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<h1 class="title">mainwindow.cpp Example File</h1>
<span class="subtitle">mainwindows/mdi/mainwindow.cpp</span>
<!-- $$$mainwindows/mdi/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
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** 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 "mainwindow.h"</span>
<span class="preprocessor">#include "mdichild.h"</span>
MainWindow<span class="operator">::</span>MainWindow()
: mdiArea(<span class="keyword">new</span> <span class="type"><a href="qmdiarea.html">QMdiArea</a></span>)
{
mdiArea<span class="operator">-</span><span class="operator">></span>setHorizontalScrollBarPolicy(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>ScrollBarAsNeeded);
mdiArea<span class="operator">-</span><span class="operator">></span>setVerticalScrollBarPolicy(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>ScrollBarAsNeeded);
setCentralWidget(mdiArea);
connect(mdiArea<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmdiarea.html">QMdiArea</a></span><span class="operator">::</span>subWindowActivated<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWindow<span class="operator">::</span>updateMenus);
createActions();
createStatusBar();
updateMenus();
readSettings();
setWindowTitle(tr(<span class="string">"MDI"</span>));
setUnifiedTitleAndToolBarOnMac(<span class="keyword">true</span>);
}
<span class="type">void</span> MainWindow<span class="operator">::</span>closeEvent(<span class="type"><a href="../qtgui/qcloseevent.html">QCloseEvent</a></span> <span class="operator">*</span>event)
{
mdiArea<span class="operator">-</span><span class="operator">></span>closeAllSubWindows();
<span class="keyword">if</span> (mdiArea<span class="operator">-</span><span class="operator">></span>currentSubWindow()) {
event<span class="operator">-</span><span class="operator">></span>ignore();
} <span class="keyword">else</span> {
writeSettings();
event<span class="operator">-</span><span class="operator">></span>accept();
}
}
<span class="type">void</span> MainWindow<span class="operator">::</span>newFile()
{
MdiChild <span class="operator">*</span>child <span class="operator">=</span> createMdiChild();
child<span class="operator">-</span><span class="operator">></span>newFile();
child<span class="operator">-</span><span class="operator">></span>show();
}
<span class="type">void</span> MainWindow<span class="operator">::</span>open()
{
<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="keyword">if</span> (<span class="operator">!</span>fileName<span class="operator">.</span>isEmpty())
openFile(fileName);
}
bool MainWindow<span class="operator">::</span>openFile(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>fileName)
{
<span class="keyword">if</span> (<span class="type"><a href="qmdisubwindow.html">QMdiSubWindow</a></span> <span class="operator">*</span>existing <span class="operator">=</span> findMdiChild(fileName)) {
mdiArea<span class="operator">-</span><span class="operator">></span>setActiveSubWindow(existing);
<span class="keyword">return</span> <span class="keyword">true</span>;
}
<span class="keyword">const</span> bool succeeded <span class="operator">=</span> loadFile(fileName);
<span class="keyword">if</span> (succeeded)
statusBar()<span class="operator">-</span><span class="operator">></span>showMessage(tr(<span class="string">"File loaded"</span>)<span class="operator">,</span> <span class="number">2000</span>);
<span class="keyword">return</span> succeeded;
}
bool MainWindow<span class="operator">::</span>loadFile(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>fileName)
{
MdiChild <span class="operator">*</span>child <span class="operator">=</span> createMdiChild();
<span class="keyword">const</span> bool succeeded <span class="operator">=</span> child<span class="operator">-</span><span class="operator">></span>loadFile(fileName);
<span class="keyword">if</span> (succeeded)
child<span class="operator">-</span><span class="operator">></span>show();
<span class="keyword">else</span>
child<span class="operator">-</span><span class="operator">></span>close();
MainWindow<span class="operator">::</span>prependToRecentFiles(fileName);
<span class="keyword">return</span> succeeded;
}
<span class="keyword">static</span> <span class="keyword">inline</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> recentFilesKey() { <span class="keyword">return</span> <span class="type"><a href="../qtcore/qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">"recentFileList"</span>); }
