Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_number_store_original_implementation__v2_8cpp_source.html
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
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<h1>examples/Basics/ExtensionPattern/src_original_v2/NumberStoreOriginalImplementation_v2.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (c) 2000-2009 Nokia Corporation and/or its subsidiary(-ies).</span>
<a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span>
<a name="l00003"></a>00003 <span class="comment">// This component and the accompanying materials are made available</span>
<a name="l00004"></a>00004 <span class="comment">// under the terms of "Eclipse Public License v1.0"</span>
<a name="l00005"></a>00005 <span class="comment">// which accompanies this distribution, and is available</span>
<a name="l00006"></a>00006 <span class="comment">// at the URL "http://www.eclipse.org/legal/epl-v10.html".</span>
<a name="l00007"></a>00007 <span class="comment">//</span>
<a name="l00008"></a>00008 <span class="comment">// Initial Contributors:</span>
<a name="l00009"></a>00009 <span class="comment">// Nokia Corporation - initial contribution.</span>
<a name="l00010"></a>00010 <span class="comment">//</span>
<a name="l00011"></a>00011 <span class="comment">// Contributors:</span>
<a name="l00012"></a>00012 <span class="comment">//</span>
<a name="l00013"></a>00013 <span class="comment">// Description:</span>
<a name="l00014"></a>00014 <span class="comment">// CPP file demonstrating Extension DLL pattern</span>
<a name="l00015"></a>00015 <span class="comment">// This file contains the original implementation of the CNumberStore function.</span>
<a name="l00016"></a>00016 <span class="comment">// This file has _not_ been modified in order to add public extension functions.</span>
<a name="l00017"></a>00017 <span class="comment">// The only extension is to add the private "DoMultiplyNumbers" function which is</span>
<a name="l00018"></a>00018 <span class="comment">// deliberately "private" to stop code calling it. It must be called through the </span>
<a name="l00019"></a>00019 <span class="comment">// public "MultiplyNumbers" function which is available in the extension dll.</span>
<a name="l00020"></a>00020 <span class="comment">//</span>
<a name="l00021"></a>00021
<a name="l00022"></a>00022
<a name="l00023"></a>00023 <span class="preprocessor">#include <NumberStore.h></span>
<a name="l00024"></a>00024
<a name="l00025"></a>00025
<a name="l00026"></a>00026 <span class="comment">//This constant is defined in the CPP to demonstrate an intrusive change; </span>
<a name="l00027"></a>00027 <span class="comment">//DoMultiplyNumbers must be implemented in this DLL in order to see this const </span>
<a name="l00028"></a>00028 <span class="keyword">const</span> TInt KMagicMultiplyer=2;
<a name="l00029"></a>00029
<a name="l00030"></a>00030 <span class="comment">//Function implementations of all _original_ functions</span>
<a name="l00031"></a>00031
<a name="l00032"></a>00032 EXPORT_C CNumberStore::CNumberStore ()
<a name="l00033"></a>00033 {
<a name="l00034"></a>00034 }
<a name="l00035"></a>00035
<a name="l00036"></a>00036 EXPORT_C CNumberStore::CNumberStore (TInt aNumber1, TInt aNumber2)
<a name="l00037"></a>00037 {
<a name="l00038"></a>00038 SetNumber1(aNumber1);
<a name="l00039"></a>00039 SetNumber2(aNumber2);
<a name="l00040"></a>00040 }
<a name="l00041"></a>00041
<a name="l00042"></a>00042 EXPORT_C <span class="keywordtype">void</span> CNumberStore::SetNumber1 (TInt aNumber1)
<a name="l00043"></a>00043 {
<a name="l00044"></a>00044 iNumber1=aNumber1;
<a name="l00045"></a>00045 }
<a name="l00046"></a>00046
<a name="l00047"></a>00047 EXPORT_C <span class="keywordtype">void</span> CNumberStore::SetNumber2 (TInt aNumber2)
<a name="l00048"></a>00048 {
<a name="l00049"></a>00049 iNumber2=aNumber2;
<a name="l00050"></a>00050 }
<a name="l00051"></a>00051
<a name="l00052"></a>00052 EXPORT_C TInt CNumberStore::Number1 ()<span class="keyword"> const</span>
<a name="l00053"></a>00053 <span class="keyword"> </span>{
<a name="l00054"></a>00054 <span class="keywordflow">return</span> iNumber1;
<a name="l00055"></a>00055 }
<a name="l00056"></a>00056
<a name="l00057"></a>00057 EXPORT_C TInt CNumberStore::Number2 ()<span class="keyword"> const</span>
<a name="l00058"></a>00058 <span class="keyword"> </span>{
<a name="l00059"></a>00059 <span class="keywordflow">return</span> iNumber2;
<a name="l00060"></a>00060 }
<a name="l00061"></a>00061
<a name="l00062"></a>00062 <span class="comment">// Five new functions added in version 2 of the DLL</span>
<a name="l00063"></a>00063 <span class="comment">// Each of these set to panic to demonstrate if any legacy code calls them inadvertently</span>
<a name="l00064"></a>00064 EXPORT_C <span class="keywordtype">void</span> NewOwnerFunction1()
<a name="l00065"></a>00065 {
<a name="l00066"></a>00066 User::Panic(_L(<span class="stringliteral">"New Function Called"</span>),1);
<a name="l00067"></a>00067 }
<a name="l00068"></a>00068
<a name="l00069"></a>00069 EXPORT_C <span class="keywordtype">void</span> NewOwnerFunction2()
<a name="l00070"></a>00070 {
<a name="l00071"></a>00071 User::Panic(_L(<span class="stringliteral">"New Function Called"</span>),2);
<a name="l00072"></a>00072 }
<a name="l00073"></a>00073
<a name="l00074"></a>00074 EXPORT_C <span class="keywordtype">void</span> NewOwnerFunction3()
<a name="l00075"></a>00075 {
<a name="l00076"></a>00076 User::Panic(_L(<span class="stringliteral">"New Function Called"</span>),3);
<a name="l00077"></a>00077 }
<a name="l00078"></a>00078
<a name="l00079"></a>00079 EXPORT_C <span class="keywordtype">void</span> NewOwnerFunction4()
<a name="l00080"></a>00080 {
<a name="l00081"></a>00081 User::Panic(_L(<span class="stringliteral">"New Function Called"</span>),4);
<a name="l00082"></a>00082 }
<a name="l00083"></a>00083
<a name="l00084"></a>00084 EXPORT_C <span class="keywordtype">void</span> NewOwnerFunction5()
<a name="l00085"></a>00085 {
<a name="l00086"></a>00086 User::Panic(_L(<span class="stringliteral">"New Function Called"</span>),5);
<a name="l00087"></a>00087 }
<a name="l00088"></a>00088
<a name="l00089"></a>00089 <span class="comment">//Function implementations of private functions which are only used by the extension dll</span>
<a name="l00090"></a>00090 <span class="comment">//Note that this function occurs at a different ordinal position in the lib / def file due</span>
<a name="l00091"></a>00091 <span class="comment">//to the addition of the 5 new functions above</span>
<a name="l00092"></a>00092 <span class="comment">//This function must be defined in this file so it can see KMagicMultiplyer.</span>
<a name="l00093"></a>00093 EXPORT_C TInt CNumberStore::DoMultiplyNumbers()<span class="keyword"> const</span>
<a name="l00094"></a>00094 <span class="keyword"> </span>{
<a name="l00095"></a>00095 <span class="keywordflow">return</span> (iNumber1*iNumber2*KMagicMultiplyer);
<a name="l00096"></a>00096 }
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