Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_c_msg_q_active_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/Base/MessageQueueExample/src/CMsgQActive.cpp</h1><a href="_c_msg_q_active_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>
<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">// The following class opens the InverterOutQ message Queue and displays </span>
<a name="l00015"></a>00015 <span class="comment">// recieved data in console.</span>
<a name="l00016"></a>00016 <span class="comment">//</span>
<a name="l00017"></a>00017
<a name="l00018"></a>00018
<a name="l00019"></a>00019
<a name="l00025"></a>00025 <span class="preprocessor">#include "CMsgQActive.h"</span>
<a name="l00026"></a>00026 <span class="preprocessor">#include "e32cons.h"</span>
<a name="l00027"></a>00027
<a name="l00028"></a>00028 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KCommonFormat2,<span class="stringliteral">"%S"</span>);
<a name="l00029"></a>00029 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTitle , <span class="stringliteral">"OutputMessage"</span>);
<a name="l00030"></a>00030
<a name="l00034"></a><a class="code" href="class_c_msg_q_active.html#a09f25693ce20e9d35ecf6256b38d516c">00034</a> <a class="code" href="class_c_msg_q_active.html#a09f25693ce20e9d35ecf6256b38d516c">CMsgQActive::CMsgQActive</a>(TInt aPriority):CActive(aPriority)
<a name="l00035"></a>00035 {
<a name="l00036"></a>00036 CActiveScheduler::Add( <span class="keyword">this</span> );
<a name="l00037"></a>00037 }
<a name="l00038"></a>00038
<a name="l00039"></a>00039
<a name="l00040"></a>00040 <a class="code" href="class_c_msg_q_active.html">CMsgQActive</a>* CMsgQActive::NewL(TInt aPriority)
<a name="l00041"></a>00041 {
<a name="l00042"></a>00042 <a class="code" href="class_c_msg_q_active.html">CMsgQActive</a>* <span class="keyword">self</span>=<span class="keyword">new</span>(ELeave)<a class="code" href="class_c_msg_q_active.html#a09f25693ce20e9d35ecf6256b38d516c">CMsgQActive</a>(aPriority);
<a name="l00043"></a>00043 CleanupStack::PushL(<span class="keyword">self</span>);
<a name="l00044"></a>00044 <span class="keyword">self</span>->ConstructL();
<a name="l00045"></a>00045 CleanupStack::Pop(<span class="keyword">self</span>);
<a name="l00046"></a>00046 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00047"></a>00047 }
<a name="l00048"></a>00048
<a name="l00052"></a><a class="code" href="class_c_msg_q_active.html#ae600949e5c701ee556a2f457ef2414a3">00052</a> <span class="keywordtype">void</span> <a class="code" href="class_c_msg_q_active.html#ae600949e5c701ee556a2f457ef2414a3">CMsgQActive::ConstructL</a>()
<a name="l00053"></a>00053 {
<a name="l00054"></a>00054 iConsole = Console::NewL(KTitle, TSize(KConsFullScreen, KConsFullScreen));
<a name="l00055"></a>00055 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KWelcomeScreen,<span class="stringliteral">".......Words recieved from the inverter......\n"</span>);
<a name="l00056"></a>00056 iConsole->Printf(KWelcomeScreen);
<a name="l00057"></a>00057
<a name="l00058"></a>00058 <span class="comment">//Open the InverterOutQ Message Queue.</span>
<a name="l00059"></a>00059 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KGlobalInverterOutQ, <span class="stringliteral">"InverterOutQ"</span>);
<a name="l00060"></a>00060 User::LeaveIfError(iInverterOutQ.OpenGlobal(KGlobalInverterOutQ));
<a name="l00061"></a>00061 }
<a name="l00062"></a>00062
<a name="l00067"></a><a class="code" href="class_c_msg_q_active.html#a5753cfd0f59382c0811757825e0462f5">00067</a> <span class="keywordtype">void</span> <a class="code" href="class_c_msg_q_active.html#a5753cfd0f59382c0811757825e0462f5">CMsgQActive::StartRecieving</a>()
<a name="l00068"></a>00068 {
<a name="l00069"></a>00069 iInverterOutQ.NotifyDataAvailable(iStatus);
<a name="l00070"></a>00070 SetActive();
<a name="l00071"></a>00071 }
<a name="l00072"></a>00072
<a name="l00073"></a>00073 CMsgQActive::~CMsgQActive()
<a name="l00074"></a>00074 {
<a name="l00075"></a>00075 }
<a name="l00076"></a>00076
<a name="l00080"></a><a class="code" href="class_c_msg_q_active.html#a0562e2d68518460db5147b51cd89ca32">00080</a> <span class="keywordtype">void</span> <a class="code" href="class_c_msg_q_active.html#a0562e2d68518460db5147b51cd89ca32">CMsgQActive::DoCancel</a>()
<a name="l00081"></a>00081 {
<a name="l00082"></a>00082 <span class="comment">//Cancel any data which is present in the message Queue.</span>
<a name="l00083"></a>00083 iInverterOutQ.CancelDataAvailable();
<a name="l00084"></a>00084 <span class="keyword">delete</span> iConsole;
<a name="l00085"></a>00085 }
<a name="l00086"></a>00086
<a name="l00091"></a><a class="code" href="class_c_msg_q_active.html#aa09a136a396de91c207346ea74a00435">00091</a> <span class="keywordtype">void</span> <a class="code" href="class_c_msg_q_active.html#aa09a136a396de91c207346ea74a00435">CMsgQActive::RunL</a>()
<a name="l00092"></a>00092 {
<a name="l00093"></a>00093 <span class="comment">// Recieve all available messages from the message queue.</span>
<a name="l00094"></a>00094 iInverterOutQ.ReceiveBlocking(imsgQData);
<a name="l00095"></a>00095
<a name="l00096"></a>00096 <span class="comment">//Print the recieved message in the output message console.</span>
<a name="l00097"></a>00097 iConsole->Printf(KCommonFormat2,&imsgQData);
<a name="l00098"></a>00098
<a name="l00099"></a>00099 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KNextLine , <span class="stringliteral">"\n"</span>);
<a name="l00100"></a>00100 iConsole->Printf(KNextLine);
<a name="l00101"></a>00101
<a name="l00102"></a>00102 <span class="comment">// Make asynchronous request to be notified when data is available</span>
<a name="l00103"></a>00103 iInverterOutQ.NotifyDataAvailable(iStatus);
<a name="l00104"></a>00104 SetActive();
<a name="l00105"></a>00105 }
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