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Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_pointer_8cpp-source.html
author Dominic Pinkman <Dominic.Pinkman@Nokia.com>
Fri, 22 Jan 2010 18:26:19 +0000
changeset 1 25a17d01db0c
permissions -rw-r--r--
Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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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/Desc/Pointer/Pointer.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/Desc/Pointer/Pointer.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (c) 2000-2009 Nokia Corporation and/or its subsidiary(-ies).</span>
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<a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span>
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<a name="l00003"></a>00003 <span class="comment">// This component and the accompanying materials are made available</span>
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<a name="l00004"></a>00004 <span class="comment">// under the terms of "Eclipse Public License v1.0"</span>
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<a name="l00005"></a>00005 <span class="comment">// which accompanies this distribution, and is available</span>
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<a name="l00006"></a>00006 <span class="comment">// at the URL "http://www.eclipse.org/legal/epl-v10.html".</span>
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<a name="l00007"></a>00007 <span class="comment">//</span>
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<a name="l00008"></a>00008 <span class="comment">// Initial Contributors:</span>
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<a name="l00009"></a>00009 <span class="comment">// Nokia Corporation - initial contribution.</span>
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<a name="l00010"></a>00010 <span class="comment">//</span>
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<a name="l00011"></a>00011 <span class="comment">// Contributors:</span>
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<a name="l00012"></a>00012 <span class="comment">//</span>
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<a name="l00013"></a>00013 <span class="comment">// Description:</span>
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<a name="l00014"></a>00014 <span class="comment">// Examples to demonstrate the basic ideas of</span>
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<a name="l00015"></a>00015 <span class="comment">// pointer descriptors. </span>
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<a name="l00016"></a>00016 <span class="comment">//</span>
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<a name="l00017"></a>00017
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<a name="l00018"></a>00018 <span class="preprocessor">#include "CommonFramework.h"</span>
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<a name="l00019"></a>00019
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<a name="l00020"></a>00020 <span class="comment">//</span>
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<a name="l00021"></a>00021 <span class="comment">// Common literal text</span>
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<a name="l00022"></a>00022 <span class="comment">//</span>
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<a name="l00023"></a>00023 _LIT(KTxtHiTHere,<span class="stringliteral">"Hi there"</span>);
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<a name="l00024"></a>00024 _LIT(KTxtHaveNiceDay,<span class="stringliteral">"Have a nice day!"</span>);
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<a name="l00025"></a>00025
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<a name="l00026"></a>00026 <span class="comment">//</span>
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<a name="l00027"></a>00027 <span class="comment">// Common format strings</span>
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<a name="l00028"></a>00028 <span class="comment">//</span>
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<a name="l00029"></a>00029 _LIT(KCommonFormat1,<span class="stringliteral">"\"%s\"\n"</span>);
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<a name="l00030"></a>00030 _LIT(KCommonFormat3,<span class="stringliteral">"length=%d; size=%d;\n"</span>);
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<a name="l00031"></a>00031 _LIT(KCommonFormat5,<span class="stringliteral">"Ptr()=%x; Length()=%d; Size()=%d\n"</span>);
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<a name="l00032"></a>00032 _LIT(KCommonFormat16,<span class="stringliteral">"MaxLength()=%d\n"</span>);
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<a name="l00033"></a>00033 _LIT(KCommonFormat17,<span class="stringliteral">"\"%S\"; "</span>);
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<a name="l00034"></a>00034 _LIT(KCommonFormat18,<span class="stringliteral">"Length()=%d; Size()=%d; "</span>);
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<a name="l00035"></a>00035
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<a name="l00036"></a>00036 <span class="comment">// Do the example</span>
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<a name="l00037"></a>00037 LOCAL_C <span class="keywordtype">void</span> doExampleL()
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<a name="l00038"></a>00038     {
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<a name="l00039"></a>00039                                 <span class="comment">// Define a constant C style (ASCII) string</span>
