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qt4-x11/doc/html/demos-mainwindow-mainwindow-cpp.html
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<h1 class="title">mainwindow.cpp Example File</h1>
<span class="small-subtitle">demos/mainwindow/mainwindow.cpp</span>
<!-- $$$demos/mainwindow/mainwindow.cpp-description -->
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<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 demonstration applications of the Qt Toolkit.
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** Alternatively, this file may be used under the terms of the GNU
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****************************************************************************/</span>
<span class="preprocessor">#include &quot;mainwindow.h&quot;</span>
<span class="preprocessor">#include &quot;colorswatch.h&quot;</span>
<span class="preprocessor">#include &quot;toolbar.h&quot;</span>
<span class="preprocessor">#include &lt;QAction&gt;</span>
<span class="preprocessor">#include &lt;QLayout&gt;</span>
<span class="preprocessor">#include &lt;QMenu&gt;</span>
<span class="preprocessor">#include &lt;QMenuBar&gt;</span>
<span class="preprocessor">#include &lt;QStatusBar&gt;</span>
<span class="preprocessor">#include &lt;QTextEdit&gt;</span>
<span class="preprocessor">#include &lt;QFile&gt;</span>
<span class="preprocessor">#include &lt;QDataStream&gt;</span>
<span class="preprocessor">#include &lt;QFileDialog&gt;</span>
<span class="preprocessor">#include &lt;QMessageBox&gt;</span>
<span class="preprocessor">#include &lt;QSignalMapper&gt;</span>
<span class="preprocessor">#include &lt;QApplication&gt;</span>
<span class="preprocessor">#include &lt;QPainter&gt;</span>
<span class="preprocessor">#include &lt;QMouseEvent&gt;</span>
<span class="preprocessor">#include &lt;QLineEdit&gt;</span>
<span class="preprocessor">#include &lt;QComboBox&gt;</span>
<span class="preprocessor">#include &lt;QLabel&gt;</span>
<span class="preprocessor">#include &lt;QPushButton&gt;</span>
<span class="preprocessor">#include &lt;qdebug.h&gt;</span>
<span class="keyword">static</span> <span class="keyword">const</span> <span class="type">char</span> <span class="operator">*</span> <span class="keyword">const</span> message <span class="operator">=</span>
<span class="string">&quot;&lt;p&gt;&lt;b&gt;Qt Main Window Demo&lt;/b&gt;&lt;/p&gt;&quot;</span>
<span class="string">&quot;&lt;p&gt;This is a demonstration of the QMainWindow, QToolBar and &quot;</span>
<span class="string">&quot;QDockWidget classes.&lt;/p&gt;&quot;</span>
<span class="string">&quot;&lt;p&gt;The tool bar and dock widgets can be dragged around and rearranged &quot;</span>
<span class="string">&quot;using the mouse or via the menu.&lt;/p&gt;&quot;</span>
<span class="string">&quot;&lt;p&gt;Each dock widget contains a colored frame and a context &quot;</span>
<span class="string">&quot;(right-click) menu.&lt;/p&gt;&quot;</span>
<span class="preprocessor">#ifdef Q_WS_MAC</span>
<span class="string">&quot;&lt;p&gt;On Mac OS X, the \&quot;Black\&quot; dock widget has been created as a &quot;</span>
<span class="string">&quot;&lt;em&gt;Drawer&lt;/em&gt;, which is a special kind of QDockWidget.&lt;/p&gt;&quot;</span>
<span class="preprocessor">#endif</span>
;
<a href="qmetatype.html#Q_DECLARE_METATYPE">Q_DECLARE_METATYPE</a>(<span class="type"><a href="qdockwidget.html">QDockWidget</a></span><span class="operator">::</span>DockWidgetFeatures)
MainWindow<span class="operator">::</span>MainWindow(<span class="keyword">const</span> <span class="type"><a href="qmap.html">QMap</a></span><span class="operator">&lt;</span><span class="type"><a href="qstring.html">QString</a></span><span class="operator">,</span> <span class="type"><a href="qsize.html">QSize</a></span><span class="operator">&gt;</span> <span class="operator">&amp;</span>customSizeHints<span class="operator">,</span>
<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>WindowFlags flags)
: <span class="type"><a href="qmainwindow.html">QMainWindow</a></span>(parent<span class="operator">,</span> flags)
{
setObjectName(<span class="string">&quot;MainWindow&quot;</span>);
setWindowTitle(<span class="string">&quot;Qt Main Window Demo&quot;</span>);
center <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtextedit.html">QTextEdit</a></span>(<span class="keyword">this</span>);
center<span class="operator">-</span><span class="operator">&gt;</span>setReadOnly(<span class="keyword">true</span>);
center<span class="operator">-</span><span class="operator">&gt;</span>setMinimumSize(<span class="number">400</span><span class="operator">,</span> <span class="number">205</span>);
setCentralWidget(center);
setupToolBar();
setupMenuBar();
setupDockWidgets(customSizeHints);
statusBar()<span class="operator">-</span><span class="operator">&gt;</span>showMessage(tr(<span class="string">&quot;Status Bar&quot;</span>));
}
<span class="type">void</span> MainWindow<span class="operator">::</span>actionTriggered(<span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>action)
{
<a href="qtglobal.html#qDebug">qDebug</a>(<span class="string">&quot;action '%s' triggered&quot;</span><span class="operator">,</span> action<span class="operator">-</span><span class="operator">&gt;</span>text()<span class="operator">.</span>toLocal8Bit()<span class="operator">.</span>data());
}
<span class="type">void</span> MainWindow<span class="operator">::</span>setupToolBar()
{
<span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator">&lt;</span> <span class="number">3</span>; <span class="operator">+</span><span class="operator">+</span>i) {
