></a>00353         User::LeaveIfError(buf2.Create(KBuffer2));
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<a name="l00354"></a>00354         CleanupClosePushL(buf2);
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<a name="l00355"></a>00355
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<a name="l00356"></a>00356         <span class="comment">// Copy data using assignment operator from one to the other. </span>
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<a name="l00357"></a>00357         <span class="comment">// Target buffer must be long enough, otherwise a panic occurs.</span>
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<a name="l00358"></a>00358         buf2= buf1;
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<a name="l00359"></a>00359
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<a name="l00360"></a>00360         <span class="comment">// Check the value of the buffers .</span>
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<a name="l00361"></a>00361         <span class="keywordflow">if</span> (buf1==buf2)
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<a name="l00362"></a>00362                 {
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<a name="l00363"></a>00363                 _LIT(KCopyDataUsingAssignmentOperator,<span class="stringliteral">"\n Copying data using assignment operator from descriptor, and RBuf is successful"</span>);
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<a name="l00364"></a>00364                 iConsole-&gt;Printf(KCopyDataUsingAssignmentOperator);
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<a name="l00365"></a>00365                 }
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<a name="l00366"></a>00366         <span class="keywordflow">else</span>
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<a name="l00367"></a>00367                 {
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<a name="l00368"></a>00368                 iConsole-&gt;Printf(KFailed);
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<a name="l00369"></a>00369                 }
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   340
 
<a name="l00370"></a>00370
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   341
 
<a name="l00371"></a>00371         iConsole-&gt;Printf(KPressAKey);
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   342
 
<a name="l00372"></a>00372     iConsole-&gt;Getch();
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<a name="l00373"></a>00373
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<a name="l00374"></a>00374         <span class="comment">// Deallocate memory assigned to the 2 buffer descriptors.</span>
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<a name="l00375"></a>00375         CleanupStack::PopAndDestroy(2); <span class="comment">// buf1, buf2</span>
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<a name="l00376"></a>00376         }
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   347
 
<a name="l00377"></a>00377
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<a name="l00381"></a><a class="code" href="class_c_r_buf_example.html#da558a684cebf4b9034706007ad7bda0">00381</a> <span class="keywordtype">void</span> <a class="code" href="class_c_r_buf_example.html#da558a684cebf4b9034706007ad7bda0">CRBufExample::ReallocateAndFreeTheMemoryBufferL</a>()
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<a name="l00382"></a>00382         {
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<a name="l00383"></a>00383         _LIT(KReAllocAndFree,<span class="stringliteral">"\n Realloc and free:"</span>);
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<a name="l00384"></a>00384         iConsole-&gt;Printf(KReAllocAndFree);
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   352
 
<a name="l00385"></a>00385
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<a name="l00386"></a>00386         RBuf buf;
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   354
 
<a name="l00387"></a>00387
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<a name="l00388"></a>00388         <span class="comment">// Create empty buffer descriptor with max length of KSmallBufSize.</span>
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<a name="l00389"></a>00389         User::LeaveIfError(buf.Create(<a class="code" href="rbufexample_8cpp.html#daf0758eb2344d655702792acb8ced64">KSmallBufSize</a>));
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   357
 
<a name="l00390"></a>00390
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<a name="l00391"></a>00391         <span class="comment">// Get the length of the buffer.</span>
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   359
 
<a name="l00392"></a>00392         TInt length= buf.Length();
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   360
 
<a name="l00393"></a>00393
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   361
 
<a name="l00394"></a>00394         <span class="comment">// Get the maximum length of the buffer.</span>
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   362
 
<a name="l00395"></a>00395         TInt maxLength= buf.MaxLength();
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   363
 
<a name="l00396"></a>00396
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   364
 
<a name="l00397"></a>00397         _LIT(KBeforeReAlloc,<span class="stringliteral">"\n Before ReAlloc: "</span>);
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   365
 