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<a name="l00040"></a>00040         <span class="keyword">const</span> TText8* cstr8 = (TText8*)<span class="stringliteral">"Hello World!"</span>;
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<a name="l00041"></a>00041
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<a name="l00042"></a>00042                                 <span class="comment">// Look at it.</span>
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<a name="l00043"></a>00043
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<a name="l00044"></a>00044         TBuf&lt;12&gt; temp;
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<a name="l00045"></a>00045         temp.Copy(TPtrC8(cstr8));
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<a name="l00046"></a>00046         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(temp);
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<a name="l00047"></a>00047
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<a name="l00048"></a>00048                                 <span class="comment">// A TPtrC8 descriptor represents the</span>
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<a name="l00049"></a>00049                         <span class="comment">// ASCII text; contrast this with the</span>
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<a name="l00050"></a>00050                         <span class="comment">// basic C string  </span>
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<a name="l00051"></a>00051         TPtrC8 ptrC8(cstr8);
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<a name="l00052"></a>00052
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<a name="l00053"></a>00053                                 <span class="comment">// Look at:</span>
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<a name="l00054"></a>00054                                 <span class="comment">//   1. Address of C string</span>
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<a name="l00055"></a>00055                                 <span class="comment">//   2. Length of the C string</span>
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<a name="l00056"></a>00056                                 <span class="comment">//   3. Size of the string.</span>
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<a name="l00057"></a>00057                                 <span class="comment">// Size is 13 bytes to allow for </span>
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<a name="l00058"></a>00058                                 <span class="comment">// the terminating NULL.</span>
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<a name="l00059"></a>00059                     <span class="comment">// </span>
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<a name="l00060"></a>00060         _LIT(KFormat2,<span class="stringliteral">"\nNarrow C string at %x; "</span>);
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<a name="l00061"></a>00061         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KFormat2,cstr8);
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<a name="l00062"></a>00062         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KCommonFormat3,12,<span class="keyword">sizeof</span>(<span class="stringliteral">"Hello World!"</span>));
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<a name="l00063"></a>00063
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<a name="l00064"></a>00064                                 <span class="comment">// Look at:</span>
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<a name="l00065"></a>00065                                 <span class="comment">//   1. Address of descriptor</span>
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<a name="l00066"></a>00066                                 <span class="comment">//   2. Address of descriptor data area</span>
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<a name="l00067"></a>00067                                 <span class="comment">//   3. Length  of descriptor</span>
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<a name="l00068"></a>00068                                 <span class="comment">//   4. Size of descriptor</span>
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<a name="l00069"></a>00069                                 <span class="comment">// Address of descriptor data area is the </span>
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<a name="l00070"></a>00070                                 <span class="comment">// same as the address of the C string. </span>
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<a name="l00071"></a>00071                                 <span class="comment">// The Size of the descriptor data is only</span>
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<a name="l00072"></a>00072                                 <span class="comment">// 12 bytes (1 byte for each character).</span>
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<a name="l00073"></a>00073         _LIT(KFormat4,<span class="stringliteral">"8-bit pointer-descriptor at %x; "</span>);
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<a name="l00074"></a>00074         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KFormat4,&amp;ptrC8);
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<a name="l00075"></a>00075         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KCommonFormat5,ptrC8.Ptr(),ptrC8.Length(),ptrC8.Size());
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    83
 
