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

  <span class="comment">/****************************************************************************
  **
  ** Copyright (C) 2012 Denis Shienkov &lt;denis.shienkov@gmail.com&gt;
  ** Copyright (C) 2012 Laszlo Papp &lt;lpapp@kde.org&gt;
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the QtSerialPort 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;mainwindow.h&quot;</span>
  <span class="preprocessor">#include &quot;ui_mainwindow.h&quot;</span>
  <span class="preprocessor">#include &quot;console.h&quot;</span>
  <span class="preprocessor">#include &quot;settingsdialog.h&quot;</span>

  <span class="preprocessor">#include &lt;QMessageBox&gt;</span>
  <span class="preprocessor">#include &lt;QLabel&gt;</span>
  <span class="preprocessor">#include &lt;QtSerialPort/QSerialPort&gt;</span>

  MainWindow<span class="operator">::</span>MainWindow(<span class="type">QWidget</span> <span class="operator">*</span>parent) :
      <span class="type">QMainWindow</span>(parent)<span class="operator">,</span>
      ui(<span class="keyword">new</span> Ui<span class="operator">::</span>MainWindow)
  {
      ui<span class="operator">-</span><span class="operator">&gt;</span>setupUi(<span class="keyword">this</span>);
      console <span class="operator">=</span> <span class="keyword">new</span> Console;
      console<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">false</span>);
      setCentralWidget(console);
      serial <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qserialport.html">QSerialPort</a></span>(<span class="keyword">this</span>);
      settings <span class="operator">=</span> <span class="keyword">new</span> SettingsDialog;

      ui<span class="operator">-</span><span class="operator">&gt;</span>actionConnect<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>actionDisconnect<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>actionQuit<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>actionConfigure<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">true</span>);

      status <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QLabel</span>;
      ui<span class="operator">-</span><span class="operator">&gt;</span>statusBar<span class="operator">-</span><span class="operator">&gt;</span>addWidget(status);

      initActionsConnections();

      connect(serial<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator">&lt;</span><span class="type">void</span> (<span class="type"><a href="qserialport.html">QSerialPort</a></span><span class="operator">::</span><span class="operator">*</span>)(<span class="type"><a href="qserialport.html">QSerialPort</a></span><span class="operator">::</span>SerialPortError)<span class="operator">&gt;</span>(<span class="operator">&amp;</span><span class="type"><a href="qserialport.html">QSerialPort</a></span><span class="operator">::</span>error)<span class="operator">,</span>
              <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>MainWindow<span class="operator">::</span>handleError);

      connect(serial<span class="operator">,</span> <span class="operator">&amp;</span><span class="type"><a href="qserialport.html">QSerialPort</a></span><span class="operator">::</span>readyRead<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>MainWindow<span class="operator">::</span>readData);
      connect(console<span class="operator">,</span> <span class="operator">&amp;</span>Console<span class="operator">::</span>getData<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>MainWindow<span class="operator">::</span>writeData);
  }

  MainWindow<span class="operator">::</span><span class="operator">~</span>MainWindow()
  {
      <span class="keyword">delete</span> settings;
      <span class="keyword">delete</span> ui;
  }

  <span class="type">void</span> MainWindow<span class="operator">::</span>openSerialPort()
  {
      SettingsDialog<span class="operator">::</span>Settings p <span class="operator">=</span> settings<span class="operator">-</span><span class="operator">&gt;</span>settings();
      serial<span class="operator">-</span><span class="operator">&gt;</span>setPortName(p<span class="operator">.</span>name);
      serial<span class="operator">-</span><span class="operator">&gt;</span>setBaudRate(p<span class="operator">.</span>baudRate);
      serial<span class="operator">-</span><span class="operator">&gt;</span>setDataBits(p<span class="operator">.</span>dataBits);
      serial<span class="operator">-</span><span class="operator">&gt;</span>setParity(p<span class="operator">.</span>parity);
      serial<span class="operator">-</span><span class="operator">&gt;</span>setStopBits(p<span class="operator">.</span>stopBits);
      serial<span class="operator">-</span><span class="operator">&gt;</span>setFlowControl(p<span class="operator">.</span>flowControl);
      <span class="keyword">if</span> (serial<span class="operator">-</span><span class="operator">&gt;</span>open(<span class="type">QIODevice</span><span class="operator">::</span>ReadWrite)) {
          console<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">true</span>);
          console<span class="operator">-</span><span class="operator">&gt;</span>setLocalEchoEnabled(p<span class="operator">.</span>localEchoEnabled);
          ui<span class="operator">-</span><span class="operator">&gt;</span>actionConnect<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>actionDisconnect<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>actionConfigure<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">false</span>);
          showStatusMessage(tr(<span class="string">&quot;Connected to %1 : %2, %3, %4, %5, %6&quot;</span>)
                            <span class="operator">.</span>arg(p<span class="operator">.</span>name)<span class="operator">.</span>arg(p<span class="operator">.</span>stringBaudRate)<span class="operator">.</span>arg(p<span class="operator">.</span>stringDataBits)
                            <span class="operator">.</span>arg(p<span class="operator">.</span>stringParity)<span class="operator">.</span>arg(p<span class="operator">.</span>stringStopBits)<span class="operator">.</span>arg(p<span class="operator">.</span>stringFlowControl));
      } <span class="keyword">else</span> {
          <span class="type">QMessageBox</span><span class="operator">::</span>critical(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">&quot;Error&quot;</span>)<span class="operator">,</span> serial<span class="operator">-</span><span class="operator">&gt;</span>errorString());

          showStatusMessage(tr(<span class="string">&quot;Open error&quot;</span>));
      }
  }