<span class="keyword">static</span> <span class="keyword">inline</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> fileKey() { <span class="keyword">return</span> <span class="type"><a href="../qtcore/qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">"file"</span>); }
<span class="keyword">static</span> <span class="type"><a href="../qtcore/qstringlist.html">QStringList</a></span> readRecentFiles(<span class="type"><a href="../qtcore/qsettings.html">QSettings</a></span> <span class="operator">&</span>settings)
{
<span class="type"><a href="../qtcore/qstringlist.html">QStringList</a></span> result;
<span class="keyword">const</span> <span class="type">int</span> count <span class="operator">=</span> settings<span class="operator">.</span>beginReadArray(recentFilesKey());
<span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> count; <span class="operator">+</span><span class="operator">+</span>i) {
settings<span class="operator">.</span>setArrayIndex(i);
result<span class="operator">.</span>append(settings<span class="operator">.</span>value(fileKey())<span class="operator">.</span>toString());
}
settings<span class="operator">.</span>endArray();
<span class="keyword">return</span> result;
}
<span class="keyword">static</span> <span class="type">void</span> writeRecentFiles(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstringlist.html">QStringList</a></span> <span class="operator">&</span>files<span class="operator">,</span> <span class="type"><a href="../qtcore/qsettings.html">QSettings</a></span> <span class="operator">&</span>settings)
{
<span class="keyword">const</span> <span class="type">int</span> count <span class="operator">=</span> files<span class="operator">.</span>size();
settings<span class="operator">.</span>beginWriteArray(recentFilesKey());
<span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> count; <span class="operator">+</span><span class="operator">+</span>i) {
settings<span class="operator">.</span>setArrayIndex(i);
settings<span class="operator">.</span>setValue(fileKey()<span class="operator">,</span> files<span class="operator">.</span>at(i));
}
settings<span class="operator">.</span>endArray();
}
bool MainWindow<span class="operator">::</span>hasRecentFiles()
{
<span class="type"><a href="../qtcore/qsettings.html">QSettings</a></span> settings(<span class="type"><a href="../qtcore/qcoreapplication.html">QCoreApplication</a></span><span class="operator">::</span>organizationName()<span class="operator">,</span> <span class="type"><a href="../qtcore/qcoreapplication.html">QCoreApplication</a></span><span class="operator">::</span>applicationName());
<span class="keyword">const</span> <span class="type">int</span> count <span class="operator">=</span> settings<span class="operator">.</span>beginReadArray(recentFilesKey());
settings<span class="operator">.</span>endArray();
<span class="keyword">return</span> count <span class="operator">></span> <span class="number">0</span>;
}
<span class="type">void</span> MainWindow<span class="operator">::</span>prependToRecentFiles(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>fileName)
{
<span class="type"><a href="../qtcore/qsettings.html">QSettings</a></span> settings(<span class="type"><a href="../qtcore/qcoreapplication.html">QCoreApplication</a></span><span class="operator">::</span>organizationName()<span class="operator">,</span> <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/qstringlist.html">QStringList</a></span> oldRecentFiles <span class="operator">=</span> readRecentFiles(settings);
<span class="type"><a href="../qtcore/qstringlist.html">QStringList</a></span> recentFiles <span class="operator">=</span> oldRecentFiles;
recentFiles<span class="operator">.</span>removeAll(fileName);
recentFiles<span class="operator">.</span>prepend(fileName);
<span class="keyword">if</span> (oldRecentFiles <span class="operator">!</span><span class="operator">=</span> recentFiles)
writeRecentFiles(recentFiles<span class="operator">,</span> settings);
setRecentFilesVisible(<span class="operator">!</span>recentFiles<span class="operator">.</span>isEmpty());
}
<span class="type">void</span> MainWindow<span class="operator">::</span>setRecentFilesVisible(bool visible)
{
recentFileSubMenuAct<span class="operator">-</span><span class="operator">></span>setVisible(visible);
recentFileSeparator<span class="operator">-</span><span class="operator">></span>setVisible(visible);
}