<a name="l00398"></a>00398         iConsole-&gt;Printf(KBeforeReAlloc);
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   366
 
<a name="l00399"></a>00399
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   367
 
<a name="l00400"></a>00400         <span class="comment">// Print out the length and max length</span>
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   368
 
<a name="l00401"></a>00401         iConsole-&gt;Printf(<a class="code" href="localeupdate_8h.html#c930ea536278a3ea6eca1814afcd7897">KLength</a>, length);
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   369
 
<a name="l00402"></a>00402         iConsole-&gt;Printf(KMaxLength, maxLength);
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   370
 
<a name="l00403"></a>00403
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<a name="l00404"></a>00404         <span class="comment">// Re-allocate the buffer descriptor. Length doesnt change but maxlength does.</span>
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<a name="l00405"></a>00405         User::LeaveIfError(buf.ReAlloc(<a class="code" href="rbufexample_8cpp.html#9b8374bb15a2980f3b92ac9a002e8cf5">KMedBufSize</a>));
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   373
 
<a name="l00406"></a>00406
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<a name="l00407"></a>00407         <span class="comment">// Get the length of the buffer.</span>
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   375
 
<a name="l00408"></a>00408         length= buf.Length();
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   376
 
<a name="l00409"></a>00409
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<a name="l00410"></a>00410         <span class="comment">// Get the maximum length of the reallocated buffer.</span>
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<a name="l00411"></a>00411         maxLength= buf.MaxLength();
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<a name="l00412"></a>00412
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<a name="l00413"></a>00413         _LIT(KAfterReAlloc,<span class="stringliteral">"\n After ReAlloc: "</span>);
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<a name="l00414"></a>00414         iConsole-&gt;Printf(KAfterReAlloc);
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   382
 
<a name="l00415"></a>00415
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   383
 
<a name="l00416"></a>00416         <span class="comment">// Print out the length and new max length</span>
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<a name="l00417"></a>00417         iConsole-&gt;Printf(<a class="code" href="localeupdate_8h.html#c930ea536278a3ea6eca1814afcd7897">KLength</a>, length);
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   385
 
<a name="l00418"></a>00418         iConsole-&gt;Printf(KMaxLength, maxLength);
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   386
 
<a name="l00419"></a>00419
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   387
 
<a name="l00420"></a>00420         <span class="comment">// Free the memory buffer. It sets the length and maxlength to zero.</span>
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   388
 
<a name="l00421"></a>00421         User::LeaveIfError(buf.ReAlloc(0));
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   389
 
<a name="l00422"></a>00422
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   390
 
<a name="l00423"></a>00423         <span class="comment">// Get the length of the buffer.</span>
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   391
 
<a name="l00424"></a>00424         length= buf.Length();
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   392
 
<a name="l00425"></a>00425
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<a name="l00426"></a>00426         <span class="comment">// Get the maximum length of the buffer.</span>
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<a name="l00427"></a>00427         maxLength= buf.MaxLength();
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<a name="l00428"></a>00428
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   396
 
<a name="l00429"></a>00429         _LIT(KFreeBuffer,<span class="stringliteral">"\n After free: "</span>);
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   397
 
<a name="l00430"></a>00430         iConsole-&gt;Printf(KFreeBuffer);
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   398
 
<a name="l00431"></a>00431
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   399
 
<a name="l00432"></a>00432         iConsole-&gt;Printf(<a class="code" href="localeupdate_8h.html#c930ea536278a3ea6eca1814afcd7897">KLength</a>, length);
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   400
 
<a name="l00433"></a>00433         iConsole-&gt;Printf(KMaxLength, maxLength);
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   401
 
<a name="l00434"></a>00434         }
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   402
 
<a name="l00435"></a>00435
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   403
 
