<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>device.cpp Example File | Qt Bluetooth 5.12.6</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.12</td><td ><a href="qtbluetooth-index.html">Qt Bluetooth</a></td><td ><a href="qtbluetooth-btscanner-example.html">Bluetooth Scanner Example</a></td><td >device.cpp Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtbluetooth-index.html">Qt 5.12.6 Reference Documentation</a></td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <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: ** ** "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 ** "AS IS" 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." ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> <span class="preprocessor">#include "device.h"</span> <span class="preprocessor">#include "service.h"</span> <span class="preprocessor">#include <qbluetoothaddress.h></span> <span class="preprocessor">#include <qbluetoothdevicediscoveryagent.h></span> <span class="preprocessor">#include <qbluetoothlocaldevice.h></span> <span class="preprocessor">#include <QMenu></span> <span class="preprocessor">#include <QDebug></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">></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("XX:XX:XX:XX:XX:XX"); * 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">></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">></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">></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">></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">></span>list<span class="operator">-</span><span class="operator">></span>setContextMenuPolicy(<span class="type">Qt</span><span class="operator">::</span>CustomContextMenu); connect(ui<span class="operator">-</span><span class="operator">></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">&</span>info) { <span class="type">QString</span> label <span class="operator">=</span> <span class="type">QString</span>(<span class="string">"%1 %2"</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"><</span><span class="type">QListWidgetItem</span> <span class="operator">*</span><span class="operator">></span> items <span class="operator">=</span> ui<span class="operator">-</span><span class="operator">></span>list<span class="operator">-</span><span class="operator">></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">></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">></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">></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">></span>list<span class="operator">-</span><span class="operator">></span>addItem(item); } } <span class="type">void</span> DeviceDiscoveryDialog<span class="operator">::</span>startScan() { discoveryAgent<span class="operator">-</span><span class="operator">></span>start(); ui<span class="operator">-</span><span class="operator">></span>scan<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>); ui<span class="operator">-</span><span class="operator">></span>inquiryType<span class="operator">-</span><span class="operator">></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">></span>scan<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">true</span>); ui<span class="operator">-</span><span class="operator">></span>inquiryType<span class="operator">-</span><span class="operator">></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">></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">></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">></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">></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">></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">></span>powerOn(); <span class="keyword">else</span> localDevice<span class="operator">-</span><span class="operator">></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">></span>power<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>); <span class="keyword">else</span> ui<span class="operator">-</span><span class="operator">></span>power<span class="operator">-</span><span class="operator">></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">></span>discoverable<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>); <span class="keyword">else</span> ui<span class="operator">-</span><span class="operator">></span>discoverable<span class="operator">-</span><span class="operator">></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">></span>scan<span class="operator">-</span><span class="operator">></span>setEnabled(on); ui<span class="operator">-</span><span class="operator">></span>discoverable<span class="operator">-</span><span class="operator">></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">&</span>pos) { <span class="keyword">if</span> (ui<span class="operator">-</span><span class="operator">></span>list<span class="operator">-</span><span class="operator">></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">"Pair"</span>); <span class="type">QAction</span> <span class="operator">*</span>removePairAction <span class="operator">=</span> menu<span class="operator">.</span>addAction(<span class="string">"Remove Pairing"</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">></span>list<span class="operator">-</span><span class="operator">></span>viewport()<span class="operator">-</span><span class="operator">></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">></span>list<span class="operator">-</span><span class="operator">></span>currentItem(); <span class="type">QString</span> text <span class="operator">=</span> currentItem<span class="operator">-</span><span class="operator">></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">></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">></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">&</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"><</span><span class="type">QListWidgetItem</span> <span class="operator">*</span><span class="operator">></span> items <span class="operator">=</span> ui<span class="operator">-</span><span class="operator">></span>list<span class="operator">-</span><span class="operator">></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"><</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">></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"><</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">></span>setTextColor(<span class="type">QColor</span>(<span class="type">Qt</span><span class="operator">::</span>red)); } } } </pre> </div> <!-- @@@btscanner/device.cpp --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br/> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br/> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>