<a name="l00076"></a>00076
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    84
 
<a name="l00077"></a>00077
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<a name="l00078"></a>00078                                 <span class="comment">// Define a constant C style (Wide) string</span>
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<a name="l00079"></a>00079         <span class="keyword">const</span> TText16*  cstr16 = (TText16*)L<span class="stringliteral">"Hello World!"</span>;
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    87
 
<a name="l00080"></a>00080
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<a name="l00081"></a>00081                                 <span class="comment">// A TPtrC16 descriptor represents the</span>
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<a name="l00082"></a>00082                         <span class="comment">// wide (i.e. double-byte character) text;</span>
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<a name="l00083"></a>00083                         <span class="comment">// contrast this with the basic C string.  </span>
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<a name="l00084"></a>00084         TPtrC16 ptrC16(cstr16);
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<a name="l00085"></a>00085
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<a name="l00086"></a>00086         _LIT(KFormat7,<span class="stringliteral">"\nWide C string at %x; "</span>);
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<a name="l00087"></a>00087         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KFormat7,cstr16);
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<a name="l00088"></a>00088         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KCommonFormat3,12,<span class="keyword">sizeof</span>(L<span class="stringliteral">"Hello World!"</span>));
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<a name="l00089"></a>00089
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<a name="l00090"></a>00090                                 <span class="comment">// Look at:</span>
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<a name="l00091"></a>00091                                 <span class="comment">//   1. Address of descriptor</span>
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<a name="l00092"></a>00092                                 <span class="comment">//   2. Address of descriptor data area</span>
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<a name="l00093"></a>00093                                 <span class="comment">//   3. Length  of descriptor</span>
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<a name="l00094"></a>00094                                 <span class="comment">//   4. Size of descriptor</span>
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<a name="l00095"></a>00095                                 <span class="comment">// Address of descriptor data area is the</span>
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<a name="l00096"></a>00096                                 <span class="comment">// same as the address of the C string.</span>
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<a name="l00097"></a>00097                                 <span class="comment">// The size of descriptor data is only</span>
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<a name="l00098"></a>00098                                 <span class="comment">// 24 bytes (2 bytes for each character).</span>
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<a name="l00099"></a>00099         _LIT(KFormat6,<span class="stringliteral">"16-bit pointer-descriptor at %x; "</span>);
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<a name="l00100"></a>00100         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KFormat6,&amp;ptrC16);
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<a name="l00101"></a>00101         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KCommonFormat5,ptrC16.Ptr(),ptrC16.Length(),ptrC16.Size());
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<a name="l00102"></a>00102
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<a name="l00103"></a>00103
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<a name="l00104"></a>00104                                 <span class="comment">// Use the _S macro to define a constant </span>
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<a name="l00105"></a>00105                                 <span class="comment">// C style string of the appropriate width.</span>
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<a name="l00106"></a>00106                                 <span class="comment">// The TText variant is defined at build</span>
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<a name="l00107"></a>00107                                 <span class="comment">// time as  TText16 </span>
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<a name="l00108"></a>00108                                 <span class="comment">// (In earlier times this could also have been TText8,</span>
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<a name="l00109"></a>00109                                 <span class="comment">//  but in all current versions, TText16 is the standard).</span>
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<a name="l00110"></a>00110         <span class="keyword">const</span> TText* cstr = _S(<span class="stringliteral">"Hello World!"</span>);
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<a name="l00111"></a>00111
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<a name="l00112"></a>00112                                 <span class="comment">// TPtrC descriptor represents the text;</span>
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<a name="l00113"></a>00113                                 <span class="comment">// the TPtrC variant is defined at build </span>
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<a name="l00114"></a>00114                                 <span class="comment">// time as TPtrC16.</span>
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<a name="l00115"></a>00115         TPtrC ptrc(cstr);
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<a name="l00116"></a>00116
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<a name="l00117"></a>00117         _LIT(KFormat8,<span class="stringliteral">"\nBuild-dependent TText at %x; "</span>);
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<a name="l00118"></a>00118         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KFormat8,cstr);
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<a name="l00119"></a>00119         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KCommonFormat3,12,<span class="keyword">sizeof</span>(
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<a name="l00120"></a>00120                                                                   #ifdef _UNICODE
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<a name="l00121"></a>00121                                                                   L<span class="stringliteral">"Hello world!"</span>
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<a name="l00122"></a>00122                                                                   #<span class="keywordflow">else</span>
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<a name="l00123"></a>00123                                                                   <span class="stringliteral">"Hello world!"</span>
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<a name="l00124"></a>00124                                                                   #endif
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<a name="l00125"></a>00125                                                   )
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<a name="l00126"></a>00126                                    );
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<a name="l00127"></a>00127
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<a name="l00128"></a>00128                                 <span class="comment">// Look at descriptor basics.</span>
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<a name="l00129"></a>00129         _LIT(KTxtBuildDependentptdesc,<span class="stringliteral">"Build-dependent pointer-descriptor"</span>);
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<a name="l00130"></a>00130         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KTxtBuildDependentptdesc);
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<a name="l00131"></a>00131
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<a name="l00132"></a>00132         _LIT(KFormat9,<span class="stringliteral">" at %x; "</span>);
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<a name="l00133"></a>00133         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KFormat9,&amp;ptrc);
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<a name="l00134"></a>00134         _LIT(KFormat10,<span class="stringliteral">"Ptr()=%x;\n"</span>);
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<a name="l00135"></a>00135         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KFormat10,ptrc.Ptr());
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<a name="l00136"></a>00136         _LIT(KFormat11,<span class="stringliteral">" Length()=%d; Size()=%d\n"</span>);
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<a name="l00137"></a>00137         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KFormat11,ptrc.Length(),ptrc.Size());
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<a name="l00138"></a>00138
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<a name="l00139"></a>00139                                 <span class="comment">// The _LIT macro is most useful. It constructs</span>
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<a name="l00140"></a>00140                     <span class="comment">// a family of constant descriptor classes TLitC&lt;Tint&gt;. </span>
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<a name="l00141"></a>00141                     <span class="comment">// The constant generated by the _LIT macro:</span>
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<a name="l00142"></a>00142                     <span class="comment">//   1. can be passed as 'const TDesC&amp;' type</span>
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<a name="l00143"></a>00143                     <span class="comment">//   2. has an address-of operator 'operator&amp;()' which returns a 'const TDesC*' type</span>
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<a name="l00144"></a>00144                     <span class="comment">//   3. can be passed as a TRefByValue&lt;const TDesC&gt;</span>
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<a name="l00145"></a>00145                                 <span class="comment">//</span>
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<a name="l00146"></a>00146                                 <span class="comment">// The _L macro constructs a TPtrC but should be avoided </span>
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<a name="l00147"></a>00147                     <span class="comment">// where possible on the grounds of efficiency.</span>
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<a name="l00148"></a>00148                     <span class="comment">// Use the _LIT macro instead.</span>
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<a name="l00149"></a>00149
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<a name="l00150"></a>00150         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(_L(<span class="stringliteral">"\nThe _L macro constructs a TPtrC"</span>));
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   158
 