ToolBar <span class="operator">*</span>tb <span class="operator">=</span> <span class="keyword">new</span> ToolBar(<span class="type"><a href="qstring.html">QString</a></span><span class="operator">::</span>fromLatin1(<span class="string">&quot;Tool Bar %1&quot;</span>)<span class="operator">.</span>arg(i <span class="operator">+</span> <span class="number">1</span>)<span class="operator">,</span> <span class="keyword">this</span>);
toolBars<span class="operator">.</span>append(tb);
addToolBar(tb);
}
}
<span class="type">void</span> MainWindow<span class="operator">::</span>setupMenuBar()
{
<span class="type"><a href="qmenu.html">QMenu</a></span> <span class="operator">*</span>menu <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="qaction.html">QAction</a></span> <span class="operator">*</span>action <span class="operator">=</span> menu<span class="operator">-</span><span class="operator">&gt;</span>addAction(tr(<span class="string">&quot;Save layout...&quot;</span>));
connect(action<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(saveLayout()));
action <span class="operator">=</span> menu<span class="operator">-</span><span class="operator">&gt;</span>addAction(tr(<span class="string">&quot;Load layout...&quot;</span>));
connect(action<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(loadLayout()));
action <span class="operator">=</span> menu<span class="operator">-</span><span class="operator">&gt;</span>addAction(tr(<span class="string">&quot;Switch layout direction&quot;</span>));
connect(action<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(switchLayoutDirection()));
menu<span class="operator">-</span><span class="operator">&gt;</span>addSeparator();
menu<span class="operator">-</span><span class="operator">&gt;</span>addAction(tr(<span class="string">&quot;&amp;Quit&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(close()));
mainWindowMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">&gt;</span>addMenu(tr(<span class="string">&quot;Main window&quot;</span>));
action <span class="operator">=</span> mainWindowMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(tr(<span class="string">&quot;Animated docks&quot;</span>));
action<span class="operator">-</span><span class="operator">&gt;</span>setCheckable(<span class="keyword">true</span>);
action<span class="operator">-</span><span class="operator">&gt;</span>setChecked(dockOptions() <span class="operator">&amp;</span> AnimatedDocks);
connect(action<span class="operator">,</span> SIGNAL(toggled(<span class="type">bool</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(setDockOptions()));
action <span class="operator">=</span> mainWindowMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(tr(<span class="string">&quot;Allow nested docks&quot;</span>));
action<span class="operator">-</span><span class="operator">&gt;</span>setCheckable(<span class="keyword">true</span>);
action<span class="operator">-</span><span class="operator">&gt;</span>setChecked(dockOptions() <span class="operator">&amp;</span> AllowNestedDocks);
connect(action<span class="operator">,</span> SIGNAL(toggled(<span class="type">bool</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(setDockOptions()));
action <span class="operator">=</span> mainWindowMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(tr(<span class="string">&quot;Allow tabbed docks&quot;</span>));
action<span class="operator">-</span><span class="operator">&gt;</span>setCheckable(<span class="keyword">true</span>);
action<span class="operator">-</span><span class="operator">&gt;</span>setChecked(dockOptions() <span class="operator">&amp;</span> AllowTabbedDocks);
connect(action<span class="operator">,</span> SIGNAL(toggled(<span class="type">bool</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(setDockOptions()));
action <span class="operator">=</span> mainWindowMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(tr(<span class="string">&quot;Force tabbed docks&quot;</span>));
action<span class="operator">-</span><span class="operator">&gt;</span>setCheckable(<span class="keyword">true</span>);
action<span class="operator">-</span><span class="operator">&gt;</span>setChecked(dockOptions() <span class="operator">&amp;</span> ForceTabbedDocks);
connect(action<span class="operator">,</span> SIGNAL(toggled(<span class="type">bool</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(setDockOptions()));
action <span class="operator">=</span> mainWindowMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(tr(<span class="string">&quot;Vertical tabs&quot;</span>));
action<span class="operator">-</span><span class="operator">&gt;</span>setCheckable(<span class="keyword">true</span>);
action<span class="operator">-</span><span class="operator">&gt;</span>setChecked(dockOptions() <span class="operator">&amp;</span> VerticalTabs);
connect(action<span class="operator">,</span> SIGNAL(toggled(<span class="type">bool</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(setDockOptions()));
<span class="type"><a href="qmenu.html">QMenu</a></span> <span class="operator">*</span>toolBarMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">&gt;</span>addMenu(tr(<span class="string">&quot;Tool bars&quot;</span>));
<span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator">&lt;</span> toolBars<span class="operator">.</span>count(); <span class="operator">+</span><span class="operator">+</span>i)
toolBarMenu<span class="operator">-</span><span class="operator">&gt;</span>addMenu(toolBars<span class="operator">.</span>at(i)<span class="operator">-</span><span class="operator">&gt;</span>menu);
dockWidgetMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">&gt;</span>addMenu(tr(<span class="string">&quot;&amp;Dock Widgets&quot;</span>));
}
<span class="type">void</span> MainWindow<span class="operator">::</span>setDockOptions()
{
DockOptions opts;
<span class="type"><a href="qlist.html">QList</a></span><span class="operator">&lt;</span><span class="type"><a href="qaction.html">QAction</a></span><span class="operator">*</span><span class="operator">&gt;</span> actions <span class="operator">=</span> mainWindowMenu<span class="operator">-</span><span class="operator">&gt;</span>actions();
<span class="keyword">if</span> (actions<span class="operator">.</span>at(<span class="number">0</span>)<span class="operator">-</span><span class="operator">&gt;</span>isChecked())
opts <span class="operator">|</span><span class="operator">=</span> AnimatedDocks;
<span class="keyword">if</span> (actions<span class="operator">.</span>at(<span class="number">1</span>)<span class="operator">-</span><span class="operator">&gt;</span>isChecked())
opts <span class="operator">|</span><span class="operator">=</span> AllowNestedDocks;
<span class="keyword">if</span> (actions<span class="operator">.</span>at(<span class="number">2</span>)<span class="operator">-</span><span class="operator">&gt;</span>isChecked())
opts <span class="operator">|</span><span class="operator">=</span> AllowTabbedDocks;
<span class="keyword">if</span> (actions<span class="operator">.</span>at(<span class="number">3</span>)<span class="operator">-</span><span class="operator">&gt;</span>isChecked())
opts <span class="operator">|</span><span class="operator">=</span> ForceTabbedDocks;
<span class="keyword">if</span> (actions<span class="operator">.</span>at(<span class="number">4</span>)<span class="operator">-</span><span class="operator">&gt;</span>isChecked())
opts <span class="operator">|</span><span class="operator">=</span> VerticalTabs;
<span class="type"><a href="qmainwindow.html">QMainWindow</a></span><span class="operator">::</span>setDockOptions(opts);
}
<span class="type">void</span> MainWindow<span class="operator">::</span>saveLayout()
{
<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>getSaveFileName(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">&quot;Save layout&quot;</span>));
<span class="keyword">if</span> (fileName<span class="operator">.</span>isEmpty())
<span class="keyword">return</span>;
<span class="type"><a href="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="qfile.html">QFile</a></span><span class="operator">::</span>WriteOnly)) {
<span class="type"><a href="qstring.html">QString</a></span> msg <span class="operator">=</span> tr(<span class="string">&quot;Failed to open %1\n%2&quot;</span>)
<span class="operator">.</span>arg(fileName)
<span class="operator">.</span>arg(file<span class="operator">.</span>errorString());
<span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>warning(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">&quot;Error&quot;</span>)<span class="operator">,</span> msg);
<span class="keyword">return</span>;
}
<span class="type"><a href="qbytearray.html">QByteArray</a></span> geo_data <span class="operator">=</span> saveGeometry();
<span class="type"><a href="qbytearray.html">QByteArray</a></span> layout_data <span class="operator">=</span> saveState();
<span class="type">bool</span> ok <span class="operator">=</span> file<span class="operator">.</span>putChar((<span class="type"><a href="qtglobal.html#uchar-typedef">uchar</a></span>)geo_data<span class="operator">.</span>size());
<span class="keyword">if</span> (ok)
ok <span class="operator">=</span> file<span class="operator">.</span>write(geo_data) <span class="operator">=</span><span class="operator">=</span> geo_data<span class="operator">.</span>size();
<span class="keyword">if</span> (ok)
ok <span class="operator">=</span> file<span class="operator">.</span>write(layout_data) <span class="operator">=</span><span class="operator">=</span> layout_data<span class="operator">.</span>size();
<span class="keyword">if</span> (<span class="operator">!</span>ok) {
<span class="type"><a href="qstring.html">QString</a></span> msg <span class="operator">=</span> tr(<span class="string">&quot;Error writing to %1\n%2&quot;</span>)
<span class="operator">.</span>arg(fileName)
<span class="operator">.</span>arg(file<span class="operator">.</span>errorString());
<span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>warning(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">&quot;Error&quot;</span>)<span class="operator">,</span> msg);
<span class="keyword">return</span>;
}
}
<span class="type">void</span> MainWindow<span class="operator">::</span>loadLayout()
{
<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;Load layout&quot;</span>));
<span class="keyword">if</span> (fileName<span class="operator">.</span>isEmpty())
<span class="keyword">return</span>;
<span class="type"><a href="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="qfile.html">QFile</a></span><span class="operator">::</span>ReadOnly)) {
<span class="type"><a href="qstring.html">QString</a></span> msg <span class="operator">=</span> tr(<span class="string">&quot;Failed to open %1\n%2&quot;</span>)
<span class="operator">.</span>arg(fileName)
<span class="operator">.</span>arg(file<span class="operator">.</span>errorString());
<span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>warning(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">&quot;Error&quot;</span>)<span class="operator">,</span> msg);
<span class="keyword">return</span>;
}
<span class="type"><a href="qtglobal.html#uchar-typedef">uchar</a></span> geo_size;
