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<h1 class="title">mainwindow.cpp Example File</h1>
<span class="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) 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:
**
** "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
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
<span class="preprocessor">#include <QtWidgets></span>
<span class="preprocessor">#include "locationdialog.h"</span>
<span class="preprocessor">#include "mainwindow.h"</span>
<span class="preprocessor">#include "settingstree.h"</span>
MainWindow<span class="operator">::</span>MainWindow()
: settingsTree(<span class="keyword">new</span> SettingsTree)
<span class="operator">,</span> locationDialog(Q_NULLPTR)
{
setCentralWidget(settingsTree);
createActions();
autoRefreshAct<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>);
fallbacksAct<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>);
setWindowTitle(<span class="type"><a href="../qtcore/qcoreapplication.html">QCoreApplication</a></span><span class="operator">::</span>applicationName());
<span class="keyword">const</span> <span class="type"><a href="../qtcore/qrect.html">QRect</a></span> availableGeometry <span class="operator">=</span> <span class="type"><a href="qapplication.html">QApplication</a></span><span class="operator">::</span>desktop()<span class="operator">-</span><span class="operator">></span>availableGeometry(<span class="keyword">this</span>);
adjustSize();
move((availableGeometry<span class="operator">.</span>width() <span class="operator">-</span> width()) <span class="operator">/</span> <span class="number">2</span><span class="operator">,</span> (availableGeometry<span class="operator">.</span>height() <span class="operator">-</span> height()) <span class="operator">/</span> <span class="number">2</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">></span>exec() <span class="operator">!</span><span class="operator">=</span> <span class="type"><a href="qdialog.html">QDialog</a></span><span class="operator">::</span>Accepted)
<span class="keyword">return</span>;
SettingsPtr settings(<span class="keyword">new</span> <span class="type"><a href="../qtcore/qsettings.html">QSettings</a></span>(locationDialog<span class="operator">-</span><span class="operator">></span>format()<span class="operator">,</span>
locationDialog<span class="operator">-</span><span class="operator">></span>scope()<span class="operator">,</span>
locationDialog<span class="operator">-</span><span class="operator">></span>organization()<span class="operator">,</span>
locationDialog<span class="operator">-</span><span class="operator">></span>application()));
setSettingsObject(settings);
fallbacksAct<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">true</span>);
}
<span class="type">void</span> MainWindow<span class="operator">::</span>openIniFile()
{
<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> directory <span class="operator">=</span> <span class="type"><a href="../qtcore/qstandardpaths.html">QStandardPaths</a></span><span class="operator">::</span>writableLocation(<span class="type"><a href="../qtcore/qstandardpaths.html">QStandardPaths</a></span><span class="operator">::</span>ConfigLocation);
<span class="keyword">const</span> <span class="type"><a href="../qtcore/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">"Open INI File"</span>)<span class="operator">,</span>
directory<span class="operator">,</span> tr(<span class="string">"INI Files (*.ini *.conf)"</span>));
<span class="keyword">if</span> (fileName<span class="operator">.</span>isEmpty())
<span class="keyword">return</span>;
SettingsPtr settings(<span class="keyword">new</span> <span class="type"><a href="../qtcore/qsettings.html">QSettings</a></span>(fileName<span class="operator">,</span> <span class="type"><a href="../qtcore/qsettings.html">QSettings</a></span><span class="operator">::</span>IniFormat));
setSettingsObject(settings);
fallbacksAct<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>);
}
<span class="type">void</span> MainWindow<span class="operator">::</span>openPropertyList()
{
<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> directory <span class="operator">=</span> <span class="type"><a href="../qtcore/qstandardpaths.html">QStandardPaths</a></span><span class="operator">::</span>writableLocation(<span class="type"><a href="../qtcore/qstandardpaths.html">QStandardPaths</a></span><span class="operator">::</span>ConfigLocation);
<span class="keyword">const</span> <span class="type"><a href="../qtcore/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">"Open Property List"</span>)<span class="operator">,</span>
directory<span class="operator">,</span> tr(<span class="string">"Property List Files (*.plist)"</span>));
<span class="keyword">if</span> (fileName<span class="operator">.</span>isEmpty())
<span class="keyword">return</span>;
SettingsPtr settings(<span class="keyword">new</span> <span class="type"><a href="../qtcore/qsettings.html">QSettings</a></span>(fileName<span class="operator">,</span> <span class="type"><a href="../qtcore/qsettings.html">QSettings</a></span><span class="operator">::</span>NativeFormat));
