Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_device_discoverer_8cpp_source.html
author Dominic Pinkman <dominic.pinkman@nokia.com>
Fri, 13 Aug 2010 16:47:46 +0100
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Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
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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/ForumNokia/BluetoothPMPExample/src/DeviceDiscoverer.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/ForumNokia/BluetoothPMPExample/src/DeviceDiscoverer.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
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<a name="l00002"></a>00002 <span class="comment"> * Copyright © 2009 Nokia Corporation.</span>
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<a name="l00003"></a>00003 <span class="comment"> */</span>
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<a name="l00004"></a>00004 
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<a name="l00005"></a>00005 <span class="comment">// INCLUDE FILES</span>
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<a name="l00006"></a>00006 <span class="preprocessor">#include &quot;DeviceDiscoverer.h&quot;</span>
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<a name="l00008"></a>00008 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KBTLinkManagerTxt,<span class="stringliteral">&quot;BTLinkManager&quot;</span>);
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<a name="l00009"></a>00009 
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<a name="l00010"></a><a class="code" href="class_c_device_discoverer.html#a398f58248e421a888c463adcc53dc321">00010</a> <a class="code" href="class_c_device_discoverer.html">CDeviceDiscoverer</a>* <a class="code" href="class_c_device_discoverer.html#a398f58248e421a888c463adcc53dc321">CDeviceDiscoverer::NewL</a>(RSocketServ&amp; aSocketServ,
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<a name="l00011"></a>00011                                            <a class="code" href="class_m_device_disco_observer.html">MDeviceDiscoObserver</a>&amp; aObserver)
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<a name="l00012"></a>00012     {
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<a name="l00013"></a>00013     <a class="code" href="class_c_device_discoverer.html">CDeviceDiscoverer</a>* <span class="keyword">self</span> = <a class="code" href="class_c_device_discoverer.html#ad009466530d86638c239aebab062d0b5">CDeviceDiscoverer::NewLC</a>(aSocketServ, aObserver);
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<a name="l00014"></a>00014     CleanupStack::Pop(<span class="keyword">self</span>);
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<a name="l00015"></a>00015     <span class="keywordflow">return</span> <span class="keyword">self</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="l00019"></a><a class="code" href="class_c_device_discoverer.html#ad009466530d86638c239aebab062d0b5">00019</a> <a class="code" href="class_c_device_discoverer.html">CDeviceDiscoverer</a>* <a class="code" href="class_c_device_discoverer.html#ad009466530d86638c239aebab062d0b5">CDeviceDiscoverer::NewLC</a>(RSocketServ&amp; aSocketServ,
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<a name="l00020"></a>00020                                             <a class="code" href="class_m_device_disco_observer.html">MDeviceDiscoObserver</a>&amp; aObserver)
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<a name="l00021"></a>00021     {
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<a name="l00022"></a>00022     <a class="code" href="class_c_device_discoverer.html">CDeviceDiscoverer</a>* <span class="keyword">self</span> = <span class="keyword">new</span> (ELeave) <a class="code" href="class_c_device_discoverer.html">CDeviceDiscoverer</a>(aSocketServ,
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<a name="l00023"></a>00023         aObserver);
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<a name="l00024"></a>00024     CleanupStack::PushL(<span class="keyword">self</span>);
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<a name="l00025"></a>00025     <span class="keyword">self</span>-&gt;ConstructL();
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<a name="l00026"></a>00026     <span class="keywordflow">return</span> <span class="keyword">self</span>;
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<a name="l00027"></a>00027     }
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<a name="l00028"></a>00028 
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<a name="l00029"></a>00029 
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<a name="l00030"></a>00030 <span class="keywordtype">void</span> CDeviceDiscoverer::ConstructL()
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<a name="l00031"></a>00031     {
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<a name="l00032"></a>00032     }
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<a name="l00033"></a>00033 
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<a name="l00034"></a>00034 
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<a name="l00035"></a>00035 <span class="comment">// ----------------------------------------------------------------------------</span>
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<a name="l00036"></a>00036 <span class="comment">// CDeviceDiscoverer::CDeviceDiscoverer(RSocketServ *aSocketServ,</span>
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<a name="l00037"></a>00037 <span class="comment">//                                      MDeviceDiscoObserver *aObserver)</span>
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<a name="l00038"></a>00038 <span class="comment">//</span>
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<a name="l00039"></a>00039 <span class="comment">// constructor</span>
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<a name="l00040"></a>00040 <span class="comment">// ----------------------------------------------------------------------------</span>
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<a name="l00041"></a>00041 CDeviceDiscoverer::CDeviceDiscoverer(RSocketServ&amp; aSocketServ,
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<a name="l00042"></a>00042                                      <a class="code" href="class_m_device_disco_observer.html">MDeviceDiscoObserver</a>&amp; aObserver):