<span class="type"><a href="qbytearray.html">QByteArray</a></span> geo_data;
<span class="type"><a href="qbytearray.html">QByteArray</a></span> layout_data;
<span class="type">bool</span> ok <span class="operator">=</span> file<span class="operator">.</span>getChar((<span class="type">char</span><span class="operator">*</span>)<span class="operator">&amp;</span>geo_size);
<span class="keyword">if</span> (ok) {
geo_data <span class="operator">=</span> file<span class="operator">.</span>read(geo_size);
ok <span class="operator">=</span> geo_data<span class="operator">.</span>size() <span class="operator">=</span><span class="operator">=</span> geo_size;
}
<span class="keyword">if</span> (ok) {
layout_data <span class="operator">=</span> file<span class="operator">.</span>readAll();
ok <span class="operator">=</span> layout_data<span class="operator">.</span>size() <span class="operator">&gt;</span> <span class="number">0</span>;
}
<span class="keyword">if</span> (ok)
ok <span class="operator">=</span> restoreGeometry(geo_data);
<span class="keyword">if</span> (ok)
ok <span class="operator">=</span> restoreState(layout_data);
<span class="keyword">if</span> (<span class="operator">!</span>ok) {
<span class="type"><a href="qstring.html">QString</a></span> msg <span class="operator">=</span> tr(<span class="string">&quot;Error reading %1&quot;</span>)
<span class="operator">.</span>arg(fileName);
<span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>warning(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">&quot;Error&quot;</span>)<span class="operator">,</span> msg);
<span class="keyword">return</span>;
}
}
<span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>addAction(<span class="type"><a href="qmenu.html">QMenu</a></span> <span class="operator">*</span>menu<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&amp;</span>text<span class="operator">,</span> <span class="type"><a href="qactiongroup.html">QActionGroup</a></span> <span class="operator">*</span>group<span class="operator">,</span> <span class="type"><a href="qsignalmapper.html">QSignalMapper</a></span> <span class="operator">*</span>mapper<span class="operator">,</span>
<span class="type">int</span> id)
{
<span class="type">bool</span> first <span class="operator">=</span> group<span class="operator">-</span><span class="operator">&gt;</span>actions()<span class="operator">.</span>isEmpty();
<span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>result <span class="operator">=</span> menu<span class="operator">-</span><span class="operator">&gt;</span>addAction(text);
result<span class="operator">-</span><span class="operator">&gt;</span>setCheckable(<span class="keyword">true</span>);
result<span class="operator">-</span><span class="operator">&gt;</span>setChecked(first);
group<span class="operator">-</span><span class="operator">&gt;</span>addAction(result);
<span class="type"><a href="qobject.html">QObject</a></span><span class="operator">::</span>connect(result<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> mapper<span class="operator">,</span> SLOT(map()));
mapper<span class="operator">-</span><span class="operator">&gt;</span>setMapping(result<span class="operator">,</span> id);
<span class="keyword">return</span> result;
}
<span class="type">void</span> MainWindow<span class="operator">::</span>setupDockWidgets(<span class="keyword">const</span> <span class="type"><a href="qmap.html">QMap</a></span><span class="operator">&lt;</span><span class="type"><a href="qstring.html">QString</a></span><span class="operator">,</span> <span class="type"><a href="qsize.html">QSize</a></span><span class="operator">&gt;</span> <span class="operator">&amp;</span>customSizeHints)
{
<a href="qmetatype.html#qRegisterMetaType">qRegisterMetaType</a><span class="operator">&lt;</span><span class="type"><a href="qdockwidget.html">QDockWidget</a></span><span class="operator">::</span>DockWidgetFeatures<span class="operator">&gt;</span>();
mapper <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qsignalmapper.html">QSignalMapper</a></span>(<span class="keyword">this</span>);
connect(mapper<span class="operator">,</span> SIGNAL(mapped(<span class="type">int</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(setCorner(<span class="type">int</span>)));
<span class="type"><a href="qmenu.html">QMenu</a></span> <span class="operator">*</span>corner_menu <span class="operator">=</span> dockWidgetMenu<span class="operator">-</span><span class="operator">&gt;</span>addMenu(tr(<span class="string">&quot;Top left corner&quot;</span>));
<span class="type"><a href="qactiongroup.html">QActionGroup</a></span> <span class="operator">*</span>group <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qactiongroup.html">QActionGroup</a></span>(<span class="keyword">this</span>);
group<span class="operator">-</span><span class="operator">&gt;</span>setExclusive(<span class="keyword">true</span>);
<span class="operator">::</span>addAction(corner_menu<span class="operator">,</span> tr(<span class="string">&quot;Top dock area&quot;</span>)<span class="operator">,</span> group<span class="operator">,</span> mapper<span class="operator">,</span> <span class="number">0</span>);
<span class="operator">::</span>addAction(corner_menu<span class="operator">,</span> tr(<span class="string">&quot;Left dock area&quot;</span>)<span class="operator">,</span> group<span class="operator">,</span> mapper<span class="operator">,</span> <span class="number">1</span>);
corner_menu <span class="operator">=</span> dockWidgetMenu<span class="operator">-</span><span class="operator">&gt;</span>addMenu(tr(<span class="string">&quot;Top right corner&quot;</span>));
