Sophie: qtbase5-doc-5.12.6-2.mga7 noarch

qtbase5-doc-5.12.6-2.mga7.noarch.rpm

<?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>mainwindow.cpp Example File | Qt XML 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="qtxml-index.html">Qt XML</a></td><td ><a href="qtxml-streambookmarks-example.html">QXmlStream Bookmarks Example</a></td><td >mainwindow.cpp Example File</td></tr></table><table class="buildversion"><tr>
<td id="buildversion" width="100%" align="right"><a href="qtxml-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">mainwindow.cpp Example File</h1>
<span class="subtitle">streambookmarks/mainwindow.cpp</span>
<!-- $$$streambookmarks/mainwindow.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp">

  <span class="comment">/****************************************************************************
  **
  ** Copyright (C) 2016 The Qt Company Ltd.
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the examples 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 &lt;QtWidgets&gt;</span>

  <span class="preprocessor">#include &quot;mainwindow.h&quot;</span>
  <span class="preprocessor">#include &quot;xbelreader.h&quot;</span>
  <span class="preprocessor">#include &quot;xbelwriter.h&quot;</span>

  MainWindow<span class="operator">::</span>MainWindow()
  {
      <span class="type"><a href="../qtcore/qstringlist.html">QStringList</a></span> labels;
      labels <span class="operator">&lt;</span><span class="operator">&lt;</span> tr(<span class="string">&quot;Title&quot;</span>) <span class="operator">&lt;</span><span class="operator">&lt;</span> tr(<span class="string">&quot;Location&quot;</span>);

      treeWidget <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtwidgets/qtreewidget.html">QTreeWidget</a></span>;
      treeWidget<span class="operator">-</span><span class="operator">&gt;</span>header()<span class="operator">-</span><span class="operator">&gt;</span>setSectionResizeMode(<span class="type"><a href="../qtwidgets/qheaderview.html">QHeaderView</a></span><span class="operator">::</span>Stretch);
      treeWidget<span class="operator">-</span><span class="operator">&gt;</span>setHeaderLabels(labels);
  <span class="preprocessor">#if !defined(QT_NO_CONTEXTMENU) &amp;&amp; !defined(QT_NO_CLIPBOARD)</span>
      treeWidget<span class="operator">-</span><span class="operator">&gt;</span>setContextMenuPolicy(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>CustomContextMenu);
      connect(treeWidget<span class="operator">,</span> <span class="operator">&amp;</span><span class="type"><a href="../qtwidgets/qwidget.html">QWidget</a></span><span class="operator">::</span>customContextMenuRequested<span class="operator">,</span>
              <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>MainWindow<span class="operator">::</span>onCustomContextMenuRequested);
  <span class="preprocessor">#endif</span>
      setCentralWidget(treeWidget);

      createMenus();

      statusBar()<span class="operator">-</span><span class="operator">&gt;</span>showMessage(tr(<span class="string">&quot;Ready&quot;</span>));

      setWindowTitle(tr(<span class="string">&quot;QXmlStream Bookmarks&quot;</span>));
      <span class="keyword">const</span> <span class="type"><a href="../qtcore/qsize.html">QSize</a></span> availableSize <span class="operator">=</span> <span class="type"><a href="../qtwidgets/qapplication.html">QApplication</a></span><span class="operator">::</span>desktop()<span class="operator">-</span><span class="operator">&gt;</span>availableGeometry(<span class="keyword">this</span>)<span class="operator">.</span>size();
      resize(availableSize<span class="operator">.</span>width() <span class="operator">/</span> <span class="number">2</span><span class="operator">,</span> availableSize<span class="operator">.</span>height() <span class="operator">/</span> <span class="number">3</span>);
  }