<span class="type">void</span> MainWindow<span class="operator">::</span>updateRecentFileActions()
{
<span class="type"><a href="../qtcore/qsettings.html">QSettings</a></span> settings(<span class="type"><a href="../qtcore/qcoreapplication.html">QCoreApplication</a></span><span class="operator">::</span>organizationName()<span class="operator">,</span> <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/qstringlist.html">QStringList</a></span> recentFiles <span class="operator">=</span> readRecentFiles(settings);
<span class="keyword">const</span> <span class="type">int</span> count <span class="operator">=</span> <a href="../qtcore/qtglobal.html#qMin">qMin</a>(<span class="type">int</span>(MaxRecentFiles)<span class="operator">,</span> recentFiles<span class="operator">.</span>size());
<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>;
<span class="keyword">for</span> ( ; i <span class="operator"><</span> count; <span class="operator">+</span><span class="operator">+</span>i) {
<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="../qtcore/qfileinfo.html">QFileInfo</a></span>(recentFiles<span class="operator">.</span>at(i))<span class="operator">.</span>fileName();
recentFileActs<span class="operator">[</span>i<span class="operator">]</span><span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"&%1 %2"</span>)<span class="operator">.</span>arg(i <span class="operator">+</span> <span class="number">1</span>)<span class="operator">.</span>arg(fileName));
recentFileActs<span class="operator">[</span>i<span class="operator">]</span><span class="operator">-</span><span class="operator">></span>setData(recentFiles<span class="operator">.</span>at(i));
recentFileActs<span class="operator">[</span>i<span class="operator">]</span><span class="operator">-</span><span class="operator">></span>setVisible(<span class="keyword">true</span>);
}
<span class="keyword">for</span> ( ; i <span class="operator"><</span> MaxRecentFiles; <span class="operator">+</span><span class="operator">+</span>i)
recentFileActs<span class="operator">[</span>i<span class="operator">]</span><span class="operator">-</span><span class="operator">></span>setVisible(<span class="keyword">false</span>);
}
<span class="type">void</span> MainWindow<span class="operator">::</span>openRecentFile()
{
<span class="keyword">if</span> (<span class="keyword">const</span> <span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>action <span class="operator">=</span> qobject_cast<span class="operator"><</span><span class="keyword">const</span> <span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span><span class="operator">></span>(sender()))
openFile(action<span class="operator">-</span><span class="operator">></span>data()<span class="operator">.</span>toString());
}
<span class="type">void</span> MainWindow<span class="operator">::</span>save()
{
<span class="keyword">if</span> (activeMdiChild() <span class="operator">&</span><span class="operator">&</span> activeMdiChild()<span class="operator">-</span><span class="operator">></span>save())
statusBar()<span class="operator">-</span><span class="operator">></span>showMessage(tr(<span class="string">"File saved"</span>)<span class="operator">,</span> <span class="number">2000</span>);
}
<span class="type">void</span> MainWindow<span class="operator">::</span>saveAs()
{
MdiChild <span class="operator">*</span>child <span class="operator">=</span> activeMdiChild();
<span class="keyword">if</span> (child <span class="operator">&</span><span class="operator">&</span> child<span class="operator">-</span><span class="operator">></span>saveAs()) {
statusBar()<span class="operator">-</span><span class="operator">></span>showMessage(tr(<span class="string">"File saved"</span>)<span class="operator">,</span> <span class="number">2000</span>);
MainWindow<span class="operator">::</span>prependToRecentFiles(child<span class="operator">-</span><span class="operator">></span>currentFile());
}
}
<span class="preprocessor">#ifndef QT_NO_CLIPBOARD</span>
<span class="type">void</span> MainWindow<span class="operator">::</span>cut()
{
<span class="keyword">if</span> (activeMdiChild())
activeMdiChild()<span class="operator">-</span><span class="operator">></span>cut();
}
<span class="type">void</span> MainWindow<span class="operator">::</span>copy()
{
<span class="keyword">if</span> (activeMdiChild())
activeMdiChild()<span class="operator">-</span><span class="operator">></span>copy();
}