<a name="l00439"></a><a class="code" href="class_c_r_buf_example.html#9ee071c3749b927f6af99dcb04c6bd4d">00439</a> <span class="keywordtype">void</span> <a class="code" href="class_c_r_buf_example.html#9ee071c3749b927f6af99dcb04c6bd4d">CRBufExample::ReplaceAndModifyTheDataL</a>()
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   404
 
<a name="l00440"></a>00440         {
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diff changeset 
   405
 
<a name="l00441"></a>00441         RBuf buf;
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   406
 
<a name="l00442"></a>00442
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   407
 
<a name="l00443"></a>00443         <span class="comment">// Create a buffer descriptor, initialised with some text</span>
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   408
 
<a name="l00444"></a>00444         User::LeaveIfError(buf.Create(KBuffer1));
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   409
 
<a name="l00445"></a>00445         CleanupClosePushL(buf);
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   410
 
<a name="l00446"></a>00446
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   411
 
<a name="l00447"></a>00447         _LIT(KReplaceAndModify,<span class="stringliteral">"\n Replace and modify: "</span>);
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   412
 
<a name="l00448"></a>00448         iConsole-&gt;Printf(KReplaceAndModify);
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   413
 
<a name="l00449"></a>00449
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diff changeset 
   414
 
<a name="l00450"></a>00450         <span class="comment">// Print the original data present in the buffer.</span>
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diff changeset 
   415
 
<a name="l00451"></a>00451         _LIT(KOriginalData,<span class="stringliteral">"\n Data present in RBuf is: "</span>);
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parents:
diff changeset 
   416
 
<a name="l00452"></a>00452         iConsole-&gt;Printf(KOriginalData);
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   417
 
<a name="l00453"></a>00453         iConsole-&gt;Printf(buf);
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   418
 
<a name="l00454"></a>00454
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   419
 
<a name="l00455"></a>00455         TInt pos= 1;
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   420
 
<a name="l00456"></a>00456
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   421
 
<a name="l00457"></a>00457         _LIT(KReplacedMessage,<span class="stringliteral">"22"</span>);
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   422
 
<a name="l00458"></a>00458
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   423
 
<a name="l00459"></a>00459         TInt length= KReplacedMessage().Length();
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   424
 
<a name="l00460"></a>00460
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   425
 
<a name="l00461"></a>00461         <span class="comment">// Replace a portion of the data in the buffer descriptor.</span>
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   426
 
<a name="l00462"></a>00462         buf.Replace(pos,length, KReplacedMessage);
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   427
 
<a name="l00463"></a>00463
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   428
 
<a name="l00464"></a>00464         <span class="comment">// Print the buffer's new contents.</span>
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diff changeset 
   429
 
<a name="l00465"></a>00465         _LIT(KReplacedData,<span class="stringliteral">"\n After replacement, data held in RBuf is: "</span>);
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parents:
diff changeset 
   430
 
<a name="l00466"></a>00466         iConsole-&gt;Printf(KReplacedData);
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   431
 
<a name="l00467"></a>00467         iConsole-&gt;Printf(buf);
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   432
 
<a name="l00468"></a>00468
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   433
 
<a name="l00469"></a>00469         pos=3;
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   434
 
<a name="l00470"></a>00470         length=1;
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   435
 
<a name="l00471"></a>00471
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   436
 
<a name="l00472"></a>00472         <span class="comment">// Delete the replacement text.</span>
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   437
 
<a name="l00473"></a>00473     buf.Delete(pos,length);
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   438
 
<a name="l00474"></a>00474
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   439
 
<a name="l00475"></a>00475     <span class="comment">// Print the buffer's contents again.</span>
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   440
 
<a name="l00476"></a>00476     _LIT(KModifiedData,<span class="stringliteral">"\n After modification, data held in RBuf is: "</span>);
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   441
 
<a name="l00477"></a>00477     iConsole-&gt;Printf(KModifiedData);
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   442
 
<a name="l00478"></a>00478     iConsole-&gt;Printf(buf);
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   443
 
