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8 <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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9 <a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span> |
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10 <a name="l00003"></a>00003 <span class="comment">// This component and the accompanying materials are made available</span> |
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11 <a name="l00004"></a>00004 <span class="comment">// under the terms of "Eclipse Public License v1.0"</span> |
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12 <a name="l00005"></a>00005 <span class="comment">// which accompanies this distribution, and is available</span> |
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13 <a name="l00006"></a>00006 <span class="comment">// at the URL "http://www.eclipse.org/legal/epl-v10.html".</span> |
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14 <a name="l00007"></a>00007 <span class="comment">//</span> |
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15 <a name="l00008"></a>00008 <span class="comment">// Initial Contributors:</span> |
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16 <a name="l00009"></a>00009 <span class="comment">// Nokia Corporation - initial contribution.</span> |
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17 <a name="l00010"></a>00010 <span class="comment">//</span> |
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18 <a name="l00011"></a>00011 <span class="comment">// Contributors:</span> |
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19 <a name="l00012"></a>00012 <span class="comment">//</span> |
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20 <a name="l00013"></a>00013 <span class="comment">// Description:</span> |
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21 <a name="l00014"></a>00014 <span class="comment">// Examples to demonstrate the basic ideas of</span> |
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22 <a name="l00015"></a>00015 <span class="comment">// pointer descriptors. </span> |
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23 <a name="l00016"></a>00016 <span class="comment">//</span> |
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24 <a name="l00017"></a>00017 |
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25 <a name="l00018"></a>00018 <span class="preprocessor">#include "CommonFramework.h"</span> |
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26 <a name="l00019"></a>00019 |
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27 <a name="l00020"></a>00020 <span class="comment">//</span> |
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28 <a name="l00021"></a>00021 <span class="comment">// Common literal text</span> |
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29 <a name="l00022"></a>00022 <span class="comment">//</span> |
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30 <a name="l00023"></a>00023 _LIT(KTxtHiTHere,<span class="stringliteral">"Hi there"</span>); |
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31 <a name="l00024"></a>00024 _LIT(KTxtHaveNiceDay,<span class="stringliteral">"Have a nice day!"</span>); |
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32 <a name="l00025"></a>00025 |
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33 <a name="l00026"></a>00026 <span class="comment">//</span> |
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34 <a name="l00027"></a>00027 <span class="comment">// Common format strings</span> |
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35 <a name="l00028"></a>00028 <span class="comment">//</span> |
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36 <a name="l00029"></a>00029 _LIT(KCommonFormat1,<span class="stringliteral">"\"%s\"\n"</span>); |
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37 <a name="l00030"></a>00030 _LIT(KCommonFormat3,<span class="stringliteral">"length=%d; size=%d;\n"</span>); |
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38 <a name="l00031"></a>00031 _LIT(KCommonFormat5,<span class="stringliteral">"Ptr()=%x; Length()=%d; Size()=%d\n"</span>); |
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39 <a name="l00032"></a>00032 _LIT(KCommonFormat16,<span class="stringliteral">"MaxLength()=%d\n"</span>); |
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40 <a name="l00033"></a>00033 _LIT(KCommonFormat17,<span class="stringliteral">"\"%S\"; "</span>); |
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41 <a name="l00034"></a>00034 _LIT(KCommonFormat18,<span class="stringliteral">"Length()=%d; Size()=%d; "</span>); |
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42 <a name="l00035"></a>00035 |
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43 <a name="l00036"></a>00036 <span class="comment">// Do the example</span> |
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44 <a name="l00037"></a>00037 LOCAL_C <span class="keywordtype">void</span> doExampleL() |
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45 <a name="l00038"></a>00038 { |
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46 <a name="l00039"></a>00039 <span class="comment">// Define a constant C style (ASCII) string</span> |
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47 <a name="l00040"></a>00040 <span class="keyword">const</span> TText8* cstr8 = (TText8*)<span class="stringliteral">"Hello World!"</span>; |
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48 <a name="l00041"></a>00041 |
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49 <a name="l00042"></a>00042 <span class="comment">// Look at it.</span> |
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50 <a name="l00043"></a>00043 |
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51 <a name="l00044"></a>00044 TBuf<12> temp; |
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52 <a name="l00045"></a>00045 temp.Copy(TPtrC8(cstr8)); |
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53 <a name="l00046"></a>00046 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(temp); |
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54 <a name="l00047"></a>00047 |
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55 <a name="l00048"></a>00048 <span class="comment">// A TPtrC8 descriptor represents the</span> |
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56 <a name="l00049"></a>00049 <span class="comment">// ASCII text; contrast this with the</span> |
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57 <a name="l00050"></a>00050 <span class="comment">// basic C string </span> |