  <span class="type">void</span> MainWindow<span class="operator">::</span>closeSerialPort()
  {
      <span class="keyword">if</span> (serial<span class="operator">-</span><span class="operator">&gt;</span>isOpen())
          serial<span class="operator">-</span><span class="operator">&gt;</span>close();
      console<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>actionConnect<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>actionDisconnect<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>actionConfigure<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">true</span>);
      showStatusMessage(tr(<span class="string">&quot;Disconnected&quot;</span>));
  }

  <span class="type">void</span> MainWindow<span class="operator">::</span>about()
  {
      <span class="type">QMessageBox</span><span class="operator">::</span>about(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">&quot;About Simple Terminal&quot;</span>)<span class="operator">,</span>
                         tr(<span class="string">&quot;The &lt;b&gt;Simple Terminal&lt;/b&gt; example demonstrates how to &quot;</span>
                            <span class="string">&quot;use the Qt Serial Port module in modern GUI applications &quot;</span>
                            <span class="string">&quot;using Qt, with a menu bar, toolbars, and a status bar.&quot;</span>));
  }

  <span class="type">void</span> MainWindow<span class="operator">::</span>writeData(<span class="keyword">const</span> <span class="type">QByteArray</span> <span class="operator">&amp;</span>data)
  {
      serial<span class="operator">-</span><span class="operator">&gt;</span>write(data);
  }

  <span class="type">void</span> MainWindow<span class="operator">::</span>readData()
  {
      <span class="type">QByteArray</span> data <span class="operator">=</span> serial<span class="operator">-</span><span class="operator">&gt;</span>readAll();
      console<span class="operator">-</span><span class="operator">&gt;</span>putData(data);
  }

  <span class="type">void</span> MainWindow<span class="operator">::</span>handleError(<span class="type"><a href="qserialport.html">QSerialPort</a></span><span class="operator">::</span>SerialPortError error)
  {
      <span class="keyword">if</span> (error <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qserialport.html">QSerialPort</a></span><span class="operator">::</span>ResourceError) {
          <span class="type">QMessageBox</span><span class="operator">::</span>critical(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">&quot;Critical Error&quot;</span>)<span class="operator">,</span> serial<span class="operator">-</span><span class="operator">&gt;</span>errorString());
          closeSerialPort();
      }
  }

  <span class="type">void</span> MainWindow<span class="operator">::</span>initActionsConnections()
  {
      connect(ui<span class="operator">-</span><span class="operator">&gt;</span>actionConnect<span class="operator">,</span> <span class="operator">&amp;</span><span class="type">QAction</span><span class="operator">::</span>triggered<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>MainWindow<span class="operator">::</span>openSerialPort);
      connect(ui<span class="operator">-</span><span class="operator">&gt;</span>actionDisconnect<span class="operator">,</span> <span class="operator">&amp;</span><span class="type">QAction</span><span class="operator">::</span>triggered<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>MainWindow<span class="operator">::</span>closeSerialPort);
      connect(ui<span class="operator">-</span><span class="operator">&gt;</span>actionQuit<span class="operator">,</span> <span class="operator">&amp;</span><span class="type">QAction</span><span class="operator">::</span>triggered<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>MainWindow<span class="operator">::</span>close);
      connect(ui<span class="operator">-</span><span class="operator">&gt;</span>actionConfigure<span class="operator">,</span> <span class="operator">&amp;</span><span class="type">QAction</span><span class="operator">::</span>triggered<span class="operator">,</span> settings<span class="operator">,</span> <span class="operator">&amp;</span>SettingsDialog<span class="operator">::</span>show);
      connect(ui<span class="operator">-</span><span class="operator">&gt;</span>actionClear<span class="operator">,</span> <span class="operator">&amp;</span><span class="type">QAction</span><span class="operator">::</span>triggered<span class="operator">,</span> console<span class="operator">,</span> <span class="operator">&amp;</span>Console<span class="operator">::</span>clear);
      connect(ui<span class="operator">-</span><span class="operator">&gt;</span>actionAbout<span class="operator">,</span> <span class="operator">&amp;</span><span class="type">QAction</span><span class="operator">::</span>triggered<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>MainWindow<span class="operator">::</span>about);
      connect(ui<span class="operator">-</span><span class="operator">&gt;</span>actionAboutQt<span class="operator">,</span> <span class="operator">&amp;</span><span class="type">QAction</span><span class="operator">::</span>triggered<span class="operator">,</span> qApp<span class="operator">,</span> <span class="operator">&amp;</span><span class="type">QApplication</span><span class="operator">::</span>aboutQt);
  }

  <span class="type">void</span> MainWindow<span class="operator">::</span>showStatusMessage(<span class="keyword">const</span> <span class="type">QString</span> <span class="operator">&amp;</span>message)
  {
      status<span class="operator">-</span><span class="operator">&gt;</span>setText(message);
  }

</pre>
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<!-- @@@terminal/mainwindow.cpp -->
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