<a name="l00479"></a>00479
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   444
 
<a name="l00480"></a>00480     _LIT(KReplaceAndModifyData,<span class="stringliteral">"\n Replacing and modifying the data held in RBuf is successful"</span>);
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parents:
diff changeset 
   445
 
<a name="l00481"></a>00481     iConsole-&gt;Printf(KReplaceAndModifyData);
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   446
 
<a name="l00482"></a>00482
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   447
 
<a name="l00483"></a>00483     <span class="comment">// Deallocate the memory assigned to the buffer. </span>
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   448
 
<a name="l00484"></a>00484         CleanupStack::PopAndDestroy(&amp;buf);
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   449
 
<a name="l00485"></a>00485         }
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   450
 
<a name="l00486"></a>00486
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   451
 
<a name="l00490"></a><a class="code" href="class_c_r_buf_example.html#1d99cb2bef146c76bd1f99908435ecfb">00490</a> <span class="keywordtype">void</span> <a class="code" href="class_c_r_buf_example.html#1d99cb2bef146c76bd1f99908435ecfb">CRBufExample::CleanUpRulesL</a>()
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   452
 
<a name="l00491"></a>00491         {
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   453
 
<a name="l00492"></a>00492         RBuf buf;
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parents:
diff changeset 
   454
 
<a name="l00493"></a>00493
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   455
 
<a name="l00494"></a>00494         <span class="comment">// Create a buffer descriptor, initialised with some text</span>
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   456
 
<a name="l00495"></a>00495         User::LeaveIfError(buf.Create(KBuffer1));
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   457
 
<a name="l00496"></a>00496
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   458
 
<a name="l00497"></a>00497         <span class="comment">// To avoid memory leaks use RBuf::CleanupClosePushL() to push a cleanup item for the RBuf onto the cleanup stack.</span>
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parents:
diff changeset 
   459
 
<a name="l00498"></a>00498         <span class="comment">// The effect is to cause Close() to be called on the buffer descriptor if a leave occurs, </span>
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parents:
diff changeset 
   460
 
<a name="l00499"></a>00499         <span class="comment">// or when CleanupStack::PopAndDestroy() is called.</span>
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   461
 
<a name="l00500"></a>00500         buf.CleanupClosePushL();
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   462
 
<a name="l00501"></a>00501
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   463
 
<a name="l00502"></a>00502         <span class="comment">// Causes Close() to be called to deallocate the memory assigned to the buffer.</span>
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   464
 
<a name="l00503"></a>00503         CleanupStack::PopAndDestroy(&amp;buf);
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   465
 
<a name="l00504"></a>00504
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   466
 
<a name="l00505"></a>00505         _LIT(KCleanUp,<span class="stringliteral">"\n RBuf cleanup is successful"</span>);
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   467
 
<a name="l00506"></a>00506         iConsole-&gt;Printf(KCleanUp);
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   468
 
<a name="l00507"></a>00507
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   469
 
<a name="l00508"></a>00508         _LIT(KExitMsg, <span class="stringliteral">"\n\n Press any key to exit the example"</span>);
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   470
 
<a name="l00509"></a>00509     iConsole-&gt;Printf(KExitMsg);
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   471
 
<a name="l00510"></a>00510         iConsole-&gt;Getch();
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   472
 
<a name="l00511"></a>00511         }
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   473
 
<a name="l00512"></a>00512
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   474
 
<a name="l00513"></a><a class="code" href="rbufexample_8cpp.html#5fb473d4ee18739183215b04dcad6e12">00513</a> <span class="keywordtype">void</span> <a class="code" href="circularbuffer_8cpp.html#5fb473d4ee18739183215b04dcad6e12">MainL</a>()
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   475
 
<a name="l00514"></a>00514         {
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   476
 