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<a name="l00043"></a>00043     CActive(CActive::EPriorityStandard),
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<a name="l00044"></a>00044     iSocketServ(aSocketServ),
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<a name="l00045"></a>00045     iObserver(aObserver)
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<a name="l00046"></a>00046     {
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<a name="l00047"></a>00047     CActiveScheduler::Add(<span class="keyword">this</span>);
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<a name="l00048"></a>00048     }
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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">// ----------------------------------------------------------------------------</span>
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<a name="l00052"></a>00052 <span class="comment">// CDeviceDiscoverer::~CDeviceDiscoverer()</span>
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<a name="l00053"></a>00053 <span class="comment">//</span>
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<a name="l00054"></a>00054 <span class="comment">// destructor</span>
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<a name="l00055"></a>00055 <span class="comment">// ----------------------------------------------------------------------------</span>
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<a name="l00056"></a><a class="code" href="class_c_device_discoverer.html#a338c70f66e1dedaa7ce4ad694168aa93">00056</a> <a class="code" href="class_c_device_discoverer.html#a338c70f66e1dedaa7ce4ad694168aa93">CDeviceDiscoverer::~CDeviceDiscoverer</a>()
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<a name="l00057"></a>00057     { 
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<a name="l00058"></a>00058     <span class="comment">// cancel active object</span>
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<a name="l00059"></a>00059     Cancel();
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<a name="l00060"></a>00060     iResolver.Close();
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<a name="l00061"></a>00061     }
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<a name="l00062"></a>00062 
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<a name="l00063"></a>00063 
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<a name="l00064"></a>00064 <span class="comment">// ----------------------------------------------------------------------------</span>
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<a name="l00065"></a>00065 <span class="comment">// CDeviceDiscoverer::DiscoverDevicesL(TDeviceDataList *aDevDataList)</span>
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<a name="l00066"></a>00066 <span class="comment">//</span>
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<a name="l00067"></a>00067 <span class="comment">// discover remote devices.  RHostResolver will be used to do the discovery.</span>
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<a name="l00068"></a>00068 <span class="comment">// any found devices will be placed in aDevDataList.</span>
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<a name="l00069"></a>00069 <span class="comment">// ----------------------------------------------------------------------------</span>
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<a name="l00070"></a><a class="code" href="class_c_device_discoverer.html#ac48267243d969875fb2b313ff77dbdc6">00070</a> <span class="keywordtype">void</span> <a class="code" href="class_c_device_discoverer.html#ac48267243d969875fb2b313ff77dbdc6">CDeviceDiscoverer::DiscoverDevicesL</a>(TDeviceDataList* aDevDataList)
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<a name="l00071"></a>00071     {
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<a name="l00072"></a>00072     <span class="keywordflow">if</span> (!IsActive())
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<a name="l00073"></a>00073         {
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<a name="l00074"></a>00074         <span class="comment">// initialize host resolver</span>
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<a name="l00075"></a>00075         <span class="comment">// load protocol for discovery</span>
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<a name="l00076"></a>00076         TProtocolDesc pdesc;
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<a name="l00077"></a>00077         User::LeaveIfError(iSocketServ.FindProtocol(KBTLinkManagerTxt(), pdesc));
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<a name="l00078"></a>00078 
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<a name="l00079"></a>00079         iResolver.Close();
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<a name="l00080"></a>00080         User::LeaveIfError(iResolver.Open(iSocketServ, pdesc.iAddrFamily, pdesc.iProtocol));
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<a name="l00081"></a>00081         
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<a name="l00082"></a>00082         <span class="comment">// wipe existing device data list, start fresh</span>
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<a name="l00083"></a>00083         iDevDataList=aDevDataList;
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<a name="l00084"></a>00084         iDevDataList-&gt;Reset();
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<a name="l00085"></a>00085 
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<a name="l00086"></a>00086         <span class="comment">// start device discovery by invoking remote address lookup</span>
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<a name="l00087"></a>00087 <span class="preprocessor">    #ifdef ENABLE_LIAC</span>
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<a name="l00088"></a>00088 <span class="preprocessor"></span>        TUint myIAC( iLIAC?KLIAC:KGIAC );
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<a name="l00089"></a>00089 
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<a name="l00090"></a>00090         iAddr.SetIAC( myIAC );
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<a name="l00091"></a>00091 <span class="preprocessor">    #else</span>
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<a name="l00092"></a>00092 <span class="preprocessor"></span>        iAddr.SetIAC( KGIAC );
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<a name="l00093"></a>00093 <span class="preprocessor">    #endif</span>
