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<h1 class="title">mainwindow.cpp Example File</h1>
<span class="small-subtitle">tools/settingseditor/mainwindow.cpp</span>
<!-- $$$tools/settingseditor/mainwindow.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp"> <span class="comment">/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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;QtGui&gt;</span>
<span class="preprocessor">#include &quot;locationdialog.h&quot;</span>
<span class="preprocessor">#include &quot;mainwindow.h&quot;</span>
<span class="preprocessor">#include &quot;settingstree.h&quot;</span>
MainWindow<span class="operator">::</span>MainWindow()
{
settingsTree <span class="operator">=</span> <span class="keyword">new</span> SettingsTree;
setCentralWidget(settingsTree);
locationDialog <span class="operator">=</span> <span class="number">0</span>;
createActions();
createMenus();
autoRefreshAct<span class="operator">-</span><span class="operator">&gt;</span>setChecked(<span class="keyword">true</span>);
fallbacksAct<span class="operator">-</span><span class="operator">&gt;</span>setChecked(<span class="keyword">true</span>);
setWindowTitle(tr(<span class="string">&quot;Settings Editor&quot;</span>));
resize(<span class="number">500</span><span class="operator">,</span> <span class="number">600</span>);
}
<span class="type">void</span> MainWindow<span class="operator">::</span>openSettings()
{
<span class="keyword">if</span> (<span class="operator">!</span>locationDialog)
locationDialog <span class="operator">=</span> <span class="keyword">new</span> LocationDialog(<span class="keyword">this</span>);
<span class="keyword">if</span> (locationDialog<span class="operator">-</span><span class="operator">&gt;</span>exec()) {
<span class="type"><a href="qsettings.html">QSettings</a></span> <span class="operator">*</span>settings <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qsettings.html">QSettings</a></span>(locationDialog<span class="operator">-</span><span class="operator">&gt;</span>format()<span class="operator">,</span>
locationDialog<span class="operator">-</span><span class="operator">&gt;</span>scope()<span class="operator">,</span>
locationDialog<span class="operator">-</span><span class="operator">&gt;</span>organization()<span class="operator">,</span>
locationDialog<span class="operator">-</span><span class="operator">&gt;</span>application());
setSettingsObject(settings);
fallbacksAct<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">true</span>);
}
}
<span class="type">void</span> MainWindow<span class="operator">::</span>openIniFile()
{
<span class="type"><a href="qstring.html">QString</a></span> fileName <span class="operator">=</span> <span class="type"><a href="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 INI File&quot;</span>)<span class="operator">,</span>
<span class="string">&quot;&quot;</span><span class="operator">,</span> tr(<span class="string">&quot;INI Files (*.ini *.conf)&quot;</span>));
<span class="keyword">if</span> (<span class="operator">!</span>fileName<span class="operator">.</span>isEmpty()) {
<span class="type"><a href="qsettings.html">QSettings</a></span> <span class="operator">*</span>settings <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qsettings.html">QSettings</a></span>(fileName<span class="operator">,</span> <span class="type"><a href="qsettings.html">QSettings</a></span><span class="operator">::</span>IniFormat);
setSettingsObject(settings);
fallbacksAct<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">false</span>);
}
}
<span class="type">void</span> MainWindow<span class="operator">::</span>openPropertyList()
{
<span class="type"><a href="qstring.html">QString</a></span> fileName <span class="operator">=</span> <span class="type"><a href="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 Property List&quot;</span>)<span class="operator">,</span>
<span class="string">&quot;&quot;</span><span class="operator">,</span> tr(<span class="string">&quot;Property List Files (*.plist)&quot;</span>));
<span class="keyword">if</span> (<span class="operator">!</span>fileName<span class="operator">.</span>isEmpty()) {
<span class="type"><a href="qsettings.html">QSettings</a></span> <span class="operator">*</span>settings <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qsettings.html">QSettings</a></span>(fileName<span class="operator">,</span> <span class="type"><a href="qsettings.html">QSettings</a></span><span class="operator">::</span>NativeFormat);
setSettingsObject(settings);
fallbacksAct<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">false</span>);
}
}
<span class="type">void</span> MainWindow<span class="operator">::</span>openRegistryPath()
{
<span class="type"><a href="qstring.html">QString</a></span> path <span class="operator">=</span> <span class="type"><a href="qinputdialog.html">QInputDialog</a></span><span class="operator">::</span>getText(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">&quot;Open Registry Path&quot;</span>)<span class="operator">,</span>