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58 <a name="l00051"></a>00051 TPtrC8 ptrC8(cstr8); |
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59 <a name="l00052"></a>00052 |
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60 <a name="l00053"></a>00053 <span class="comment">// Look at:</span> |
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61 <a name="l00054"></a>00054 <span class="comment">// 1. Address of C string</span> |
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62 <a name="l00055"></a>00055 <span class="comment">// 2. Length of the C string</span> |
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63 <a name="l00056"></a>00056 <span class="comment">// 3. Size of the string.</span> |
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64 <a name="l00057"></a>00057 <span class="comment">// Size is 13 bytes to allow for </span> |
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65 <a name="l00058"></a>00058 <span class="comment">// the terminating NULL.</span> |
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66 <a name="l00059"></a>00059 <span class="comment">// </span> |
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67 <a name="l00060"></a>00060 _LIT(KFormat2,<span class="stringliteral">"\nNarrow C string at %x; "</span>); |
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68 <a name="l00061"></a>00061 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KFormat2,cstr8); |
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69 <a name="l00062"></a>00062 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KCommonFormat3,12,<span class="keyword">sizeof</span>(<span class="stringliteral">"Hello World!"</span>)); |
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70 <a name="l00063"></a>00063 |
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71 <a name="l00064"></a>00064 <span class="comment">// Look at:</span> |
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72 <a name="l00065"></a>00065 <span class="comment">// 1. Address of descriptor</span> |
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73 <a name="l00066"></a>00066 <span class="comment">// 2. Address of descriptor data area</span> |
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74 <a name="l00067"></a>00067 <span class="comment">// 3. Length of descriptor</span> |
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75 <a name="l00068"></a>00068 <span class="comment">// 4. Size of descriptor</span> |
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76 <a name="l00069"></a>00069 <span class="comment">// Address of descriptor data area is the </span> |
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77 <a name="l00070"></a>00070 <span class="comment">// same as the address of the C string. </span> |
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78 <a name="l00071"></a>00071 <span class="comment">// The Size of the descriptor data is only</span> |
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79 <a name="l00072"></a>00072 <span class="comment">// 12 bytes (1 byte for each character).</span> |
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80 <a name="l00073"></a>00073 _LIT(KFormat4,<span class="stringliteral">"8-bit pointer-descriptor at %x; "</span>); |
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81 <a name="l00074"></a>00074 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KFormat4,&ptrC8); |
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82 <a name="l00075"></a>00075 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->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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85 <a name="l00078"></a>00078 <span class="comment">// Define a constant C style (Wide) string</span> |
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86 <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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88 <a name="l00081"></a>00081 <span class="comment">// A TPtrC16 descriptor represents the</span> |
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89 <a name="l00082"></a>00082 <span class="comment">// wide (i.e. double-byte character) text;</span> |
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90 <a name="l00083"></a>00083 <span class="comment">// contrast this with the basic C string. </span> |
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91 <a name="l00084"></a>00084 TPtrC16 ptrC16(cstr16); |
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92 <a name="l00085"></a>00085 |
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93 <a name="l00086"></a>00086 _LIT(KFormat7,<span class="stringliteral">"\nWide C string at %x; "</span>); |
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94 <a name="l00087"></a>00087 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KFormat7,cstr16); |
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95 <a name="l00088"></a>00088 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KCommonFormat3,12,<span class="keyword">sizeof</span>(L<span class="stringliteral">"Hello World!"</span>)); |
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96 <a name="l00089"></a>00089 |
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97 <a name="l00090"></a>00090 <span class="comment">// Look at:</span> |
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98 <a name="l00091"></a>00091 <span class="comment">// 1. Address of descriptor</span> |
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99 <a name="l00092"></a>00092 <span class="comment">// 2. Address of descriptor data area</span> |
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100 <a name="l00093"></a>00093 <span class="comment">// 3. Length of descriptor</span> |
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101 <a name="l00094"></a>00094 <span class="comment">// 4. Size of descriptor</span> |
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102 <a name="l00095"></a>00095 <span class="comment">// Address of descriptor data area is the</span> |
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103 <a name="l00096"></a>00096 <span class="comment">// same as the address of the C string.</span> |
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104 <a name="l00097"></a>00097 <span class="comment">// The size of descriptor data is only</span> |
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105 <a name="l00098"></a>00098 <span class="comment">// 24 bytes (2 bytes for each character).</span> |
