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<h1 class="title">device.cpp Example File</h1>
<span class="subtitle">btscanner/device.cpp</span>
<!-- $$$btscanner/device.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp">

  <span class="comment">/****************************************************************************
  **
  ** Copyright (C) 2017 The Qt Company Ltd.
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the QtBluetooth module of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:BSD$
  ** Commercial License Usage
  ** Licensees holding valid commercial Qt licenses may use this file in
  ** accordance with the commercial license agreement provided with the
  ** Software or, alternatively, in accordance with the terms contained in
  ** a written agreement between you and The Qt Company. For licensing terms
  ** and conditions see https://www.qt.io/terms-conditions. For further
  ** information use the contact form at https://www.qt.io/contact-us.
  **
  ** BSD License Usage
  ** Alternatively, you may use this file under the terms of the BSD license
  ** as follows:
  **
  ** &quot;Redistribution and use in source and binary forms, with or without
  ** modification, are permitted provided that the following conditions are
  ** met:
  **   * Redistributions of source code must retain the above copyright
  **     notice, this list of conditions and the following disclaimer.
  **   * Redistributions in binary form must reproduce the above copyright
  **     notice, this list of conditions and the following disclaimer in
  **     the documentation and/or other materials provided with the
  **     distribution.
  **   * Neither the name of The Qt Company Ltd nor the names of its
  **     contributors may be used to endorse or promote products derived
  **     from this software without specific prior written permission.
  **
  **
  ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  ** &quot;AS IS&quot; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.&quot;
  **
  ** $QT_END_LICENSE$
  **
  ****************************************************************************/</span>

  <span class="preprocessor">#include &quot;device.h&quot;</span>
  <span class="preprocessor">#include &quot;service.h&quot;</span>

  <span class="preprocessor">#include &lt;qbluetoothaddress.h&gt;</span>
  <span class="preprocessor">#include &lt;qbluetoothdevicediscoveryagent.h&gt;</span>
  <span class="preprocessor">#include &lt;qbluetoothlocaldevice.h&gt;</span>
  <span class="preprocessor">#include &lt;QMenu&gt;</span>
  <span class="preprocessor">#include &lt;QDebug&gt;</span>

  DeviceDiscoveryDialog<span class="operator">::</span>DeviceDiscoveryDialog(<span class="type">QWidget</span> <span class="operator">*</span>parent)
  :   <span class="type">QDialog</span>(parent)<span class="operator">,</span> localDevice(<span class="keyword">new</span> <span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span>)<span class="operator">,</span>
      ui(<span class="keyword">new</span> Ui_DeviceDiscovery)
  {
      ui<span class="operator">-</span><span class="operator">&gt;</span>setupUi(<span class="keyword">this</span>);

      <span class="comment">/*
       * In case of multiple Bluetooth adapters it is possible to set adapter
       * which will be used. Example code:
       *
       * QBluetoothAddress address(&quot;XX:XX:XX:XX:XX:XX&quot;);
       * discoveryAgent = new QBluetoothDeviceDiscoveryAgent(address);
       *
       **/</span>

      discoveryAgent <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qbluetoothdevicediscoveryagent.html">QBluetoothDeviceDiscoveryAgent</a></span>();

      connect(ui<span class="operator">-</span><span class="operator">&gt;</span>inquiryType<span class="operator">,</span> SIGNAL(toggled(bool))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(setGeneralUnlimited(bool)));
      connect(ui<span class="operator">-</span><span class="operator">&gt;</span>scan<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(startScan()));

      connect(discoveryAgent<span class="operator">,</span> SIGNAL(deviceDiscovered(<span class="type"><a href="qbluetoothdeviceinfo.html">QBluetoothDeviceInfo</a></span>))<span class="operator">,</span>
              <span class="keyword">this</span><span class="operator">,</span> SLOT(addDevice(<span class="type"><a href="qbluetoothdeviceinfo.html">QBluetoothDeviceInfo</a></span>)));
      connect(discoveryAgent<span class="operator">,</span> SIGNAL(finished())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(scanFinished()));

      connect(ui<span class="operator">-</span><span class="operator">&gt;</span>list<span class="operator">,</span> SIGNAL(itemActivated(<span class="type">QListWidgetItem</span><span class="operator">*</span>))<span class="operator">,</span>
              <span class="keyword">this</span><span class="operator">,</span> SLOT(itemActivated(<span class="type">QListWidgetItem</span><span class="operator">*</span>)));

      connect(localDevice<span class="operator">,</span> SIGNAL(hostModeStateChanged(<span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span><span class="operator">::</span>HostMode))<span class="operator">,</span>
              <span class="keyword">this</span><span class="operator">,</span> SLOT(hostModeStateChanged(<span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span><span class="operator">::</span>HostMode)));