<span class="type">void</span> MainWindow<span class="operator">::</span>paste()
{
<span class="keyword">if</span> (activeMdiChild())
activeMdiChild()<span class="operator">-</span><span class="operator">></span>paste();
}
<span class="preprocessor">#endif</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 MDI"</span>)<span class="operator">,</span>
tr(<span class="string">"The <b>MDI</b> example demonstrates how to write multiple "</span>
<span class="string">"document interface applications using Qt."</span>));
}
<span class="type">void</span> MainWindow<span class="operator">::</span>updateMenus()
{
bool hasMdiChild <span class="operator">=</span> (activeMdiChild() <span class="operator">!</span><span class="operator">=</span> <span class="number">0</span>);
saveAct<span class="operator">-</span><span class="operator">></span>setEnabled(hasMdiChild);
saveAsAct<span class="operator">-</span><span class="operator">></span>setEnabled(hasMdiChild);
<span class="preprocessor">#ifndef QT_NO_CLIPBOARD</span>
pasteAct<span class="operator">-</span><span class="operator">></span>setEnabled(hasMdiChild);
<span class="preprocessor">#endif</span>
closeAct<span class="operator">-</span><span class="operator">></span>setEnabled(hasMdiChild);
closeAllAct<span class="operator">-</span><span class="operator">></span>setEnabled(hasMdiChild);
tileAct<span class="operator">-</span><span class="operator">></span>setEnabled(hasMdiChild);
cascadeAct<span class="operator">-</span><span class="operator">></span>setEnabled(hasMdiChild);
nextAct<span class="operator">-</span><span class="operator">></span>setEnabled(hasMdiChild);
previousAct<span class="operator">-</span><span class="operator">></span>setEnabled(hasMdiChild);
windowMenuSeparatorAct<span class="operator">-</span><span class="operator">></span>setVisible(hasMdiChild);
<span class="preprocessor">#ifndef QT_NO_CLIPBOARD</span>
bool hasSelection <span class="operator">=</span> (activeMdiChild() <span class="operator">&</span><span class="operator">&</span>
activeMdiChild()<span class="operator">-</span><span class="operator">></span>textCursor()<span class="operator">.</span>hasSelection());
cutAct<span class="operator">-</span><span class="operator">></span>setEnabled(hasSelection);
copyAct<span class="operator">-</span><span class="operator">></span>setEnabled(hasSelection);
<span class="preprocessor">#endif</span>
}
<span class="type">void</span> MainWindow<span class="operator">::</span>updateWindowMenu()
{
windowMenu<span class="operator">-</span><span class="operator">></span>clear();
windowMenu<span class="operator">-</span><span class="operator">></span>addAction(closeAct);
windowMenu<span class="operator">-</span><span class="operator">></span>addAction(closeAllAct);
windowMenu<span class="operator">-</span><span class="operator">></span>addSeparator();
windowMenu<span class="operator">-</span><span class="operator">></span>addAction(tileAct);
windowMenu<span class="operator">-</span><span class="operator">></span>addAction(cascadeAct);
windowMenu<span class="operator">-</span><span class="operator">></span>addSeparator();
windowMenu<span class="operator">-</span><span class="operator">></span>addAction(nextAct);
windowMenu<span class="operator">-</span><span class="operator">></span>addAction(previousAct);
windowMenu<span class="operator">-</span><span class="operator">></span>addAction(windowMenuSeparatorAct);
<span class="type"><a href="../qtcore/qlist.html">QList</a></span><span class="operator"><</span><span class="type"><a href="qmdisubwindow.html">QMdiSubWindow</a></span> <span class="operator">*</span><span class="operator">></span> windows <span class="operator">=</span> mdiArea<span class="operator">-</span><span class="operator">></span>subWindowList();
windowMenuSeparatorAct<span class="operator">-</span><span class="operator">></span>setVisible(<span class="operator">!</span>windows<span class="operator">.</span>isEmpty());
<span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> windows<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i) {
<span class="type"><a href="qmdisubwindow.html">QMdiSubWindow</a></span> <span class="operator">*</span>mdiSubWindow <span class="operator">=</span> windows<span class="operator">.</span>at(i);
MdiChild <span class="operator">*</span>child <span class="operator">=</span> qobject_cast<span class="operator"><</span>MdiChild <span class="operator">*</span><span class="operator">></span>(mdiSubWindow<span class="operator">-</span><span class="operator">></span>widget());