group <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qactiongroup.html">QActionGroup</a></span>(<span class="keyword">this</span>);
group<span class="operator">-</span><span class="operator">&gt;</span>setExclusive(<span class="keyword">true</span>);
<span class="operator">::</span>addAction(corner_menu<span class="operator">,</span> tr(<span class="string">&quot;Top dock area&quot;</span>)<span class="operator">,</span> group<span class="operator">,</span> mapper<span class="operator">,</span> <span class="number">2</span>);
<span class="operator">::</span>addAction(corner_menu<span class="operator">,</span> tr(<span class="string">&quot;Right dock area&quot;</span>)<span class="operator">,</span> group<span class="operator">,</span> mapper<span class="operator">,</span> <span class="number">3</span>);
corner_menu <span class="operator">=</span> dockWidgetMenu<span class="operator">-</span><span class="operator">&gt;</span>addMenu(tr(<span class="string">&quot;Bottom left corner&quot;</span>));
group <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qactiongroup.html">QActionGroup</a></span>(<span class="keyword">this</span>);
group<span class="operator">-</span><span class="operator">&gt;</span>setExclusive(<span class="keyword">true</span>);
<span class="operator">::</span>addAction(corner_menu<span class="operator">,</span> tr(<span class="string">&quot;Bottom dock area&quot;</span>)<span class="operator">,</span> group<span class="operator">,</span> mapper<span class="operator">,</span> <span class="number">4</span>);
<span class="operator">::</span>addAction(corner_menu<span class="operator">,</span> tr(<span class="string">&quot;Left dock area&quot;</span>)<span class="operator">,</span> group<span class="operator">,</span> mapper<span class="operator">,</span> <span class="number">5</span>);
corner_menu <span class="operator">=</span> dockWidgetMenu<span class="operator">-</span><span class="operator">&gt;</span>addMenu(tr(<span class="string">&quot;Bottom right corner&quot;</span>));
group <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qactiongroup.html">QActionGroup</a></span>(<span class="keyword">this</span>);
group<span class="operator">-</span><span class="operator">&gt;</span>setExclusive(<span class="keyword">true</span>);
<span class="operator">::</span>addAction(corner_menu<span class="operator">,</span> tr(<span class="string">&quot;Bottom dock area&quot;</span>)<span class="operator">,</span> group<span class="operator">,</span> mapper<span class="operator">,</span> <span class="number">6</span>);
<span class="operator">::</span>addAction(corner_menu<span class="operator">,</span> tr(<span class="string">&quot;Right dock area&quot;</span>)<span class="operator">,</span> group<span class="operator">,</span> mapper<span class="operator">,</span> <span class="number">7</span>);
dockWidgetMenu<span class="operator">-</span><span class="operator">&gt;</span>addSeparator();
<span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">struct</span> Set {
<span class="keyword">const</span> <span class="type">char</span> <span class="operator">*</span> name;
<span class="type"><a href="qtglobal.html#uint-typedef">uint</a></span> flags;
<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>DockWidgetArea area;
} sets <span class="operator">[</span><span class="operator">]</span> <span class="operator">=</span> {
<span class="preprocessor">#ifndef Q_WS_MAC</span>
{ <span class="string">&quot;Black&quot;</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>LeftDockWidgetArea }<span class="operator">,</span>
<span class="preprocessor">#else</span>
{ <span class="string">&quot;Black&quot;</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>Drawer<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>LeftDockWidgetArea }<span class="operator">,</span>
<span class="preprocessor">#endif</span>
{ <span class="string">&quot;White&quot;</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>RightDockWidgetArea }<span class="operator">,</span>
{ <span class="string">&quot;Red&quot;</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>TopDockWidgetArea }<span class="operator">,</span>
{ <span class="string">&quot;Green&quot;</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>TopDockWidgetArea }<span class="operator">,</span>
{ <span class="string">&quot;Blue&quot;</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>BottomDockWidgetArea }<span class="operator">,</span>
{ <span class="string">&quot;Yellow&quot;</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>BottomDockWidgetArea }
};
<span class="keyword">const</span> <span class="type">int</span> setCount <span class="operator">=</span> <span class="keyword">sizeof</span>(sets) <span class="operator">/</span> <span class="keyword">sizeof</span>(Set);
<span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator">&lt;</span> setCount; <span class="operator">+</span><span class="operator">+</span>i) {
ColorSwatch <span class="operator">*</span>swatch <span class="operator">=</span> <span class="keyword">new</span> ColorSwatch(tr(sets<span class="operator">[</span>i<span class="operator">]</span><span class="operator">.</span>name)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>WindowFlags(sets<span class="operator">[</span>i<span class="operator">]</span><span class="operator">.</span>flags));
<span class="keyword">if</span> (i<span class="operator">%</span><span class="number">2</span>)