      hostModeStateChanged(localDevice<span class="operator">-</span><span class="operator">&gt;</span>hostMode());
      <span class="comment">// add context menu for devices to be able to pair device</span>
      ui<span class="operator">-</span><span class="operator">&gt;</span>list<span class="operator">-</span><span class="operator">&gt;</span>setContextMenuPolicy(<span class="type">Qt</span><span class="operator">::</span>CustomContextMenu);
      connect(ui<span class="operator">-</span><span class="operator">&gt;</span>list<span class="operator">,</span> SIGNAL(customContextMenuRequested(<span class="type">QPoint</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(displayPairingMenu(<span class="type">QPoint</span>)));
      connect(localDevice<span class="operator">,</span> SIGNAL(pairingFinished(<span class="type"><a href="qbluetoothaddress.html">QBluetoothAddress</a></span><span class="operator">,</span><span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span><span class="operator">::</span>Pairing))
          <span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(pairingDone(<span class="type"><a href="qbluetoothaddress.html">QBluetoothAddress</a></span><span class="operator">,</span><span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span><span class="operator">::</span>Pairing)));

  }

  DeviceDiscoveryDialog<span class="operator">::</span><span class="operator">~</span>DeviceDiscoveryDialog()
  {
      <span class="keyword">delete</span> discoveryAgent;
  }

  <span class="type">void</span> DeviceDiscoveryDialog<span class="operator">::</span>addDevice(<span class="keyword">const</span> <span class="type"><a href="qbluetoothdeviceinfo.html">QBluetoothDeviceInfo</a></span> <span class="operator">&amp;</span>info)
  {
      <span class="type">QString</span> label <span class="operator">=</span> <span class="type">QString</span>(<span class="string">&quot;%1 %2&quot;</span>)<span class="operator">.</span>arg(info<span class="operator">.</span>address()<span class="operator">.</span>toString())<span class="operator">.</span>arg(info<span class="operator">.</span>name());
      <span class="type">QList</span><span class="operator">&lt;</span><span class="type">QListWidgetItem</span> <span class="operator">*</span><span class="operator">&gt;</span> items <span class="operator">=</span> ui<span class="operator">-</span><span class="operator">&gt;</span>list<span class="operator">-</span><span class="operator">&gt;</span>findItems(label<span class="operator">,</span> <span class="type">Qt</span><span class="operator">::</span>MatchExactly);
      <span class="keyword">if</span> (items<span class="operator">.</span>empty()) {
          <span class="type">QListWidgetItem</span> <span class="operator">*</span>item <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QListWidgetItem</span>(label);
          <span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span><span class="operator">::</span>Pairing pairingStatus <span class="operator">=</span> localDevice<span class="operator">-</span><span class="operator">&gt;</span>pairingStatus(info<span class="operator">.</span>address());
          <span class="keyword">if</span> (pairingStatus <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span><span class="operator">::</span>Paired <span class="operator">|</span><span class="operator">|</span> pairingStatus <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span><span class="operator">::</span>AuthorizedPaired )
              item<span class="operator">-</span><span class="operator">&gt;</span>setTextColor(<span class="type">QColor</span>(<span class="type">Qt</span><span class="operator">::</span>green));
          <span class="keyword">else</span>
              item<span class="operator">-</span><span class="operator">&gt;</span>setTextColor(<span class="type">QColor</span>(<span class="type">Qt</span><span class="operator">::</span>black));

          ui<span class="operator">-</span><span class="operator">&gt;</span>list<span class="operator">-</span><span class="operator">&gt;</span>addItem(item);
      }

  }

  <span class="type">void</span> DeviceDiscoveryDialog<span class="operator">::</span>startScan()
  {
      discoveryAgent<span class="operator">-</span><span class="operator">&gt;</span>start();
      ui<span class="operator">-</span><span class="operator">&gt;</span>scan<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">false</span>);
      ui<span class="operator">-</span><span class="operator">&gt;</span>inquiryType<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">false</span>);
  }

  <span class="type">void</span> DeviceDiscoveryDialog<span class="operator">::</span>scanFinished()
  {
      ui<span class="operator">-</span><span class="operator">&gt;</span>scan<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">true</span>);
      ui<span class="operator">-</span><span class="operator">&gt;</span>inquiryType<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">true</span>);
  }