  <span class="preprocessor">#if !defined(QT_NO_CONTEXTMENU) &amp;&amp; !defined(QT_NO_CLIPBOARD)</span>
  <span class="type">void</span> MainWindow<span class="operator">::</span>onCustomContextMenuRequested(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qpoint.html">QPoint</a></span> <span class="operator">&amp;</span>pos)
  {
      <span class="keyword">const</span> <span class="type"><a href="../qtwidgets/qtreewidgetitem.html">QTreeWidgetItem</a></span> <span class="operator">*</span>item <span class="operator">=</span> treeWidget<span class="operator">-</span><span class="operator">&gt;</span>itemAt(pos);
      <span class="keyword">if</span> (<span class="operator">!</span>item)
          <span class="keyword">return</span>;
      <span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> url <span class="operator">=</span> item<span class="operator">-</span><span class="operator">&gt;</span>text(<span class="number">1</span>);
      <span class="type"><a href="../qtwidgets/qmenu.html">QMenu</a></span> contextMenu;
      <span class="type"><a href="../qtwidgets/qaction.html">QAction</a></span> <span class="operator">*</span>copyAction <span class="operator">=</span> contextMenu<span class="operator">.</span>addAction(tr(<span class="string">&quot;Copy Link to Clipboard&quot;</span>));
      <span class="type"><a href="../qtwidgets/qaction.html">QAction</a></span> <span class="operator">*</span>openAction <span class="operator">=</span> contextMenu<span class="operator">.</span>addAction(tr(<span class="string">&quot;Open&quot;</span>));
      <span class="type"><a href="../qtwidgets/qaction.html">QAction</a></span> <span class="operator">*</span>action <span class="operator">=</span> contextMenu<span class="operator">.</span>exec(treeWidget<span class="operator">-</span><span class="operator">&gt;</span>viewport()<span class="operator">-</span><span class="operator">&gt;</span>mapToGlobal(pos));
      <span class="keyword">if</span> (action <span class="operator">=</span><span class="operator">=</span> copyAction)
          <span class="type">QGuiApplication</span><span class="operator">::</span>clipboard()<span class="operator">-</span><span class="operator">&gt;</span>setText(url);
      <span class="keyword">else</span> <span class="keyword">if</span> (action <span class="operator">=</span><span class="operator">=</span> openAction)
          <span class="type">QDesktopServices</span><span class="operator">::</span>openUrl(<span class="type"><a href="../qtcore/qurl.html">QUrl</a></span>(url));
  }
  <span class="preprocessor">#endif // !QT_NO_CONTEXTMENU &amp;&amp; !QT_NO_CLIPBOARD</span>

  <span class="type">void</span> MainWindow<span class="operator">::</span>open()
  {
      <span class="type"><a href="../qtcore/qstring.html">QString</a></span> fileName <span class="operator">=</span>
              <span class="type"><a href="../qtwidgets/qfiledialog.html">QFileDialog</a></span><span class="operator">::</span>getOpenFileName(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">&quot;Open Bookmark File&quot;</span>)<span class="operator">,</span>
                                           <span class="type"><a href="../qtcore/qdir.html">QDir</a></span><span class="operator">::</span>currentPath()<span class="operator">,</span>
                                           tr(<span class="string">&quot;XBEL Files (*.xbel *.xml)&quot;</span>));
      <span class="keyword">if</span> (fileName<span class="operator">.</span>isEmpty())
          <span class="keyword">return</span>;

      treeWidget<span class="operator">-</span><span class="operator">&gt;</span>clear();

      <span class="type"><a href="../qtcore/qfile.html">QFile</a></span> file(fileName);
      <span class="keyword">if</span> (<span class="operator">!</span>file<span class="operator">.</span>open(<span class="type"><a href="../qtcore/qfile.html">QFile</a></span><span class="operator">::</span>ReadOnly <span class="operator">|</span> <span class="type"><a href="../qtcore/qfile.html">QFile</a></span><span class="operator">::</span>Text)) {
          <span class="type"><a href="../qtwidgets/qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>warning(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">&quot;QXmlStream Bookmarks&quot;</span>)<span class="operator">,</span>
                               tr(<span class="string">&quot;Cannot read file %1:\n%2.&quot;</span>)
                               <span class="operator">.</span>arg(<span class="type"><a href="../qtcore/qdir.html">QDir</a></span><span class="operator">::</span>toNativeSeparators(fileName)<span class="operator">,</span>
                                    file<span class="operator">.</span>errorString()));
          <span class="keyword">return</span>;
      }

      XbelReader reader(treeWidget);
      <span class="keyword">if</span> (<span class="operator">!</span>reader<span class="operator">.</span>read(<span class="operator">&amp;</span>file)) {
          <span class="type"><a href="../qtwidgets/qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>warning(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">&quot;QXmlStream Bookmarks&quot;</span>)<span class="operator">,</span>
                               tr(<span class="string">&quot;Parse error in file %1:\n\n%2&quot;</span>)
                               <span class="operator">.</span>arg(<span class="type"><a href="../qtcore/qdir.html">QDir</a></span><span class="operator">::</span>toNativeSeparators(fileName)<span class="operator">,</span>
                                    reader<span class="operator">.</span>errorString()));
      } <span class="keyword">else</span> {
          statusBar()<span class="operator">-</span><span class="operator">&gt;</span>showMessage(tr(<span class="string">&quot;File loaded&quot;</span>)<span class="operator">,</span> <span class="number">2000</span>);
      }

  }

  <span class="type">void</span> MainWindow<span class="operator">::</span>saveAs()
  {
      <span class="type"><a href="../qtcore/qstring.html">QString</a></span> fileName <span class="operator">=</span>
              <span class="type"><a href="../qtwidgets/qfiledialog.html">QFileDialog</a></span><span class="operator">::</span>getSaveFileName(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">&quot;Save Bookmark File&quot;</span>)<span class="operator">,</span>
                                           <span class="type"><a href="../qtcore/qdir.html">QDir</a></span><span class="operator">::</span>currentPath()<span class="operator">,</span>
                                           tr(<span class="string">&quot;XBEL Files (*.xbel *.xml)&quot;</span>));
      <span class="keyword">if</span> (fileName<span class="operator">.</span>isEmpty())
          <span class="keyword">return</span>;