swatch<span class="operator">-</span><span class="operator">&gt;</span>setWindowIcon(<span class="type"><a href="qicon.html">QIcon</a></span>(<span class="type"><a href="qpixmap.html">QPixmap</a></span>(<span class="string">&quot;:/res/qt.png&quot;</span>)));
<span class="keyword">if</span> (qstrcmp(sets<span class="operator">[</span>i<span class="operator">]</span><span class="operator">.</span>name<span class="operator">,</span> <span class="string">&quot;Blue&quot;</span>) <span class="operator">=</span><span class="operator">=</span> <span class="number">0</span>) {
BlueTitleBar <span class="operator">*</span>titlebar <span class="operator">=</span> <span class="keyword">new</span> BlueTitleBar(swatch);
swatch<span class="operator">-</span><span class="operator">&gt;</span>setTitleBarWidget(titlebar);
connect(swatch<span class="operator">,</span> SIGNAL(topLevelChanged(<span class="type">bool</span>))<span class="operator">,</span> titlebar<span class="operator">,</span> SLOT(updateMask()));
connect(swatch<span class="operator">,</span> SIGNAL(featuresChanged(<span class="type"><a href="qdockwidget.html">QDockWidget</a></span><span class="operator">::</span>DockWidgetFeatures))<span class="operator">,</span> titlebar<span class="operator">,</span> SLOT(updateMask())<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>QueuedConnection);
<span class="preprocessor">#ifdef Q_WS_QWS</span>
<span class="type"><a href="qpalette.html">QPalette</a></span> pal <span class="operator">=</span> palette();
pal<span class="operator">.</span>setBrush(backgroundRole()<span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span>(<span class="number">0</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span><span class="number">0</span>));
swatch<span class="operator">-</span><span class="operator">&gt;</span>setPalette(pal);
<span class="preprocessor">#endif</span>
}
<span class="type"><a href="qstring.html">QString</a></span> name <span class="operator">=</span> <span class="type"><a href="qstring.html">QString</a></span><span class="operator">::</span>fromLatin1(sets<span class="operator">[</span>i<span class="operator">]</span><span class="operator">.</span>name);
<span class="keyword">if</span> (customSizeHints<span class="operator">.</span>contains(name))
swatch<span class="operator">-</span><span class="operator">&gt;</span>setCustomSizeHint(customSizeHints<span class="operator">.</span>value(name));
addDockWidget(sets<span class="operator">[</span>i<span class="operator">]</span><span class="operator">.</span>area<span class="operator">,</span> swatch);
dockWidgetMenu<span class="operator">-</span><span class="operator">&gt;</span>addMenu(swatch<span class="operator">-</span><span class="operator">&gt;</span>menu);
}
createDockWidgetAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">&quot;Add dock widget...&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
connect(createDockWidgetAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(createDockWidget()));
destroyDockWidgetMenu <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qmenu.html">QMenu</a></span>(tr(<span class="string">&quot;Destroy dock widget&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
destroyDockWidgetMenu<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">false</span>);
connect(destroyDockWidgetMenu<span class="operator">,</span> SIGNAL(triggered(<span class="type"><a href="qaction.html">QAction</a></span><span class="operator">*</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(destroyDockWidget(<span class="type"><a href="qaction.html">QAction</a></span><span class="operator">*</span>)));
dockWidgetMenu<span class="operator">-</span><span class="operator">&gt;</span>addSeparator();
dockWidgetMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(createDockWidgetAction);
dockWidgetMenu<span class="operator">-</span><span class="operator">&gt;</span>addMenu(destroyDockWidgetMenu);
}
<span class="type">void</span> MainWindow<span class="operator">::</span>setCorner(<span class="type">int</span> id)
{
<span class="keyword">switch</span> (id) {
<span class="keyword">case</span> <span class="number">0</span>:
<span class="type"><a href="qmainwindow.html">QMainWindow</a></span><span class="operator">::</span>setCorner(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>TopLeftCorner<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>TopDockWidgetArea);
<span class="keyword">break</span>;
<span class="keyword">case</span> <span class="number">1</span>:
<span class="type"><a href="qmainwindow.html">QMainWindow</a></span><span class="operator">::</span>setCorner(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>TopLeftCorner<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>LeftDockWidgetArea);
<span class="keyword">break</span>;
<span class="keyword">case</span> <span class="number">2</span>:
<span class="type"><a href="qmainwindow.html">QMainWindow</a></span><span class="operator">::</span>setCorner(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>TopRightCorner<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>TopDockWidgetArea);
<span class="keyword">break</span>;
<span class="keyword">case</span> <span class="number">3</span>:
<span class="type"><a href="qmainwindow.html">QMainWindow</a></span><span class="operator">::</span>setCorner(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>TopRightCorner<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>RightDockWidgetArea);
<span class="keyword">break</span>;
<span class="keyword">case</span> <span class="number">4</span>:
<span class="type"><a href="qmainwindow.html">QMainWindow</a></span><span class="operator">::</span>setCorner(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>BottomLeftCorner<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>BottomDockWidgetArea);