<span class="type"><a href="../qtcore/qstring.html">QString</a></span> text;
<span class="keyword">if</span> (i <span class="operator"><</span> <span class="number">9</span>) {
text <span class="operator">=</span> tr(<span class="string">"&%1 %2"</span>)<span class="operator">.</span>arg(i <span class="operator">+</span> <span class="number">1</span>)
<span class="operator">.</span>arg(child<span class="operator">-</span><span class="operator">></span>userFriendlyCurrentFile());
} <span class="keyword">else</span> {
text <span class="operator">=</span> tr(<span class="string">"%1 %2"</span>)<span class="operator">.</span>arg(i <span class="operator">+</span> <span class="number">1</span>)
<span class="operator">.</span>arg(child<span class="operator">-</span><span class="operator">></span>userFriendlyCurrentFile());
}
<span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>action <span class="operator">=</span> windowMenu<span class="operator">-</span><span class="operator">></span>addAction(text<span class="operator">,</span> mdiSubWindow<span class="operator">,</span> <span class="operator">[</span><span class="keyword">this</span><span class="operator">,</span> mdiSubWindow<span class="operator">]</span>() {
mdiArea<span class="operator">-</span><span class="operator">></span>setActiveSubWindow(mdiSubWindow);
});
action<span class="operator">-</span><span class="operator">></span>setCheckable(<span class="keyword">true</span>);
action <span class="operator">-</span><span class="operator">></span>setChecked(child <span class="operator">=</span><span class="operator">=</span> activeMdiChild());
}
}
MdiChild <span class="operator">*</span>MainWindow<span class="operator">::</span>createMdiChild()
{
MdiChild <span class="operator">*</span>child <span class="operator">=</span> <span class="keyword">new</span> MdiChild;
mdiArea<span class="operator">-</span><span class="operator">></span>addSubWindow(child);
<span class="preprocessor">#ifndef QT_NO_CLIPBOARD</span>
connect(child<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qtextedit.html">QTextEdit</a></span><span class="operator">::</span>copyAvailable<span class="operator">,</span> cutAct<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qaction.html">QAction</a></span><span class="operator">::</span>setEnabled);
connect(child<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qtextedit.html">QTextEdit</a></span><span class="operator">::</span>copyAvailable<span class="operator">,</span> copyAct<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qaction.html">QAction</a></span><span class="operator">::</span>setEnabled);
<span class="preprocessor">#endif</span>
<span class="keyword">return</span> child;
}
<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="qtoolbar.html">QToolBar</a></span> <span class="operator">*</span>fileToolBar <span class="operator">=</span> addToolBar(tr(<span class="string">"File"</span>));
<span class="keyword">const</span> <span class="type"><a href="../qtgui/qicon.html">QIcon</a></span> newIcon <span class="operator">=</span> <span class="type"><a href="../qtgui/qicon.html">QIcon</a></span><span class="operator">::</span>fromTheme(<span class="string">"document-new"</span><span class="operator">,</span> <span class="type"><a href="../qtgui/qicon.html">QIcon</a></span>(<span class="string">":/images/new.png"</span>));
newAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(newIcon<span class="operator">,</span> tr(<span class="string">"&New"</span>)<span class="operator">,</span> <span class="keyword">this</span>);
newAct<span class="operator">-</span><span class="operator">></span>setShortcuts(<span class="type"><a href="../qtgui/qkeysequence.html">QKeySequence</a></span><span class="operator">::</span>New);
newAct<span class="operator">-</span><span class="operator">></span>setStatusTip(tr(<span class="string">"Create a new file"</span>));
connect(newAct<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> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWindow<span class="operator">::</span>newFile);
fileMenu<span class="operator">-</span><span class="operator">></span>addAction(newAct);
fileToolBar<span class="operator">-</span><span class="operator">></span>addAction(newAct);
<span class="keyword">const</span> <span class="type"><a href="../qtgui/qicon.html">QIcon</a></span> openIcon <span class="operator">=</span> <span class="type"><a href="../qtgui/qicon.html">QIcon</a></span><span class="operator">::</span>fromTheme(<span class="string">"document-open"</span><span class="operator">,</span> <span class="type"><a href="../qtgui/qicon.html">QIcon</a></span>(<span class="string">":/images/open.png"</span>));