      <span class="type"><a href="../qtcore/qfile.html">QFile</a></span> file(fileName);
      <span class="keyword">if</span> (<span class="operator">!</span>file<span class="operator">.</span>open(<span class="type"><a href="../qtcore/qfile.html">QFile</a></span><span class="operator">::</span>WriteOnly <span class="operator">|</span> <span class="type"><a href="../qtcore/qfile.html">QFile</a></span><span class="operator">::</span>Text)) {
          <span class="type"><a href="../qtwidgets/qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>warning(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">&quot;QXmlStream Bookmarks&quot;</span>)<span class="operator">,</span>
                               tr(<span class="string">&quot;Cannot write file %1:\n%2.&quot;</span>)
                               <span class="operator">.</span>arg(<span class="type"><a href="../qtcore/qdir.html">QDir</a></span><span class="operator">::</span>toNativeSeparators(fileName)<span class="operator">,</span>
                                    file<span class="operator">.</span>errorString()));
          <span class="keyword">return</span>;
      }

      XbelWriter writer(treeWidget);
      <span class="keyword">if</span> (writer<span class="operator">.</span>writeFile(<span class="operator">&amp;</span>file))
          statusBar()<span class="operator">-</span><span class="operator">&gt;</span>showMessage(tr(<span class="string">&quot;File saved&quot;</span>)<span class="operator">,</span> <span class="number">2000</span>);
  }

  <span class="type">void</span> MainWindow<span class="operator">::</span>about()
  {
     <span class="type"><a href="../qtwidgets/qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>about(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">&quot;About QXmlStream Bookmarks&quot;</span>)<span class="operator">,</span>
              tr(<span class="string">&quot;The &lt;b&gt;QXmlStream Bookmarks&lt;/b&gt; example demonstrates how to use Qt's &quot;</span>
                 <span class="string">&quot;QXmlStream classes to read and write XML documents.&quot;</span>));
  }

  <span class="type">void</span> MainWindow<span class="operator">::</span>createMenus()
  {
      <span class="type"><a href="../qtwidgets/qmenu.html">QMenu</a></span> <span class="operator">*</span>fileMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">&gt;</span>addMenu(tr(<span class="string">&quot;&amp;File&quot;</span>));
      <span class="type"><a href="../qtwidgets/qaction.html">QAction</a></span> <span class="operator">*</span>openAct <span class="operator">=</span> fileMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(tr(<span class="string">&quot;&amp;Open...&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>MainWindow<span class="operator">::</span>open);
      openAct<span class="operator">-</span><span class="operator">&gt;</span>setShortcuts(<span class="type">QKeySequence</span><span class="operator">::</span>Open);

      <span class="type"><a href="../qtwidgets/qaction.html">QAction</a></span> <span class="operator">*</span>saveAsAct <span class="operator">=</span> fileMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(tr(<span class="string">&quot;&amp;Save As...&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>MainWindow<span class="operator">::</span>saveAs);
      saveAsAct<span class="operator">-</span><span class="operator">&gt;</span>setShortcuts(<span class="type">QKeySequence</span><span class="operator">::</span>SaveAs);

      <span class="type"><a href="../qtwidgets/qaction.html">QAction</a></span> <span class="operator">*</span>exitAct <span class="operator">=</span> fileMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(tr(<span class="string">&quot;E&amp;xit&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span><span class="type"><a href="../qtwidgets/qwidget.html">QWidget</a></span><span class="operator">::</span>close);
      exitAct<span class="operator">-</span><span class="operator">&gt;</span>setShortcuts(<span class="type">QKeySequence</span><span class="operator">::</span>Quit);

      menuBar()<span class="operator">-</span><span class="operator">&gt;</span>addSeparator();

      <span class="type"><a href="../qtwidgets/qmenu.html">QMenu</a></span> <span class="operator">*</span>helpMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">&gt;</span>addMenu(tr(<span class="string">&quot;&amp;Help&quot;</span>));
      helpMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(tr(<span class="string">&quot;&amp;About&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>MainWindow<span class="operator">::</span>about);
      helpMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(tr(<span class="string">&quot;About &amp;Qt&quot;</span>)<span class="operator">,</span> <a href="../qtwidgets/qapplication.html#qApp">qApp</a><span class="operator">,</span> <span class="operator">&amp;</span><span class="type"><a href="../qtcore/qcoreapplication.html">QCoreApplication</a></span><span class="operator">::</span>quit);
  }

</pre>
</div>
<!-- @@@streambookmarks/mainwindow.cpp -->
        </div>
       </div>
   </div>
   </div>
</div>
<div class="footer">
   <p>
   <acronym title="Copyright">&copy;</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>