<a name="l00515"></a>00515         <a class="code" href="class_c_r_buf_example.html">CRBufExample</a>* app= <a class="code" href="class_c_r_buf_example.html#8bd254efe876ae2b5138f79a101272d6">CRBufExample::NewL</a>();
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   477
 
<a name="l00516"></a>00516         CleanupStack::PushL(app);
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   478
 
<a name="l00517"></a>00517
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   479
 
<a name="l00518"></a>00518         <span class="comment">// Creates empty RBuf.</span>
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   480
 
<a name="l00519"></a>00519         app-&gt;<a class="code" href="class_c_r_buf_example.html#57856a0e131215ccef45af713f5aad5f">CreateRBufL</a>();
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   481
 
<a name="l00520"></a>00520
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   482
 
<a name="l00521"></a>00521         <span class="comment">// Creates RBuf from an existing descriptor.</span>
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   483
 
<a name="l00522"></a>00522         app-&gt;<a class="code" href="class_c_r_buf_example.html#c33844cce7df0b1c2a57f6edc3ac0906">CreateRBufFromExistingDesL</a>();
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   484
 
<a name="l00523"></a>00523
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   485
 
<a name="l00524"></a>00524         <span class="comment">// Creates RBuf from an HBufC.</span>
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   486
 
<a name="l00525"></a>00525         app-&gt;<a class="code" href="class_c_r_buf_example.html#398c08c23d056f1705f82ea5117c07e8">CreateRBufFromHBufCL</a>();
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   487
 
<a name="l00526"></a>00526
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   488
 
<a name="l00527"></a>00527         <span class="comment">// Creates RBuf from another RBuf.</span>
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   489
 
<a name="l00528"></a>00528         app-&gt;<a class="code" href="class_c_r_buf_example.html#0a4263b7828a5214748786dae31e66b7">CreateRBufFromAnotherRBufL</a>();
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   490
 
<a name="l00529"></a>00529
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   491
 
<a name="l00530"></a>00530         <span class="comment">// Create RBuf using RReadStream</span>
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   492
 
<a name="l00531"></a>00531         app-&gt;<a class="code" href="class_c_r_buf_example.html#15c0b84f3b6704d60b1e4f3ff50f590b">CreateRBufUsingRReadStreamL</a>();
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   493
 
<a name="l00532"></a>00532
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   494
 
<a name="l00533"></a>00533         <span class="comment">// Creates RBuf from allocated memory.</span>
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   495
 
<a name="l00534"></a>00534         app-&gt;<a class="code" href="class_c_r_buf_example.html#7815a44916e13bd2a567a6a25a1ffc6d">CreateRBufFromAllocatedMemoryL</a>();
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diff changeset 
   496
 
<a name="l00535"></a>00535
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diff changeset 
   497
 
<a name="l00536"></a>00536         <span class="comment">// Swaps two RBufs.</span>
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diff changeset 
   498
 
<a name="l00537"></a>00537         app-&gt;<a class="code" href="class_c_r_buf_example.html#6de7e813c107211fc904905e39582ee0">SwapTwoRBufsL</a>();
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   499
 
<a name="l00538"></a>00538
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diff changeset 
   500
 
<a name="l00539"></a>00539         <span class="comment">// Copies data using assignment operator.</span>
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diff changeset 
   501
 
<a name="l00540"></a>00540         app-&gt;<a class="code" href="class_c_r_buf_example.html#fd4b2bcfb6b0a1fbef134f021ee7bcac">CopyDataUsingAssignmentOperatorL</a>();
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   502
 
<a name="l00541"></a>00541
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   503
 
<a name="l00542"></a>00542         <span class="comment">// Reallocates and frees the memory buffer.</span>
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diff changeset 
   504
 
<a name="l00543"></a>00543         app-&gt;<a class="code" href="class_c_r_buf_example.html#da558a684cebf4b9034706007ad7bda0">ReallocateAndFreeTheMemoryBufferL</a>();
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   505
 
<a name="l00544"></a>00544
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   506
 