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106 <a name="l00099"></a>00099 _LIT(KFormat6,<span class="stringliteral">"16-bit pointer-descriptor at %x; "</span>); |
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107 <a name="l00100"></a>00100 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KFormat6,&ptrC16); |
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108 <a name="l00101"></a>00101 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KCommonFormat5,ptrC16.Ptr(),ptrC16.Length(),ptrC16.Size()); |
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109 <a name="l00102"></a>00102 |
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110 <a name="l00103"></a>00103 |
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111 <a name="l00104"></a>00104 <span class="comment">// Use the _S macro to define a constant </span> |
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112 <a name="l00105"></a>00105 <span class="comment">// C style string of the appropriate width.</span> |
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113 <a name="l00106"></a>00106 <span class="comment">// The TText variant is defined at build</span> |
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114 <a name="l00107"></a>00107 <span class="comment">// time as TText16 </span> |
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115 <a name="l00108"></a>00108 <span class="comment">// (In earlier times this could also have been TText8,</span> |
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116 <a name="l00109"></a>00109 <span class="comment">// but in all current versions, TText16 is the standard).</span> |
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117 <a name="l00110"></a>00110 <span class="keyword">const</span> TText* cstr = _S(<span class="stringliteral">"Hello World!"</span>); |
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118 <a name="l00111"></a>00111 |
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119 <a name="l00112"></a>00112 <span class="comment">// TPtrC descriptor represents the text;</span> |
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120 <a name="l00113"></a>00113 <span class="comment">// the TPtrC variant is defined at build </span> |
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121 <a name="l00114"></a>00114 <span class="comment">// time as TPtrC16.</span> |
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122 <a name="l00115"></a>00115 TPtrC ptrc(cstr); |
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123 <a name="l00116"></a>00116 |
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124 <a name="l00117"></a>00117 _LIT(KFormat8,<span class="stringliteral">"\nBuild-dependent TText at %x; "</span>); |
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125 <a name="l00118"></a>00118 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KFormat8,cstr); |
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126 <a name="l00119"></a>00119 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KCommonFormat3,12,<span class="keyword">sizeof</span>( |
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127 <a name="l00120"></a>00120 #ifdef _UNICODE |
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128 <a name="l00121"></a>00121 L<span class="stringliteral">"Hello world!"</span> |
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129 <a name="l00122"></a>00122 #<span class="keywordflow">else</span> |
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130 <a name="l00123"></a>00123 <span class="stringliteral">"Hello world!"</span> |
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131 <a name="l00124"></a>00124 #endif |
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132 <a name="l00125"></a>00125 ) |
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133 <a name="l00126"></a>00126 ); |
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134 <a name="l00127"></a>00127 |
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135 <a name="l00128"></a>00128 <span class="comment">// Look at descriptor basics.</span> |
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136 <a name="l00129"></a>00129 _LIT(KTxtBuildDependentptdesc,<span class="stringliteral">"Build-dependent pointer-descriptor"</span>); |
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137 <a name="l00130"></a>00130 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KTxtBuildDependentptdesc); |
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138 <a name="l00131"></a>00131 |
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139 <a name="l00132"></a>00132 _LIT(KFormat9,<span class="stringliteral">" at %x; "</span>); |
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140 <a name="l00133"></a>00133 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KFormat9,&ptrc); |
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141 <a name="l00134"></a>00134 _LIT(KFormat10,<span class="stringliteral">"Ptr()=%x;\n"</span>); |
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142 <a name="l00135"></a>00135 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KFormat10,ptrc.Ptr()); |
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143 <a name="l00136"></a>00136 _LIT(KFormat11,<span class="stringliteral">" Length()=%d; Size()=%d\n"</span>); |
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144 <a name="l00137"></a>00137 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KFormat11,ptrc.Length(),ptrc.Size()); |
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145 <a name="l00138"></a>00138 |
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146 <a name="l00139"></a>00139 <span class="comment">// The _LIT macro is most useful. It constructs</span> |
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147 <a name="l00140"></a>00140 <span class="comment">// a family of constant descriptor classes TLitC<Tint>. </span> |
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148 <a name="l00141"></a>00141 <span class="comment">// The constant generated by the _LIT macro:</span> |
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149 <a name="l00142"></a>00142 <span class="comment">// 1. can be passed as 'const TDesC&' type</span> |
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150 <a name="l00143"></a>00143 <span class="comment">// 2. has an address-of operator 'operator&()' which returns a 'const TDesC*' type</span> |
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151 <a name="l00144"></a>00144 <span class="comment">// 3. can be passed as a TRefByValue<const TDesC></span> |