<a name="l00151"></a>00151         <span class="comment">// * * * * * * * * * * * * * * * * * * * * * * * * * * * *</span>
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   159
 
<a name="l00152"></a>00152         <span class="comment">// * * * * * * * * * * * * * * * * * * * * * * * * * * * *</span>
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   160
 
<a name="l00153"></a>00153
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   161
 
<a name="l00154"></a>00154         _LIT(KTxtTPtrBasicConcepts,<span class="stringliteral">"\n--&gt;TPtr basic concepts"</span>);
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<a name="l00155"></a>00155         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KTxtTPtrBasicConcepts);
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   163
 
<a name="l00156"></a>00156         _LIT(KTxtPressToContinue,<span class="stringliteral">" (press any key to continue)\n"</span>);
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   164
 
<a name="l00157"></a>00157         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KTxtPressToContinue);
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   165
 
<a name="l00158"></a>00158         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Getch();
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   166
 
<a name="l00159"></a>00159
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   167
 
<a name="l00160"></a>00160                                 <span class="comment">// Set up an area and initialise to a </span>
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   168
 
<a name="l00161"></a>00161                                 <span class="comment">// C style string (including the NULL).</span>
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<a name="l00162"></a>00162                                 <span class="comment">// The need for the NULL forces cstr to</span>
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<a name="l00163"></a>00163                                 <span class="comment">// have a length of 16.</span>
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<a name="l00164"></a>00164         TText str[16] =  {<span class="charliteral">'H'</span>, <span class="charliteral">'a'</span>, <span class="charliteral">'v'</span>, <span class="charliteral">'e'</span>, <span class="charliteral">' '</span>, <span class="charliteral">'a'</span>,
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<a name="l00165"></a>00165                                           <span class="charliteral">' '</span>, <span class="charliteral">'n'</span>, <span class="charliteral">'i'</span>, <span class="charliteral">'c'</span>, <span class="charliteral">'e'</span>,
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<a name="l00166"></a>00166                                           <span class="charliteral">' '</span>, <span class="charliteral">'d'</span>, <span class="charliteral">'a'</span>, <span class="charliteral">'y'</span>, <span class="charliteral">'\0'</span>};
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   174
 