<span class="keyword">break</span>;
<span class="keyword">case</span> <span class="number">5</span>:
<span class="type"><a href="qmainwindow.html">QMainWindow</a></span><span class="operator">::</span>setCorner(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>BottomLeftCorner<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>LeftDockWidgetArea);
<span class="keyword">break</span>;
<span class="keyword">case</span> <span class="number">6</span>:
<span class="type"><a href="qmainwindow.html">QMainWindow</a></span><span class="operator">::</span>setCorner(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>BottomRightCorner<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>BottomDockWidgetArea);
<span class="keyword">break</span>;
<span class="keyword">case</span> <span class="number">7</span>:
<span class="type"><a href="qmainwindow.html">QMainWindow</a></span><span class="operator">::</span>setCorner(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>BottomRightCorner<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>RightDockWidgetArea);
<span class="keyword">break</span>;
}
}
<span class="type">void</span> MainWindow<span class="operator">::</span>showEvent(<span class="type"><a href="qshowevent.html">QShowEvent</a></span> <span class="operator">*</span>event)
{
<span class="type"><a href="qmainwindow.html">QMainWindow</a></span><span class="operator">::</span>showEvent(event);
}
<span class="type">void</span> MainWindow<span class="operator">::</span>switchLayoutDirection()
{
<span class="keyword">if</span> (layoutDirection() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>LeftToRight)
qApp<span class="operator">-</span><span class="operator">&gt;</span>setLayoutDirection(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>RightToLeft);
<span class="keyword">else</span>
qApp<span class="operator">-</span><span class="operator">&gt;</span>setLayoutDirection(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>LeftToRight);
}
<span class="keyword">class</span> CreateDockWidgetDialog : <span class="keyword">public</span> <span class="type"><a href="qdialog.html">QDialog</a></span>
{
<span class="keyword">public</span>:
CreateDockWidgetDialog(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent <span class="operator">=</span> <span class="number">0</span>);
<span class="type"><a href="qstring.html">QString</a></span> objectName() <span class="keyword">const</span>;
<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>DockWidgetArea location() <span class="keyword">const</span>;
<span class="keyword">private</span>:
<span class="type"><a href="qlineedit.html">QLineEdit</a></span> <span class="operator">*</span>m_objectName;
<span class="type"><a href="qcombobox.html">QComboBox</a></span> <span class="operator">*</span>m_location;
};
CreateDockWidgetDialog<span class="operator">::</span>CreateDockWidgetDialog(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent)
: <span class="type"><a href="qdialog.html">QDialog</a></span>(parent)
{
<span class="type"><a href="qgridlayout.html">QGridLayout</a></span> <span class="operator">*</span>layout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgridlayout.html">QGridLayout</a></span>(<span class="keyword">this</span>);
layout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(<span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>(tr(<span class="string">&quot;Object name:&quot;</span>))<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span>);
m_objectName <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlineedit.html">QLineEdit</a></span>;
layout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(m_objectName<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span>);
layout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(<span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>(tr(<span class="string">&quot;Location:&quot;</span>))<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">0</span>);
m_location <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qcombobox.html">QComboBox</a></span>;
m_location<span class="operator">-</span><span class="operator">&gt;</span>setEditable(<span class="keyword">false</span>);
m_location<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Top&quot;</span>));
m_location<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Left&quot;</span>));
m_location<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Right&quot;</span>));
m_location<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Bottom&quot;</span>));
m_location<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Restore&quot;</span>));
layout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(m_location<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">1</span>);
<span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span> <span class="operator">*</span>buttonLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span>;
layout<span class="operator">-</span><span class="operator">&gt;</span>addLayout(buttonLayout<span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">2</span>);
buttonLayout<span class="operator">-</span><span class="operator">&gt;</span>addStretch();
<span class="type"><a href="qpushbutton.html">QPushButton</a></span> <span class="operator">*</span>cancelButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(tr(<span class="string">&quot;Cancel&quot;</span>));
connect(cancelButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(reject()));
buttonLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(cancelButton);