tr(<span class="string">&quot;Enter the path in the Windows registry:&quot;</span>)<span class="operator">,</span>
<span class="type"><a href="qlineedit.html">QLineEdit</a></span><span class="operator">::</span>Normal<span class="operator">,</span> <span class="string">&quot;HKEY_CURRENT_USER\\&quot;</span>);
<span class="keyword">if</span> (<span class="operator">!</span>path<span class="operator">.</span>isEmpty()) {
<span class="type"><a href="qsettings.html">QSettings</a></span> <span class="operator">*</span>settings <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qsettings.html">QSettings</a></span>(path<span class="operator">,</span> <span class="type"><a href="qsettings.html">QSettings</a></span><span class="operator">::</span>NativeFormat);
setSettingsObject(settings);
fallbacksAct<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">false</span>);
}
}
<span class="type">void</span> MainWindow<span class="operator">::</span>about()
{
<span class="type"><a href="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 Settings Editor&quot;</span>)<span class="operator">,</span>
tr(<span class="string">&quot;The &lt;b&gt;Settings Editor&lt;/b&gt; example shows how to access &quot;</span>
<span class="string">&quot;application settings using Qt.&quot;</span>));
}
<span class="type">void</span> MainWindow<span class="operator">::</span>createActions()
{
openSettingsAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">&quot;&amp;Open Application Settings...&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
openSettingsAct<span class="operator">-</span><span class="operator">&gt;</span>setShortcuts(<span class="type"><a href="qkeysequence.html">QKeySequence</a></span><span class="operator">::</span>Open);
connect(openSettingsAct<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(openSettings()));
openIniFileAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">&quot;Open I&amp;NI File...&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
openIniFileAct<span class="operator">-</span><span class="operator">&gt;</span>setShortcut(tr(<span class="string">&quot;Ctrl+N&quot;</span>));
connect(openIniFileAct<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(openIniFile()));
openPropertyListAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">&quot;Open Mac &amp;Property List...&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
openPropertyListAct<span class="operator">-</span><span class="operator">&gt;</span>setShortcut(tr(<span class="string">&quot;Ctrl+P&quot;</span>));
connect(openPropertyListAct<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(openPropertyList()));
openRegistryPathAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">&quot;Open Windows &amp;Registry Path...&quot;</span>)<span class="operator">,</span>
<span class="keyword">this</span>);
openRegistryPathAct<span class="operator">-</span><span class="operator">&gt;</span>setShortcut(tr(<span class="string">&quot;Ctrl+G&quot;</span>));
connect(openRegistryPathAct<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(openRegistryPath()));
refreshAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">&quot;&amp;Refresh&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
refreshAct<span class="operator">-</span><span class="operator">&gt;</span>setShortcut(tr(<span class="string">&quot;Ctrl+R&quot;</span>));
refreshAct<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">false</span>);
connect(refreshAct<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> settingsTree<span class="operator">,</span> SLOT(refresh()));
exitAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">&quot;E&amp;xit&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
exitAct<span class="operator">-</span><span class="operator">&gt;</span>setShortcuts(<span class="type"><a href="qkeysequence.html">QKeySequence</a></span><span class="operator">::</span>Quit);
connect(exitAct<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(close()));
autoRefreshAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">&quot;&amp;Auto-Refresh&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
autoRefreshAct<span class="operator">-</span><span class="operator">&gt;</span>setShortcut(tr(<span class="string">&quot;Ctrl+A&quot;</span>));
autoRefreshAct<span class="operator">-</span><span class="operator">&gt;</span>setCheckable(<span class="keyword">true</span>);
autoRefreshAct<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">false</span>);
connect(autoRefreshAct<span class="operator">,</span> SIGNAL(triggered(<span class="type">bool</span>))<span class="operator">,</span>
settingsTree<span class="operator">,</span> SLOT(setAutoRefresh(<span class="type">bool</span>)));
connect(autoRefreshAct<span class="operator">,</span> SIGNAL(triggered(<span class="type">bool</span>))<span class="operator">,</span>
refreshAct<span class="operator">,</span> SLOT(setDisabled(<span class="type">bool</span>)));
fallbacksAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">&quot;&amp;Fallbacks&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
fallbacksAct<span class="operator">-</span><span class="operator">&gt;</span>setShortcut(tr(<span class="string">&quot;Ctrl+F&quot;</span>));
fallbacksAct<span class="operator">-</span><span class="operator">&gt;</span>setCheckable(<span class="keyword">true</span>);
fallbacksAct<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">false</span>);
connect(fallbacksAct<span class="operator">,</span> SIGNAL(triggered(<span class="type">bool</span>))<span class="operator">,</span>
settingsTree<span class="operator">,</span> SLOT(setFallbacksEnabled(<span class="type">bool</span>)));
aboutAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">&quot;&amp;About&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
connect(aboutAct<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(about()));
aboutQtAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">&quot;About &amp;Qt&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
connect(aboutQtAct<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> qApp<span class="operator">,</span> SLOT(aboutQt()));
<span class="preprocessor">#ifndef Q_WS_MAC</span>
openPropertyListAct<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">false</span>);
<span class="preprocessor">#endif</span>
<span class="preprocessor">#ifndef Q_WS_WIN</span>
openRegistryPathAct<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">false</span>);
<span class="preprocessor">#endif</span>
}
<span class="type">void</span> MainWindow<span class="operator">::</span>createMenus()
{
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>));
fileMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(openSettingsAct);
fileMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(openIniFileAct);
fileMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(openPropertyListAct);
fileMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(openRegistryPathAct);
fileMenu<span class="operator">-</span><span class="operator">&gt;</span>addSeparator();
fileMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(refreshAct);
fileMenu<span class="operator">-</span><span class="operator">&gt;</span>addSeparator();
fileMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(exitAct);
optionsMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">&gt;</span>addMenu(tr(<span class="string">&quot;&amp;Options&quot;</span>));
optionsMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(autoRefreshAct);
optionsMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(fallbacksAct);
menuBar()<span class="operator">-</span><span class="operator">&gt;</span>addSeparator();
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(aboutAct);
helpMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(aboutQtAct);
}
<span class="type">void</span> MainWindow<span class="operator">::</span>setSettingsObject(<span class="type"><a href="qsettings.html">QSettings</a></span> <span class="operator">*</span>settings)
{
settings<span class="operator">-</span><span class="operator">&gt;</span>setFallbacksEnabled(fallbacksAct<span class="operator">-</span><span class="operator">&gt;</span>isChecked());
settingsTree<span class="operator">-</span><span class="operator">&gt;</span>setSettingsObject(settings);
refreshAct<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">true</span>);
autoRefreshAct<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">true</span>);
<span class="type"><a href="qstring.html">QString</a></span> niceName <span class="operator">=</span> settings<span class="operator">-</span><span class="operator">&gt;</span>fileName();
niceName<span class="operator">.</span>replace(<span class="string">&quot;\\&quot;</span><span class="operator">,</span> <span class="string">&quot;/&quot;</span>);
<span class="type">int</span> pos <span class="operator">=</span> niceName<span class="operator">.</span>lastIndexOf(<span class="string">&quot;/&quot;</span>);
<span class="keyword">if</span> (pos <span class="operator">!</span><span class="operator">=</span> <span class="operator">-</span><span class="number">1</span>)
niceName<span class="operator">.</span>remove(<span class="number">0</span><span class="operator">,</span> pos <span class="operator">+</span> <span class="number">1</span>);
<span class="keyword">if</span> (<span class="operator">!</span>settings<span class="operator">-</span><span class="operator">&gt;</span>isWritable())
niceName <span class="operator">=</span> tr(<span class="string">&quot;%1 (read only)&quot;</span>)<span class="operator">.</span>arg(niceName);
setWindowTitle(tr(<span class="string">&quot;%1 - %2&quot;</span>)<span class="operator">.</span>arg(niceName)<span class="operator">.</span>arg(tr(<span class="string">&quot;Settings Editor&quot;</span>)));
}</pre>
</div>
<!-- @@@tools/settingseditor/mainwindow.cpp -->
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