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<a name="l00094"></a>00094 <span class="preprocessor"></span>
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<a name="l00095"></a>00095         iAddr.SetAction(KHostResInquiry|KHostResName|KHostResIgnoreCache);
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<a name="l00096"></a>00096         iResolver.GetByAddress(iAddr, iEntry, iStatus);
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<a name="l00097"></a>00097         SetActive();
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<a name="l00098"></a>00098         }
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<a name="l00099"></a>00099     <span class="keywordflow">else</span>
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<a name="l00100"></a>00100         {
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<a name="l00101"></a>00101         User::Leave(KErrNotReady);
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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 
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<a name="l00105"></a>00105 
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<a name="l00106"></a><a class="code" href="class_c_device_discoverer.html#a827525f4196483e7648fa0941b04c401">00106</a> <span class="keywordtype">void</span> <a class="code" href="class_c_device_discoverer.html#a827525f4196483e7648fa0941b04c401">CDeviceDiscoverer::RunL</a>()
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<a name="l00107"></a>00107     {
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<a name="l00108"></a>00108     <span class="comment">// RHostResolver.GetByAddress(..) has completed, process results</span>
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<a name="l00109"></a>00109     <span class="keywordflow">if</span> ( iStatus!=KErrNone )
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<a name="l00110"></a>00110         {
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<a name="l00111"></a>00111         <span class="comment">// all devices (if any) done, notify </span>
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<a name="l00112"></a>00112         <span class="keywordflow">if</span> (iDevDataList-&gt;Count()&gt;0)
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<a name="l00113"></a>00113             {
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<a name="l00114"></a>00114             iObserver.<a class="code" href="class_m_device_disco_observer.html#a0c81cc1105d340428c4ec9ab792b3d8c">HandleDeviceDiscoveryComplete</a>(KErrNone);
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<a name="l00115"></a>00115             }
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<a name="l00116"></a>00116         <span class="keywordflow">else</span>
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<a name="l00117"></a>00117             {
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<a name="l00118"></a>00118             iObserver.<a class="code" href="class_m_device_disco_observer.html#a0c81cc1105d340428c4ec9ab792b3d8c">HandleDeviceDiscoveryComplete</a>(KErrNotFound);
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<a name="l00119"></a>00119             }
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<a name="l00120"></a>00120         }
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<a name="l00121"></a>00121     <span class="keywordflow">else</span> 
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<a name="l00122"></a>00122         {
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<a name="l00123"></a>00123         <span class="comment">// new device data entry</span>
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<a name="l00124"></a>00124         <a class="code" href="struct_t_device_data.html">TDeviceData</a> *devData = <span class="keyword">new</span> (ELeave) <a class="code" href="struct_t_device_data.html">TDeviceData</a>();
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<a name="l00125"></a>00125         devData-&gt;iDeviceName = iEntry().iName;
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<a name="l00126"></a>00126         devData-&gt;iDeviceAddr = 
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<a name="l00127"></a>00127             <span class="keyword">static_cast&lt;</span>TBTSockAddr<span class="keyword">&gt;</span>(iEntry().iAddr).BTAddr();
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<a name="l00128"></a>00128         devData-&gt;iDeviceServicePort = 0;
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<a name="l00129"></a>00129         <span class="comment">// add device data entry</span>
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<a name="l00130"></a>00130         iDevDataList-&gt;Append(devData);
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<a name="l00131"></a>00131         
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<a name="l00132"></a>00132         iObserver.<a class="code" href="class_m_device_disco_observer.html#ac2f21c5261b18e23581d9c59d8dd8493">DeviceDiscovered</a>(*devData);
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<a name="l00133"></a>00133 
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<a name="l00134"></a>00134         <span class="comment">// get next discovered device</span>
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<a name="l00135"></a>00135         iResolver.Next(iEntry, iStatus);
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<a name="l00136"></a>00136         <span class="comment">// wait for resolver to complete</span>
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<a name="l00137"></a>00137         SetActive();
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<a name="l00138"></a>00138         }
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<a name="l00139"></a>00139     }
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<a name="l00140"></a>00140 
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<a name="l00141"></a><a class="code" href="class_c_device_discoverer.html#a55bb42dd0eeea3054482d55cbfb61332">00141</a> <span class="keywordtype">void</span> <a class="code" href="class_c_device_discoverer.html#a55bb42dd0eeea3054482d55cbfb61332">CDeviceDiscoverer::DoCancel</a>()
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<a name="l00142"></a>00142     {
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<a name="l00143"></a>00143     iResolver.Cancel();