<span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>openAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(openIcon<span class="operator">,</span> tr(<span class="string">"&Open..."</span>)<span class="operator">,</span> <span class="keyword">this</span>);
openAct<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);
openAct<span class="operator">-</span><span class="operator">></span>setStatusTip(tr(<span class="string">"Open an existing file"</span>));
connect(openAct<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> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWindow<span class="operator">::</span>open);
fileMenu<span class="operator">-</span><span class="operator">></span>addAction(openAct);
fileToolBar<span class="operator">-</span><span class="operator">></span>addAction(openAct);
<span class="keyword">const</span> <span class="type"><a href="../qtgui/qicon.html">QIcon</a></span> saveIcon <span class="operator">=</span> <span class="type"><a href="../qtgui/qicon.html">QIcon</a></span><span class="operator">::</span>fromTheme(<span class="string">"document-save"</span><span class="operator">,</span> <span class="type"><a href="../qtgui/qicon.html">QIcon</a></span>(<span class="string">":/images/save.png"</span>));
saveAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(saveIcon<span class="operator">,</span> tr(<span class="string">"&Save"</span>)<span class="operator">,</span> <span class="keyword">this</span>);
saveAct<span class="operator">-</span><span class="operator">></span>setShortcuts(<span class="type"><a href="../qtgui/qkeysequence.html">QKeySequence</a></span><span class="operator">::</span>Save);
saveAct<span class="operator">-</span><span class="operator">></span>setStatusTip(tr(<span class="string">"Save the document to disk"</span>));
connect(saveAct<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> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWindow<span class="operator">::</span>save);
fileToolBar<span class="operator">-</span><span class="operator">></span>addAction(saveAct);
<span class="keyword">const</span> <span class="type"><a href="../qtgui/qicon.html">QIcon</a></span> saveAsIcon <span class="operator">=</span> <span class="type"><a href="../qtgui/qicon.html">QIcon</a></span><span class="operator">::</span>fromTheme(<span class="string">"document-save-as"</span>);
saveAsAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(saveAsIcon<span class="operator">,</span> tr(<span class="string">"Save &As..."</span>)<span class="operator">,</span> <span class="keyword">this</span>);
saveAsAct<span class="operator">-</span><span class="operator">></span>setShortcuts(<span class="type"><a href="../qtgui/qkeysequence.html">QKeySequence</a></span><span class="operator">::</span>SaveAs);
saveAsAct<span class="operator">-</span><span class="operator">></span>setStatusTip(tr(<span class="string">"Save the document under a new name"</span>));
connect(saveAsAct<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> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWindow<span class="operator">::</span>saveAs);
fileMenu<span class="operator">-</span><span class="operator">></span>addAction(saveAsAct);
fileMenu<span class="operator">-</span><span class="operator">></span>addSeparator();
<span class="type"><a href="qmenu.html">QMenu</a></span> <span class="operator">*</span>recentMenu <span class="operator">=</span> fileMenu<span class="operator">-</span><span class="operator">></span>addMenu(tr(<span class="string">"Recent..."</span>));
connect(recentMenu<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmenu.html">QMenu</a></span><span class="operator">::</span>aboutToShow<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWindow<span class="operator">::</span>updateRecentFileActions);
recentFileSubMenuAct <span class="operator">=</span> recentMenu<span class="operator">-</span><span class="operator">></span>menuAction();
<span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> MaxRecentFiles; <span class="operator">+</span><span class="operator">+</span>i) {
recentFileActs<span class="operator">[</span>i<span class="operator">]</span> <span class="operator">=</span> recentMenu<span class="operator">-</span><span class="operator">></span>addAction(<span class="type"><a href="../qtcore/qstring.html">QString</a></span>()<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWindow<span class="operator">::</span>openRecentFile);