  <span class="type">void</span> DeviceDiscoveryDialog<span class="operator">::</span>setGeneralUnlimited(bool unlimited)
  {
      <span class="keyword">if</span> (unlimited)
          discoveryAgent<span class="operator">-</span><span class="operator">&gt;</span>setInquiryType(<span class="type"><a href="qbluetoothdevicediscoveryagent.html">QBluetoothDeviceDiscoveryAgent</a></span><span class="operator">::</span>GeneralUnlimitedInquiry);
      <span class="keyword">else</span>
          discoveryAgent<span class="operator">-</span><span class="operator">&gt;</span>setInquiryType(<span class="type"><a href="qbluetoothdevicediscoveryagent.html">QBluetoothDeviceDiscoveryAgent</a></span><span class="operator">::</span>LimitedInquiry);
  }

  <span class="type">void</span> DeviceDiscoveryDialog<span class="operator">::</span>itemActivated(<span class="type">QListWidgetItem</span> <span class="operator">*</span>item)
  {
      <span class="type">QString</span> text <span class="operator">=</span> item<span class="operator">-</span><span class="operator">&gt;</span>text();

      <span class="type">int</span> index <span class="operator">=</span> text<span class="operator">.</span>indexOf(<span class="char">' '</span>);

      <span class="keyword">if</span> (index <span class="operator">=</span><span class="operator">=</span> <span class="operator">-</span><span class="number">1</span>)
          <span class="keyword">return</span>;

      <span class="type"><a href="qbluetoothaddress.html">QBluetoothAddress</a></span> address(text<span class="operator">.</span>left(index));
      <span class="type">QString</span> name(text<span class="operator">.</span>mid(index <span class="operator">+</span> <span class="number">1</span>));

      ServiceDiscoveryDialog d(name<span class="operator">,</span> address);
      d<span class="operator">.</span>exec();
  }

  <span class="type">void</span> DeviceDiscoveryDialog<span class="operator">::</span>on_discoverable_clicked(bool clicked)
  {
      <span class="keyword">if</span> (clicked)
          localDevice<span class="operator">-</span><span class="operator">&gt;</span>setHostMode(<span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span><span class="operator">::</span>HostDiscoverable);
      <span class="keyword">else</span>
          localDevice<span class="operator">-</span><span class="operator">&gt;</span>setHostMode(<span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span><span class="operator">::</span>HostConnectable);
  }

  <span class="type">void</span> DeviceDiscoveryDialog<span class="operator">::</span>on_power_clicked(bool clicked)
  {
      <span class="keyword">if</span> (clicked)
          localDevice<span class="operator">-</span><span class="operator">&gt;</span>powerOn();
      <span class="keyword">else</span>
          localDevice<span class="operator">-</span><span class="operator">&gt;</span>setHostMode(<span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span><span class="operator">::</span>HostPoweredOff);
  }

  <span class="type">void</span> DeviceDiscoveryDialog<span class="operator">::</span>hostModeStateChanged(<span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span><span class="operator">::</span>HostMode mode)
  {
      <span class="keyword">if</span> (mode <span class="operator">!</span><span class="operator">=</span> <span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span><span class="operator">::</span>HostPoweredOff)
          ui<span class="operator">-</span><span class="operator">&gt;</span>power<span class="operator">-</span><span class="operator">&gt;</span>setChecked(<span class="keyword">true</span>);
      <span class="keyword">else</span>
         ui<span class="operator">-</span><span class="operator">&gt;</span>power<span class="operator">-</span><span class="operator">&gt;</span>setChecked( <span class="keyword">false</span>);

      <span class="keyword">if</span> (mode <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span><span class="operator">::</span>HostDiscoverable)
          ui<span class="operator">-</span><span class="operator">&gt;</span>discoverable<span class="operator">-</span><span class="operator">&gt;</span>setChecked(<span class="keyword">true</span>);
      <span class="keyword">else</span>
          ui<span class="operator">-</span><span class="operator">&gt;</span>discoverable<span class="operator">-</span><span class="operator">&gt;</span>setChecked(<span class="keyword">false</span>);

      bool on <span class="operator">=</span> <span class="operator">!</span>(mode <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span><span class="operator">::</span>HostPoweredOff);