<a name="l00167"></a>00167
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<a name="l00168"></a>00168                                 <span class="comment">// Look at it.</span>
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<a name="l00169"></a>00169         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KCommonFormat1,&amp;str[0]);
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   177
 
<a name="l00170"></a>00170
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<a name="l00171"></a>00171                                 <span class="comment">// TPtr descriptor represents the text.</span>
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<a name="l00172"></a>00172                                 <span class="comment">// Descriptor length is 15 but max length</span>
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<a name="l00173"></a>00173                                 <span class="comment">// is 16. The descriptor does not need the</span>
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<a name="l00174"></a>00174                                 <span class="comment">// terminating NULL, so in this example,</span>
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<a name="l00175"></a>00175                                 <span class="comment">// the last data position is spare. </span>
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<a name="l00176"></a>00176         TPtr  ptr(&amp;str[0],15,16);
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   184
 
<a name="l00177"></a>00177
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<a name="l00178"></a>00178                                 <span class="comment">// Look at:</span>
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   186
 
<a name="l00179"></a>00179                                 <span class="comment">//   1. Address of the C string</span>
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<a name="l00180"></a>00180                                 <span class="comment">//   2. Length of the C string</span>
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<a name="l00181"></a>00181                                 <span class="comment">//   3. Size of the string</span>
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<a name="l00182"></a>00182                                 <span class="comment">// Size is 16 bytes to allow for</span>
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<a name="l00183"></a>00183                                 <span class="comment">// the terminating NULL.</span>
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   191
 
<a name="l00184"></a>00184         _LIT(KFormat12,<span class="stringliteral">"C string at %x; "</span>);
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<a name="l00185"></a>00185         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KFormat12,str);
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<a name="l00186"></a>00186         _LIT(KFormat13,<span class="stringliteral">"length=%d; size=%d\n"</span>);
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<a name="l00187"></a>00187         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KFormat13,15,<span class="keyword">sizeof</span>(str));
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   195
 
<a name="l00188"></a>00188
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   196
 
<a name="l00189"></a>00189                         <span class="comment">// Look at:</span>
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<a name="l00190"></a>00190                                 <span class="comment">//   1. Address of descriptor</span>
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<a name="l00191"></a>00191                                 <span class="comment">//   2. Address of descriptor area</span>
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<a name="l00192"></a>00192                                 <span class="comment">//   3. Length of descriptor</span>
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<a name="l00193"></a>00193                                 <span class="comment">//   4. Size of descriptor</span>
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<a name="l00194"></a>00194                                 <span class="comment">//   5. Max length of descriptor </span>
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<a name="l00195"></a>00195                                 <span class="comment">// Address of descriptor data area is the </span>
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<a name="l00196"></a>00196                                 <span class="comment">// same as the address of cstr[]. The</span>
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<a name="l00197"></a>00197                                 <span class="comment">// descriptor length is 15 but the maximum</span>
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<a name="l00198"></a>00198                                 <span class="comment">// length is 16.</span>
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<a name="l00199"></a>00199         _LIT(KFormat14,<span class="stringliteral">"Descriptor at %x; "</span>);
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<a name="l00200"></a>00200         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KFormat14,&amp;ptr);
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<a name="l00201"></a>00201         _LIT(KFormat15,<span class="stringliteral">"Ptr()=%x; Length()=%d; Size()=%d; "</span>);
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<a name="l00202"></a>00202         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KFormat15,ptr.Ptr(),ptr.Length(),ptr.Size());
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<a name="l00203"></a>00203         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KCommonFormat16,ptr.MaxLength());
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<a name="l00204"></a>00204
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<a name="l00205"></a>00205                                 <span class="comment">// The data can be replaced using the </span>
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<a name="l00206"></a>00206                                 <span class="comment">// assignment operator. Note the reference to</span>
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<a name="l00207"></a>00207                     <span class="comment">// the TLitC&lt;&gt; KTxtHiTHere constructed using the _LIT macro.</span>
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<a name="l00208"></a>00208         ptr = KTxtHiTHere;
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<a name="l00209"></a>00209
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<a name="l00210"></a>00210                                 <span class="comment">// Length of descriptor is now 8 but maximum</span>
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<a name="l00211"></a>00211                                 <span class="comment">// length remains at 16.</span>
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<a name="l00212"></a>00212                                 <span class="comment">// Size is 16 </span>
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   220
 