recentFileActs<span class="operator">[</span>i<span class="operator">]</span><span class="operator">-</span><span class="operator">></span>setVisible(<span class="keyword">false</span>);
}
recentFileSeparator <span class="operator">=</span> fileMenu<span class="operator">-</span><span class="operator">></span>addSeparator();
setRecentFilesVisible(MainWindow<span class="operator">::</span>hasRecentFiles());
fileMenu<span class="operator">-</span><span class="operator">></span>addAction(tr(<span class="string">"Switch layout direction"</span>)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWindow<span class="operator">::</span>switchLayoutDirection);
fileMenu<span class="operator">-</span><span class="operator">></span>addSeparator();
<span class="keyword">const</span> <span class="type"><a href="../qtgui/qicon.html">QIcon</a></span> exitIcon <span class="operator">=</span> <span class="type"><a href="../qtgui/qicon.html">QIcon</a></span><span class="operator">::</span>fromTheme(<span class="string">"application-exit"</span>);
<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(exitIcon<span class="operator">,</span> tr(<span class="string">"E&xit"</span>)<span class="operator">,</span> <a href="qapplication.html#qApp">qApp</a><span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qapplication.html">QApplication</a></span><span class="operator">::</span>closeAllWindows);
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);
exitAct<span class="operator">-</span><span class="operator">></span>setStatusTip(tr(<span class="string">"Exit the application"</span>));
fileMenu<span class="operator">-</span><span class="operator">></span>addAction(exitAct);
<span class="preprocessor">#ifndef QT_NO_CLIPBOARD</span>
<span class="type"><a href="qmenu.html">QMenu</a></span> <span class="operator">*</span>editMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">></span>addMenu(tr(<span class="string">"&Edit"</span>));
<span class="type"><a href="qtoolbar.html">QToolBar</a></span> <span class="operator">*</span>editToolBar <span class="operator">=</span> addToolBar(tr(<span class="string">"Edit"</span>));
<span class="keyword">const</span> <span class="type"><a href="../qtgui/qicon.html">QIcon</a></span> cutIcon <span class="operator">=</span> <span class="type"><a href="../qtgui/qicon.html">QIcon</a></span><span class="operator">::</span>fromTheme(<span class="string">"edit-cut"</span><span class="operator">,</span> <span class="type"><a href="../qtgui/qicon.html">QIcon</a></span>(<span class="string">":/images/cut.png"</span>));
cutAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(cutIcon<span class="operator">,</span> tr(<span class="string">"Cu&t"</span>)<span class="operator">,</span> <span class="keyword">this</span>);
cutAct<span class="operator">-</span><span class="operator">></span>setShortcuts(<span class="type"><a href="../qtgui/qkeysequence.html">QKeySequence</a></span><span class="operator">::</span>Cut);
cutAct<span class="operator">-</span><span class="operator">></span>setStatusTip(tr(<span class="string">"Cut the current selection's contents to the "</span>
<span class="string">"clipboard"</span>));
connect(cutAct<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> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWindow<span class="operator">::</span>cut);
editMenu<span class="operator">-</span><span class="operator">></span>addAction(cutAct);
editToolBar<span class="operator">-</span><span class="operator">></span>addAction(cutAct);
<span class="keyword">const</span> <span class="type"><a href="../qtgui/qicon.html">QIcon</a></span> copyIcon <span class="operator">=</span> <span class="type"><a href="../qtgui/qicon.html">QIcon</a></span><span class="operator">::</span>fromTheme(<span class="string">"edit-copy"</span><span class="operator">,</span> <span class="type"><a href="../qtgui/qicon.html">QIcon</a></span>(<span class="string">":/images/copy.png"</span>));
copyAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(copyIcon<span class="operator">,</span> tr(<span class="string">"&Copy"</span>)<span class="operator">,</span> <span class="keyword">this</span>);
copyAct<span class="operator">-</span><span class="operator">></span>setShortcuts(<span class="type"><a href="../qtgui/qkeysequence.html">QKeySequence</a></span><span class="operator">::</span>Copy);