      ui<span class="operator">-</span><span class="operator">&gt;</span>scan<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(on);
      ui<span class="operator">-</span><span class="operator">&gt;</span>discoverable<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(on);
  }
  <span class="type">void</span> DeviceDiscoveryDialog<span class="operator">::</span>displayPairingMenu(<span class="keyword">const</span> <span class="type">QPoint</span> <span class="operator">&amp;</span>pos)
  {
      <span class="keyword">if</span> (ui<span class="operator">-</span><span class="operator">&gt;</span>list<span class="operator">-</span><span class="operator">&gt;</span>count() <span class="operator">=</span><span class="operator">=</span> <span class="number">0</span>)
          <span class="keyword">return</span>;
      <span class="type">QMenu</span> menu(<span class="keyword">this</span>);
      <span class="type">QAction</span> <span class="operator">*</span>pairAction <span class="operator">=</span> menu<span class="operator">.</span>addAction(<span class="string">&quot;Pair&quot;</span>);
      <span class="type">QAction</span> <span class="operator">*</span>removePairAction <span class="operator">=</span> menu<span class="operator">.</span>addAction(<span class="string">&quot;Remove Pairing&quot;</span>);
      <span class="type">QAction</span> <span class="operator">*</span>chosenAction <span class="operator">=</span> menu<span class="operator">.</span>exec(ui<span class="operator">-</span><span class="operator">&gt;</span>list<span class="operator">-</span><span class="operator">&gt;</span>viewport()<span class="operator">-</span><span class="operator">&gt;</span>mapToGlobal(pos));
      <span class="type">QListWidgetItem</span> <span class="operator">*</span>currentItem <span class="operator">=</span> ui<span class="operator">-</span><span class="operator">&gt;</span>list<span class="operator">-</span><span class="operator">&gt;</span>currentItem();

      <span class="type">QString</span> text <span class="operator">=</span> currentItem<span class="operator">-</span><span class="operator">&gt;</span>text();
      <span class="type">int</span> index <span class="operator">=</span> text<span class="operator">.</span>indexOf(<span class="char">' '</span>);
      <span class="keyword">if</span> (index <span class="operator">=</span><span class="operator">=</span> <span class="operator">-</span><span class="number">1</span>)
          <span class="keyword">return</span>;

      <span class="type"><a href="qbluetoothaddress.html">QBluetoothAddress</a></span> address (text<span class="operator">.</span>left(index));
      <span class="keyword">if</span> (chosenAction <span class="operator">=</span><span class="operator">=</span> pairAction) {
          localDevice<span class="operator">-</span><span class="operator">&gt;</span>requestPairing(address<span class="operator">,</span> <span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span><span class="operator">::</span>Paired);
      } <span class="keyword">else</span> <span class="keyword">if</span> (chosenAction <span class="operator">=</span><span class="operator">=</span> removePairAction) {
          localDevice<span class="operator">-</span><span class="operator">&gt;</span>requestPairing(address<span class="operator">,</span> <span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span><span class="operator">::</span>Unpaired);
      }
  }
  <span class="type">void</span> DeviceDiscoveryDialog<span class="operator">::</span>pairingDone(<span class="keyword">const</span> <span class="type"><a href="qbluetoothaddress.html">QBluetoothAddress</a></span> <span class="operator">&amp;</span>address<span class="operator">,</span> <span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span><span class="operator">::</span>Pairing pairing)
  {
      <span class="type">QList</span><span class="operator">&lt;</span><span class="type">QListWidgetItem</span> <span class="operator">*</span><span class="operator">&gt;</span> items <span class="operator">=</span> ui<span class="operator">-</span><span class="operator">&gt;</span>list<span class="operator">-</span><span class="operator">&gt;</span>findItems(address<span class="operator">.</span>toString()<span class="operator">,</span> <span class="type">Qt</span><span class="operator">::</span>MatchContains);

      <span class="keyword">if</span> (pairing <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span><span class="operator">::</span>Paired <span class="operator">|</span><span class="operator">|</span> pairing <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span><span class="operator">::</span>AuthorizedPaired ) {
          <span class="keyword">for</span> (<span class="type">int</span> var <span class="operator">=</span> <span class="number">0</span>; var <span class="operator">&lt;</span> items<span class="operator">.</span>count(); <span class="operator">+</span><span class="operator">+</span>var) {
              <span class="type">QListWidgetItem</span> <span class="operator">*</span>item <span class="operator">=</span> items<span class="operator">.</span>at(var);
              item<span class="operator">-</span><span class="operator">&gt;</span>setTextColor(<span class="type">QColor</span>(<span class="type">Qt</span><span class="operator">::</span>green));
          }
      } <span class="keyword">else</span> {
          <span class="keyword">for</span> (<span class="type">int</span> var <span class="operator">=</span> <span class="number">0</span>; var <span class="operator">&lt;</span> items<span class="operator">.</span>count(); <span class="operator">+</span><span class="operator">+</span>var) {
              <span class="type">QListWidgetItem</span> <span class="operator">*</span>item <span class="operator">=</span> items<span class="operator">.</span>at(var);
              item<span class="operator">-</span><span class="operator">&gt;</span>setTextColor(<span class="type">QColor</span>(<span class="type">Qt</span><span class="operator">::</span>red));
          }
      }
  }

</pre>
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<!-- @@@btscanner/device.cpp -->
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