<a name="l00545"></a>00545         <span class="comment">// Replaces and modifies the data in the descriptor.</span>
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   507
 
<a name="l00546"></a>00546         app-&gt;<a class="code" href="class_c_r_buf_example.html#9ee071c3749b927f6af99dcb04c6bd4d">ReplaceAndModifyTheDataL</a>();
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   508
 
<a name="l00547"></a>00547
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   509
 
<a name="l00548"></a>00548         <span class="comment">// Demonstrates cleanup.</span>
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   510
 
<a name="l00549"></a>00549         app-&gt;<a class="code" href="class_c_r_buf_example.html#1d99cb2bef146c76bd1f99908435ecfb">CleanUpRulesL</a>();
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   511
 
<a name="l00550"></a>00550
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   512
 
<a name="l00551"></a>00551         CleanupStack::PopAndDestroy(app);
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   513
 
<a name="l00552"></a>00552         }
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diff changeset 
   514
 
<a name="l00553"></a>00553
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diff changeset 
   515
 
<a name="l00554"></a><a class="code" href="rbufexample_8cpp.html#0f358e9c4355138f629b8c4f37310295">00554</a> GLDEF_C TInt <a class="code" href="dbllist_8cpp.html#0f358e9c4355138f629b8c4f37310295">E32Main</a>()
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diff changeset 
   516
 
<a name="l00555"></a>00555         {
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   517
 
<a name="l00556"></a>00556         __UHEAP_MARK;
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diff changeset 
   518
 
<a name="l00557"></a>00557
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diff changeset 
   519
 
<a name="l00558"></a>00558         CTrapCleanup* cleanup = CTrapCleanup::New();
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diff changeset 
   520
 
<a name="l00559"></a>00559         <span class="keywordflow">if</span>(cleanup == NULL)
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   521
 
<a name="l00560"></a>00560                 {
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   522
 
<a name="l00561"></a>00561                 <span class="keywordflow">return</span> KErrNoMemory;
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   523
 
<a name="l00562"></a>00562                 }
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diff changeset 
   524
 
<a name="l00563"></a>00563         TRAPD(err, <a class="code" href="circularbuffer_8cpp.html#5fb473d4ee18739183215b04dcad6e12">MainL</a>());
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diff changeset 
   525
 
<a name="l00564"></a>00564         <span class="keyword">delete</span> cleanup;
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parents:
diff changeset 
   526
 
<a name="l00565"></a>00565
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   527
 
<a name="l00566"></a>00566         <span class="keywordflow">if</span>(err !=KErrNone)
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   528
 
<a name="l00567"></a>00567                 {
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   529
 
<a name="l00568"></a>00568                 User::Panic(KFailed, err);
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   530
 
<a name="l00569"></a>00569                 }
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diff changeset 
   531
 
<a name="l00570"></a>00570
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   532
 
<a name="l00571"></a>00571         __UHEAP_MARKEND;
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   533
 
<a name="l00572"></a>00572         <span class="keywordflow">return</span> KErrNone;
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   534
 
<a name="l00573"></a>00573         }
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   535
 
<a name="l00574"></a>00574
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   536
 
<a name="l00575"></a>00575
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   537
 
<a name="l00576"></a>00576
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   538
 
<a name="l00577"></a>00577
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   539
 
<a name="l00578"></a>00578
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   540
 
<a name="l00579"></a>00579
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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parents:
diff changeset 
   541
 
<a name="l00580"></a>00580
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   542
 
</pre></div><hr size="1"><address style="text-align: right;"><small>Generated on Thu Jan 21 10:32:55 2010 for TB10.1 Example Applications by&nbsp;
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   543
 
<a href="http://www.doxygen.org/index.html">
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diff changeset 
   544
 
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.3 </small></address>
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diff changeset 
   545
 
</body>
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   546
 
</html>
FCL/sftools/depl/docscontent