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152 <a name="l00145"></a>00145 <span class="comment">//</span> |
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153 <a name="l00146"></a>00146 <span class="comment">// The _L macro constructs a TPtrC but should be avoided </span> |
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154 <a name="l00147"></a>00147 <span class="comment">// where possible on the grounds of efficiency.</span> |
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155 <a name="l00148"></a>00148 <span class="comment">// Use the _LIT macro instead.</span> |
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156 <a name="l00149"></a>00149 |
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157 <a name="l00150"></a>00150 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->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-->TPtr basic concepts"</span>); |
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162 <a name="l00155"></a>00155 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->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>->Printf(KTxtPressToContinue); |
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165 <a name="l00158"></a>00158 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->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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169 <a name="l00162"></a>00162 <span class="comment">// The need for the NULL forces cstr to</span> |
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170 <a name="l00163"></a>00163 <span class="comment">// have a length of 16.</span> |
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171 <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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172 <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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173 <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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175 <a name="l00168"></a>00168 <span class="comment">// Look at it.</span> |
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176 <a name="l00169"></a>00169 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KCommonFormat1,&str[0]); |
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177 <a name="l00170"></a>00170 |
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178 <a name="l00171"></a>00171 <span class="comment">// TPtr descriptor represents the text.</span> |
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179 <a name="l00172"></a>00172 <span class="comment">// Descriptor length is 15 but max length</span> |
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180 <a name="l00173"></a>00173 <span class="comment">// is 16. The descriptor does not need the</span> |
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181 <a name="l00174"></a>00174 <span class="comment">// terminating NULL, so in this example,</span> |
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182 <a name="l00175"></a>00175 <span class="comment">// the last data position is spare. </span> |
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183 <a name="l00176"></a>00176 TPtr ptr(&str[0],15,16); |
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184 <a name="l00177"></a>00177 |
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185 <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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187 <a name="l00180"></a>00180 <span class="comment">// 2. Length of the C string</span> |
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188 <a name="l00181"></a>00181 <span class="comment">// 3. Size of the string</span> |
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189 <a name="l00182"></a>00182 <span class="comment">// Size is 16 bytes to allow for</span> |
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190 <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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192 <a name="l00185"></a>00185 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KFormat12,str); |
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193 <a name="l00186"></a>00186 _LIT(KFormat13,<span class="stringliteral">"length=%d; size=%d\n"</span>); |
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194 <a name="l00187"></a>00187 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->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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197 <a name="l00190"></a>00190 <span class="comment">// 1. Address of descriptor</span> |
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198 <a name="l00191"></a>00191 <span class="comment">// 2. Address of descriptor area</span> |
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199 <a name="l00192"></a>00192 <span class="comment">// 3. Length of descriptor</span> |
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200 <a name="l00193"></a>00193 <span class="comment">// 4. Size of descriptor</span> |
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201 <a name="l00194"></a>00194 <span class="comment">// 5. Max length of descriptor </span> |
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202 <a name="l00195"></a>00195 <span class="comment">// Address of descriptor data area is the </span> |
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203 <a name="l00196"></a>00196 <span class="comment">// same as the address of cstr[]. The</span> |
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204 <a name="l00197"></a>00197 <span class="comment">// descriptor length is 15 but the maximum</span> |
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205 <a name="l00198"></a>00198 <span class="comment">// length is 16.</span> |
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206 <a name="l00199"></a>00199 _LIT(KFormat14,<span class="stringliteral">"Descriptor at %x; "</span>); |
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207 <a name="l00200"></a>00200 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KFormat14,&ptr); |
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208 <a name="l00201"></a>00201 _LIT(KFormat15,<span class="stringliteral">"Ptr()=%x; Length()=%d; Size()=%d; "</span>); |
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209 <a name="l00202"></a>00202 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KFormat15,ptr.Ptr(),ptr.Length(),ptr.Size()); |
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210 <a name="l00203"></a>00203 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KCommonFormat16,ptr.MaxLength()); |