<span class="type"><a href="qpushbutton.html">QPushButton</a></span> <span class="operator">*</span>okButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(tr(<span class="string">&quot;Ok&quot;</span>));
connect(okButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(accept()));
buttonLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(okButton);
okButton<span class="operator">-</span><span class="operator">&gt;</span>setDefault(<span class="keyword">true</span>);
}
<span class="type"><a href="qstring.html">QString</a></span> CreateDockWidgetDialog<span class="operator">::</span>objectName() <span class="keyword">const</span>
{
<span class="keyword">return</span> m_objectName<span class="operator">-</span><span class="operator">&gt;</span>text();
}
<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>DockWidgetArea CreateDockWidgetDialog<span class="operator">::</span>location() <span class="keyword">const</span>
{
<span class="keyword">switch</span> (m_location<span class="operator">-</span><span class="operator">&gt;</span>currentIndex()) {
<span class="keyword">case</span> <span class="number">0</span>: <span class="keyword">return</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>TopDockWidgetArea;
<span class="keyword">case</span> <span class="number">1</span>: <span class="keyword">return</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>LeftDockWidgetArea;
<span class="keyword">case</span> <span class="number">2</span>: <span class="keyword">return</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>RightDockWidgetArea;
<span class="keyword">case</span> <span class="number">3</span>: <span class="keyword">return</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>BottomDockWidgetArea;
<span class="keyword">default</span>:
<span class="keyword">break</span>;
}
<span class="keyword">return</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>NoDockWidgetArea;
}
<span class="type">void</span> MainWindow<span class="operator">::</span>createDockWidget()
{
CreateDockWidgetDialog dialog(<span class="keyword">this</span>);
<span class="type">int</span> ret <span class="operator">=</span> dialog<span class="operator">.</span>exec();
<span class="keyword">if</span> (ret <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qdialog.html">QDialog</a></span><span class="operator">::</span>Rejected)
<span class="keyword">return</span>;
<span class="type"><a href="qdockwidget.html">QDockWidget</a></span> <span class="operator">*</span>dw <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qdockwidget.html">QDockWidget</a></span>;
dw<span class="operator">-</span><span class="operator">&gt;</span>setObjectName(dialog<span class="operator">.</span>objectName());
dw<span class="operator">-</span><span class="operator">&gt;</span>setWindowTitle(dialog<span class="operator">.</span>objectName());
dw<span class="operator">-</span><span class="operator">&gt;</span>setWidget(<span class="keyword">new</span> <span class="type"><a href="qtextedit.html">QTextEdit</a></span>);
<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>DockWidgetArea area <span class="operator">=</span> dialog<span class="operator">.</span>location();
<span class="keyword">switch</span> (area) {
<span class="keyword">case</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>LeftDockWidgetArea:
<span class="keyword">case</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>RightDockWidgetArea:
<span class="keyword">case</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>TopDockWidgetArea:
<span class="keyword">case</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>BottomDockWidgetArea:
addDockWidget(area<span class="operator">,</span> dw);
<span class="keyword">break</span>;
<span class="keyword">default</span>:
<span class="keyword">if</span> (<span class="operator">!</span>restoreDockWidget(dw)) {
<span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>warning(<span class="keyword">this</span><span class="operator">,</span> <span class="type"><a href="qstring.html">QString</a></span>()<span class="operator">,</span> tr(<span class="string">&quot;Failed to restore dock widget&quot;</span>));
<span class="keyword">delete</span> dw;
<span class="keyword">return</span>;
}
<span class="keyword">break</span>;
}
extraDockWidgets<span class="operator">.</span>append(dw);
destroyDockWidgetMenu<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">true</span>);
destroyDockWidgetMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(<span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(dialog<span class="operator">.</span>objectName()<span class="operator">,</span> <span class="keyword">this</span>));
}
<span class="type">void</span> MainWindow<span class="operator">::</span>destroyDockWidget(<span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>action)
{
<span class="type">int</span> index <span class="operator">=</span> destroyDockWidgetMenu<span class="operator">-</span><span class="operator">&gt;</span>actions()<span class="operator">.</span>indexOf(action);
<span class="keyword">delete</span> extraDockWidgets<span class="operator">.</span>takeAt(index);
destroyDockWidgetMenu<span class="operator">-</span><span class="operator">&gt;</span>removeAction(action);
action<span class="operator">-</span><span class="operator">&gt;</span>deleteLater();
<span class="keyword">if</span> (destroyDockWidgetMenu<span class="operator">-</span><span class="operator">&gt;</span>isEmpty())
destroyDockWidgetMenu<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">false</span>);
}</pre>
</div>
<!-- @@@demos/mainwindow/mainwindow.cpp -->
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