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<a name="l00144"></a>00144     }
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<a name="l00145"></a>00145 
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<a name="l00146"></a>00146 <span class="comment">// ----------------------------------------------------------------------------</span>
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<a name="l00147"></a>00147 <span class="comment">// CDeviceDiscoverer::HasDevices()</span>
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<a name="l00148"></a>00148 <span class="comment">//</span>
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<a name="l00149"></a>00149 <span class="comment">// returns true if any devices were discovered</span>
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<a name="l00150"></a>00150 <span class="comment">// ----------------------------------------------------------------------------</span>
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<a name="l00151"></a><a class="code" href="class_c_device_discoverer.html#a53754a551f4ba92b473cfaa08143d73c">00151</a> TBool <a class="code" href="class_c_device_discoverer.html#a53754a551f4ba92b473cfaa08143d73c">CDeviceDiscoverer::HasDevices</a>()
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<a name="l00152"></a>00152     {
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<a name="l00153"></a>00153     TBool exists = EFalse;
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<a name="l00154"></a>00154     
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<a name="l00155"></a>00155     <span class="keywordflow">if</span> (iDevDataList)
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<a name="l00156"></a>00156         {
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<a name="l00157"></a>00157         <span class="keywordflow">if</span> (iDevDataList-&gt;Count() &gt; 0)
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<a name="l00158"></a>00158             {
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<a name="l00159"></a>00159             exists = ETrue;
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<a name="l00160"></a>00160             }
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<a name="l00161"></a>00161         }
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<a name="l00162"></a>00162     <span class="keywordflow">return</span> exists;
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<a name="l00163"></a>00163     }
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<a name="l00164"></a>00164 
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<a name="l00165"></a>00165 <span class="comment">// ----------------------------------------------------------------------------</span>
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<a name="l00166"></a>00166 <span class="comment">// CBluetoothPMPExampleEngine::SetLIAC</span>
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<a name="l00167"></a>00167 <span class="comment">// ----------------------------------------------------------------------------</span>
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<a name="l00168"></a>00168 <span class="preprocessor">#ifdef ENABLE_LIAC</span>
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<a name="l00169"></a>00169 <span class="preprocessor"></span><span class="keywordtype">void</span> CDeviceDiscoverer::SetLIAC( TBool aState )
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<a name="l00170"></a>00170     {
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<a name="l00171"></a>00171     iLIAC = aState;
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<a name="l00172"></a>00172     }
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<a name="l00173"></a>00173 <span class="preprocessor">#endif</span>
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<a name="l00174"></a>00174 <span class="preprocessor"></span>
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<a name="l00175"></a>00175 <span class="comment">// ----------------------------------------------------------------------------</span>
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<a name="l00176"></a>00176 <span class="comment">// CBluetoothPMPExampleEngine::StopDiscovery</span>
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<a name="l00177"></a>00177 <span class="comment">// ----------------------------------------------------------------------------</span>
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<a name="l00178"></a><a class="code" href="class_c_device_discoverer.html#aba19673b682f694b38b5e58ddecaf2b6">00178</a> <span class="keywordtype">void</span> <a class="code" href="class_c_device_discoverer.html#aba19673b682f694b38b5e58ddecaf2b6">CDeviceDiscoverer::StopDiscovery</a>()
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<a name="l00179"></a>00179     {
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<a name="l00180"></a>00180     Cancel();
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<a name="l00181"></a>00181 
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<a name="l00182"></a>00182     <span class="keywordflow">if</span> (<a class="code" href="class_c_device_discoverer.html#a53754a551f4ba92b473cfaa08143d73c">HasDevices</a>())
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<a name="l00183"></a>00183         {
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<a name="l00184"></a>00184         iObserver.<a class="code" href="class_m_device_disco_observer.html#a0c81cc1105d340428c4ec9ab792b3d8c">HandleDeviceDiscoveryComplete</a>(KErrNone);
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<a name="l00185"></a>00185         }
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<a name="l00186"></a>00186     <span class="keywordflow">else</span>
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<a name="l00187"></a>00187         {
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<a name="l00188"></a>00188         iObserver.<a class="code" href="class_m_device_disco_observer.html#a0c81cc1105d340428c4ec9ab792b3d8c">HandleDeviceDiscoveryComplete</a>(KErrNotFound);
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<a name="l00189"></a>00189         }
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<a name="l00190"></a>00190     }
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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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