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211 <a name="l00204"></a>00204 |
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212 <a name="l00205"></a>00205 <span class="comment">// The data can be replaced using the </span> |
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213 <a name="l00206"></a>00206 <span class="comment">// assignment operator. Note the reference to</span> |
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214 <a name="l00207"></a>00207 <span class="comment">// the TLitC<> KTxtHiTHere constructed using the _LIT macro.</span> |
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215 <a name="l00208"></a>00208 ptr = KTxtHiTHere; |
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216 <a name="l00209"></a>00209 |
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217 <a name="l00210"></a>00210 <span class="comment">// Length of descriptor is now 8 but maximum</span> |
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218 <a name="l00211"></a>00211 <span class="comment">// length remains at 16.</span> |
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219 <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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221 <a name="l00214"></a>00214 <span class="comment">// defined by str[]) is </span> |
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222 <a name="l00215"></a>00215 <span class="comment">// now "Hi there")</span> |
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223 <a name="l00216"></a>00216 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KCommonFormat17,&ptr); |
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224 <a name="l00217"></a>00217 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KCommonFormat18,ptr.Length(),ptr.Size()); |
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225 <a name="l00218"></a>00218 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KCommonFormat16,ptr.MaxLength()); |
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226 <a name="l00219"></a>00219 |
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227 <a name="l00220"></a>00220 <span class="comment">// Length can be changed; data represented </span> |
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228 <a name="l00221"></a>00221 <span class="comment">// by the descriptor is now "Hi"</span> |
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229 <a name="l00222"></a>00222 ptr.SetLength(2); |
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230 <a name="l00223"></a>00223 |
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231 <a name="l00224"></a>00224 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KCommonFormat17,&ptr); |
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232 <a name="l00225"></a>00225 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KCommonFormat18,ptr.Length(),ptr.Size()); |
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233 <a name="l00226"></a>00226 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KCommonFormat16,ptr.MaxLength()); |
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234 <a name="l00227"></a>00227 |
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235 <a name="l00228"></a>00228 <span class="comment">// Length can be set to zero; NO data </span> |
|
236 <a name="l00229"></a>00229 <span class="comment">// is now represented by the</span> |
|
237 <a name="l00230"></a>00230 <span class="comment">// descriptor but maximum length is still 16</span> |
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238 <a name="l00231"></a>00231 ptr.Zero(); |
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239 <a name="l00232"></a>00232 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KCommonFormat17,&ptr); |
|
240 <a name="l00233"></a>00233 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KCommonFormat18,ptr.Length(),ptr.Size()); |
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241 <a name="l00234"></a>00234 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KCommonFormat16,ptr.MaxLength()); |
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242 <a name="l00235"></a>00235 |
|
243 <a name="l00236"></a>00236 <span class="comment">// Replace text with text of length 16, </span> |
|
244 <a name="l00237"></a>00237 <span class="comment">// the maximum. </span> |
|
245 <a name="l00238"></a>00238 ptr = KTxtHaveNiceDay; |
|
246 <a name="l00239"></a>00239 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KCommonFormat17,&ptr); |
|
247 <a name="l00240"></a>00240 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KCommonFormat18,ptr.Length(),ptr.Size()); |
|
248 <a name="l00241"></a>00241 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KCommonFormat16,ptr.MaxLength()); |
|
249 <a name="l00242"></a>00242 |
|
250 <a name="l00243"></a>00243 <span class="comment">// adding another character causes panic !!</span> |
|
251 <a name="l00244"></a>00244 <span class="comment">// length would be > maximum.</span> |
|
252 <a name="l00245"></a>00245 <span class="comment">// </span> |
|
253 <a name="l00246"></a>00246 <span class="comment">// Remove the "//" marks on the next line</span> |
|
254 <a name="l00247"></a>00247 <span class="comment">// to see this happen</span> |
|
255 <a name="l00248"></a>00248 <span class="comment">//ptr.Append('@');</span> |
|
256 <a name="l00249"></a>00249 } |
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257 <a name="l00250"></a>00250 |
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258 <a name="l00251"></a>00251 |
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259 <a name="l00252"></a>00252 |
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260 <a name="l00253"></a>00253 |
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261 <a name="l00254"></a>00254 |
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262 <a name="l00255"></a>00255 |
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263 <a name="l00256"></a>00256 |
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264 <a name="l00257"></a>00257 |
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265 <a name="l00258"></a>00258 |
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266 </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 |
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267 <a href="http://www.doxygen.org/index.html"> |
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268 <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.3 </small></address> |
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269 </body> |
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270 </html> |