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Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/publishpe_8cpp_source.html
author Dominic Pinkman <dominic.pinkman@nokia.com>
Fri, 13 Aug 2010 16:47:46 +0100
changeset 14 578be2adaf3e
parent 6 43e37759235e
permissions -rw-r--r--
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
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<title>TB9.2 Example Applications: examples/Base/IPC/pubsub/publishpe.cpp Source File</title>
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<link href="tabs.css" rel="stylesheet" type="text/css"/>
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<link href="doxygen.css" rel="stylesheet" type="text/css"/>
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</head>
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<body>
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<!-- Generated by Doxygen 1.6.2 -->
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<h1>examples/Base/IPC/pubsub/publishpe.cpp</h1><a href="publishpe_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 &quot;Eclipse Public License v1.0&quot;</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 &quot;http://www.eclipse.org/legal/epl-v10.html&quot;.</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">// Demonstrates the pure event distribution pattern of publishing an integer property</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="l00023"></a>00023 <span class="preprocessor">#include &quot;<a class="code" href="publishpe_8h.html">publishpe.h</a>&quot;</span>
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<a name="l00024"></a>00024
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<a name="l00025"></a>00025 LOCAL_D CConsoleBase* console;
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<a name="l00026"></a>00026
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<a name="l00027"></a>00027 <span class="keywordtype">void</span> DoExampleL()
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<a name="l00028"></a>00028         {
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<a name="l00029"></a>00029         console-&gt;Printf(KTxtPEPublish);
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<a name="l00030"></a>00030         RProperty myProperty;
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<a name="l00031"></a>00031
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<a name="l00032"></a>00032         <span class="comment">// Define the property and create a handle to it</span>
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<a name="l00033"></a>00033         User::LeaveIfError(RProperty::Define(KMyPropertyCat, KMyPropertyName,RProperty::EInt,KAllowAllPolicy,KAllowAllPolicy));
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<a name="l00034"></a>00034         User::LeaveIfError(myProperty.Attach(KMyPropertyCat,KMyPropertyName,EOwnerThread));
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<a name="l00035"></a>00035
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<a name="l00036"></a>00036         <span class="comment">// The value of the property</span>
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<a name="l00037"></a>00037         TInt value;
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<a name="l00038"></a>00038
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<a name="l00039"></a>00039         <span class="comment">// Publish the property after every 3 seconds</span>
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<a name="l00040"></a>00040         <span class="keywordflow">for</span>(TInt ix = 0; ix &lt;= KMax ; ix += 20)
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<a name="l00041"></a>00041                 {
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<a name="l00042"></a>00042                 User::After(KTimeInterval);
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<a name="l00043"></a>00043                 <span class="comment">// Publish random values</span>
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<a name="l00044"></a>00044                 <span class="comment">// In the pure event pattern of publishing, the value of the property is insignificant</span>
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<a name="l00045"></a>00045                 <span class="comment">// Multiple publishing is only to let the subscriber know that an event has occurred</span>
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<a name="l00046"></a>00046                 value = Math::Random();
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<a name="l00047"></a>00047                 console-&gt;Printf(KTxtInt,value);
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<a name="l00048"></a>00048                 User::LeaveIfError(myProperty.Set(value));
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<a name="l00049"></a>00049                 }
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<a name="l00050"></a>00050
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<a name="l00051"></a>00051         <span class="comment">// Free the handle to the property</span>
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<a name="l00052"></a>00052         myProperty.Close();
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<a name="l00053"></a>00053
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<a name="l00054"></a>00054         <span class="comment">// The publisher has finished so delete the property</span>
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<a name="l00055"></a>00055         User::LeaveIfError(RProperty::Delete(KMyPropertyCat,KMyPropertyName));
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<a name="l00056"></a>00056         }
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<a name="l00057"></a>00057
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<a name="l00058"></a><a class="code" href="publishpe_8cpp.html#a0f358e9c4355138f629b8c4f37310295">00058</a> GLDEF_C TInt E32Main()
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<a name="l00059"></a>00059         {
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<a name="l00060"></a>00060         __UHEAP_MARK;
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<a name="l00061"></a>00061         CTrapCleanup* cleanup = CTrapCleanup::New();
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<a name="l00062"></a>00062
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<a name="l00063"></a>00063         TRAPD(createError, console = Console::NewL(KTextConsoleTitle, TSize(KConsFullScreen,KConsFullScreen)));
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<a name="l00064"></a>00064         <span class="keywordflow">if</span> (createError)
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<a name="l00065"></a>00065                 <span class="keywordflow">return</span> createError;
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<a name="l00066"></a>00066
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<a name="l00067"></a>00067         TRAPD(mainError, DoExampleL());
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<a name="l00068"></a>00068         <span class="keywordflow">if</span> (mainError)
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<a name="l00069"></a>00069                 console-&gt;Printf(KTextFailed, mainError);
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<a name="l00070"></a>00070         console-&gt;Printf(KTextPressAnyKey);
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<a name="l00071"></a>00071         console-&gt;Getch();
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<a name="l00072"></a>00072
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<a name="l00073"></a>00073         <span class="keyword">delete</span> console;
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<a name="l00074"></a>00074         <span class="keyword">delete</span> cleanup;
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<a name="l00075"></a>00075         __UHEAP_MARKEND;
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<a name="l00076"></a>00076         <span class="keywordflow">return</span> KErrNone;
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<a name="l00077"></a>00077         }
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</pre></div></div>
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<hr size="1"/><address style="text-align: right;"><small>Generated by&nbsp;
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<a href="http://www.doxygen.org/index.html">
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<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.2 </small></address>
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</body>
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</html>
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