setSettingsObject(settings);
fallbacksAct<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>);
}
<span class="type">void</span> MainWindow<span class="operator">::</span>openRegistryPath()
{
<span class="keyword">const</span> <span class="type"><a href="../qtcore/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">"Open Registry Path"</span>)<span class="operator">,</span>
tr(<span class="string">"Enter the path in the Windows registry:"</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">"HKEY_CURRENT_USER\\"</span>);
<span class="keyword">if</span> (path<span class="operator">.</span>isEmpty())
<span class="keyword">return</span>;
SettingsPtr settings(<span class="keyword">new</span> <span class="type"><a href="../qtcore/qsettings.html">QSettings</a></span>(path<span class="operator">,</span> <span class="type"><a href="../qtcore/qsettings.html">QSettings</a></span><span class="operator">::</span>NativeFormat));
setSettingsObject(settings);
fallbacksAct<span class="operator">-</span><span class="operator">></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">"About Settings Editor"</span>)<span class="operator">,</span>
tr(<span class="string">"The <b>Settings Editor</b> example shows how to access "</span>
<span class="string">"application settings using Qt."</span>));
}
<span class="type">void</span> MainWindow<span class="operator">::</span>createActions()
{
<span class="type"><a href="qmenu.html">QMenu</a></span> <span class="operator">*</span>fileMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">></span>addMenu(tr(<span class="string">"&File"</span>));
<span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>openSettingsAct <span class="operator">=</span> fileMenu<span class="operator">-</span><span class="operator">></span>addAction(tr(<span class="string">"&Open Application Settings..."</span>)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWindow<span class="operator">::</span>openSettings);
openSettingsAct<span class="operator">-</span><span class="operator">></span>setShortcuts(<span class="type"><a href="../qtgui/qkeysequence.html">QKeySequence</a></span><span class="operator">::</span>Open);
<span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>openIniFileAct <span class="operator">=</span> fileMenu<span class="operator">-</span><span class="operator">></span>addAction(tr(<span class="string">"Open I&NI File..."</span>)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWindow<span class="operator">::</span>openIniFile);
openIniFileAct<span class="operator">-</span><span class="operator">></span>setShortcut(tr(<span class="string">"Ctrl+N"</span>));
<span class="preprocessor">#ifdef Q_OS_OSX</span>
<span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>openPropertyListAct <span class="operator">=</span> fileMenu<span class="operator">-</span><span class="operator">></span>addAction(tr(<span class="string">"Open Apple &Property List..."</span>)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWindow<span class="operator">::</span>openPropertyList);
openPropertyListAct<span class="operator">-</span><span class="operator">></span>setShortcut(tr(<span class="string">"Ctrl+P"</span>));
<span class="preprocessor">#endif // Q_OS_OSX</span>
<span class="preprocessor">#ifdef Q_OS_WIN</span>
<span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>openRegistryPathAct <span class="operator">=</span> fileMenu<span class="operator">-</span><span class="operator">></span>addAction(tr(<span class="string">"Open Windows &Registry Path..."</span>)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWindow<span class="operator">::</span>openRegistryPath);
openRegistryPathAct<span class="operator">-</span><span class="operator">></span>setShortcut(tr(<span class="string">"Ctrl+G"</span>));
<span class="preprocessor">#endif // Q_OS_WIN</span>
fileMenu<span class="operator">-</span><span class="operator">></span>addSeparator();
refreshAct <span class="operator">=</span> fileMenu<span class="operator">-</span><span class="operator">></span>addAction(tr(<span class="string">"&Refresh"</span>)<span class="operator">,</span> settingsTree<span class="operator">,</span> <span class="operator">&</span>SettingsTree<span class="operator">::</span>refresh);
refreshAct<span class="operator">-</span><span class="operator">></span>setShortcut(tr(<span class="string">"Ctrl+R"</span>));
refreshAct<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>);
fileMenu<span class="operator">-</span><span class="operator">></span>addSeparator();
<span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>exitAct <span class="operator">=</span> fileMenu<span class="operator">-</span><span class="operator">></span>addAction(tr(<span class="string">"E&xit"</span>)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qwidget.html">QWidget</a></span><span class="operator">::</span>close);