<a name="l00213"></a>00213                                 <span class="comment">// Text in ptr's data area (i.e. in the area </span>
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<a name="l00214"></a>00214                                 <span class="comment">// defined by str[]) is </span>
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<a name="l00215"></a>00215                                 <span class="comment">// now "Hi there")</span>
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<a name="l00216"></a>00216         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KCommonFormat17,&amp;ptr);
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<a name="l00217"></a>00217         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KCommonFormat18,ptr.Length(),ptr.Size());
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<a name="l00218"></a>00218         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KCommonFormat16,ptr.MaxLength());
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<a name="l00219"></a>00219
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<a name="l00220"></a>00220                                 <span class="comment">// Length can be changed; data represented </span>
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<a name="l00221"></a>00221                                 <span class="comment">// by the descriptor is now "Hi"</span>
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<a name="l00222"></a>00222         ptr.SetLength(2);
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<a name="l00223"></a>00223
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<a name="l00224"></a>00224         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KCommonFormat17,&amp;ptr);
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<a name="l00225"></a>00225         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KCommonFormat18,ptr.Length(),ptr.Size());
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<a name="l00226"></a>00226         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KCommonFormat16,ptr.MaxLength());
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<a name="l00227"></a>00227
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<a name="l00228"></a>00228                                 <span class="comment">// Length can be set to zero; NO data </span>
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<a name="l00229"></a>00229                                 <span class="comment">// is now represented by the</span>
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<a name="l00230"></a>00230                                 <span class="comment">// descriptor but maximum length is still 16</span>
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<a name="l00231"></a>00231         ptr.Zero();
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<a name="l00232"></a>00232         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KCommonFormat17,&amp;ptr);
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<a name="l00233"></a>00233         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KCommonFormat18,ptr.Length(),ptr.Size());
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<a name="l00234"></a>00234         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KCommonFormat16,ptr.MaxLength());
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<a name="l00235"></a>00235
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<a name="l00236"></a>00236                                 <span class="comment">// Replace text with text of length 16, </span>
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<a name="l00237"></a>00237                                 <span class="comment">// the maximum. </span>
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<a name="l00238"></a>00238         ptr = KTxtHaveNiceDay;
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<a name="l00239"></a>00239         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KCommonFormat17,&amp;ptr);
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<a name="l00240"></a>00240         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KCommonFormat18,ptr.Length(),ptr.Size());
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<a name="l00241"></a>00241         <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>-&gt;Printf(KCommonFormat16,ptr.MaxLength());
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<a name="l00242"></a>00242
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<a name="l00243"></a>00243                                 <span class="comment">// adding another character causes panic !!</span>
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<a name="l00244"></a>00244                                 <span class="comment">// length would be &gt; maximum.</span>
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<a name="l00245"></a>00245                                 <span class="comment">// </span>
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<a name="l00246"></a>00246                                 <span class="comment">// Remove the "//" marks on the next line</span>
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<a name="l00247"></a>00247                                 <span class="comment">// to see this happen</span>
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<a name="l00248"></a>00248         <span class="comment">//ptr.Append('@');</span>
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<a name="l00249"></a>00249     }
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<a name="l00250"></a>00250
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<a name="l00251"></a>00251
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<a name="l00252"></a>00252
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<a name="l00253"></a>00253
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<a name="l00254"></a>00254
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<a name="l00255"></a>00255
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<a name="l00256"></a>00256
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<a name="l00257"></a>00257
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<a name="l00258"></a>00258
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</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;
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<a href="http://www.doxygen.org/index.html">
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<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.3 </small></address>
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</body>
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</html>
FCL/sftools/depl/docscontent