exitAct<span class="operator">-</span><span class="operator">></span>setShortcuts(<span class="type"><a href="../qtgui/qkeysequence.html">QKeySequence</a></span><span class="operator">::</span>Quit);
<span class="type"><a href="qmenu.html">QMenu</a></span> <span class="operator">*</span>optionsMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">></span>addMenu(tr(<span class="string">"&Options"</span>));
autoRefreshAct <span class="operator">=</span> optionsMenu<span class="operator">-</span><span class="operator">></span>addAction(tr(<span class="string">"&Auto-Refresh"</span>));
autoRefreshAct<span class="operator">-</span><span class="operator">></span>setShortcut(tr(<span class="string">"Ctrl+A"</span>));
autoRefreshAct<span class="operator">-</span><span class="operator">></span>setCheckable(<span class="keyword">true</span>);
autoRefreshAct<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>);
connect(autoRefreshAct<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qaction.html">QAction</a></span><span class="operator">::</span>triggered<span class="operator">,</span>
settingsTree<span class="operator">,</span> <span class="operator">&</span>SettingsTree<span class="operator">::</span>setAutoRefresh);
connect(autoRefreshAct<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qaction.html">QAction</a></span><span class="operator">::</span>triggered<span class="operator">,</span>
refreshAct<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qaction.html">QAction</a></span><span class="operator">::</span>setDisabled);
fallbacksAct <span class="operator">=</span> optionsMenu<span class="operator">-</span><span class="operator">></span>addAction(tr(<span class="string">"&Fallbacks"</span>));
fallbacksAct<span class="operator">-</span><span class="operator">></span>setShortcut(tr(<span class="string">"Ctrl+F"</span>));
fallbacksAct<span class="operator">-</span><span class="operator">></span>setCheckable(<span class="keyword">true</span>);
fallbacksAct<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>);
connect(fallbacksAct<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qaction.html">QAction</a></span><span class="operator">::</span>triggered<span class="operator">,</span>
settingsTree<span class="operator">,</span> <span class="operator">&</span>SettingsTree<span class="operator">::</span>setFallbacksEnabled);
<span class="type"><a href="qmenu.html">QMenu</a></span> <span class="operator">*</span>helpMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">></span>addMenu(tr(<span class="string">"&Help"</span>));
helpMenu<span class="operator">-</span><span class="operator">></span>addAction(tr(<span class="string">"&About"</span>)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWindow<span class="operator">::</span>about);
helpMenu<span class="operator">-</span><span class="operator">></span>addAction(tr(<span class="string">"About &Qt"</span>)<span class="operator">,</span> qApp<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="../qtcore/qcoreapplication.html">QCoreApplication</a></span><span class="operator">::</span>quit);
}
<span class="type">void</span> MainWindow<span class="operator">::</span>setSettingsObject(<span class="keyword">const</span> SettingsPtr <span class="operator">&</span>settings)
{
settings<span class="operator">-</span><span class="operator">></span>setFallbacksEnabled(fallbacksAct<span class="operator">-</span><span class="operator">></span>isChecked());
settingsTree<span class="operator">-</span><span class="operator">></span>setSettingsObject(settings);
refreshAct<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">true</span>);
autoRefreshAct<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">true</span>);
<span class="type"><a href="../qtcore/qstring.html">QString</a></span> niceName <span class="operator">=</span> <span class="type"><a href="../qtcore/qdir.html">QDir</a></span><span class="operator">::</span>cleanPath(settings<span class="operator">-</span><span class="operator">></span>fileName());
<span class="type">int</span> pos <span class="operator">=</span> niceName<span class="operator">.</span>lastIndexOf(QLatin1Char(<span class="char">'/'</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">></span>isWritable())
niceName <span class="operator">=</span> tr(<span class="string">"%1 (read only)"</span>)<span class="operator">.</span>arg(niceName);
setWindowTitle(tr(<span class="string">"%1 - %2"</span>)<span class="operator">.</span>arg(niceName<span class="operator">,</span> <span class="type"><a href="../qtcore/qcoreapplication.html">QCoreApplication</a></span><span class="operator">::</span>applicationName()));
statusBar()<span class="operator">-</span><span class="operator">></span>showMessage(tr(<span class="string">"Opened \"%1\""</span>)<span class="operator">.</span>arg(<span class="type"><a href="../qtcore/qdir.html">QDir</a></span><span class="operator">::</span>toNativeSeparators(settings<span class="operator">-</span><span class="operator">></span>fileName())));
}
</pre>
</div>
<!-- @@@tools/settingseditor/mainwindow.cpp -->
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