copyAct<span class="operator">-</span><span class="operator">></span>setStatusTip(tr(<span class="string">"Copy the current selection's contents to the "</span>
<span class="string">"clipboard"</span>));
connect(copyAct<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> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWindow<span class="operator">::</span>copy);
editMenu<span class="operator">-</span><span class="operator">></span>addAction(copyAct);
editToolBar<span class="operator">-</span><span class="operator">></span>addAction(copyAct);
<span class="keyword">const</span> <span class="type"><a href="../qtgui/qicon.html">QIcon</a></span> pasteIcon <span class="operator">=</span> <span class="type"><a href="../qtgui/qicon.html">QIcon</a></span><span class="operator">::</span>fromTheme(<span class="string">"edit-paste"</span><span class="operator">,</span> <span class="type"><a href="../qtgui/qicon.html">QIcon</a></span>(<span class="string">":/images/paste.png"</span>));
pasteAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(pasteIcon<span class="operator">,</span> tr(<span class="string">"&Paste"</span>)<span class="operator">,</span> <span class="keyword">this</span>);
pasteAct<span class="operator">-</span><span class="operator">></span>setShortcuts(<span class="type"><a href="../qtgui/qkeysequence.html">QKeySequence</a></span><span class="operator">::</span>Paste);
pasteAct<span class="operator">-</span><span class="operator">></span>setStatusTip(tr(<span class="string">"Paste the clipboard's contents into the current "</span>
<span class="string">"selection"</span>));
connect(pasteAct<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> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWindow<span class="operator">::</span>paste);
editMenu<span class="operator">-</span><span class="operator">></span>addAction(pasteAct);
editToolBar<span class="operator">-</span><span class="operator">></span>addAction(pasteAct);
<span class="preprocessor">#endif</span>
windowMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">></span>addMenu(tr(<span class="string">"&Window"</span>));
connect(windowMenu<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmenu.html">QMenu</a></span><span class="operator">::</span>aboutToShow<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWindow<span class="operator">::</span>updateWindowMenu);
closeAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">"Cl&ose"</span>)<span class="operator">,</span> <span class="keyword">this</span>);
closeAct<span class="operator">-</span><span class="operator">></span>setStatusTip(tr(<span class="string">"Close the active window"</span>));
connect(closeAct<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>
mdiArea<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmdiarea.html">QMdiArea</a></span><span class="operator">::</span>closeActiveSubWindow);
closeAllAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">"Close &All"</span>)<span class="operator">,</span> <span class="keyword">this</span>);
closeAllAct<span class="operator">-</span><span class="operator">></span>setStatusTip(tr(<span class="string">"Close all the windows"</span>));
connect(closeAllAct<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> mdiArea<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmdiarea.html">QMdiArea</a></span><span class="operator">::</span>closeAllSubWindows);
tileAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">"&Tile"</span>)<span class="operator">,</span> <span class="keyword">this</span>);
tileAct<span class="operator">-</span><span class="operator">></span>setStatusTip(tr(<span class="string">"Tile the windows"</span>));
connect(tileAct<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> mdiArea<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmdiarea.html">QMdiArea</a></span><span class="operator">::</span>tileSubWindows);
cascadeAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">"&Cascade"</span>)<span class="operator">,</span> <span class="keyword">this</span>);
cascadeAct<span class="operator">-</span><span class="operator">></span>setStatusTip(tr(<span class="string">"Cascade the windows"</span>));
connect(cascadeAct<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> mdiArea<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmdiarea.html">QMdiArea</a></span><span class="operator">::</span>cascadeSubWindows);
nextAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">"Ne&xt"</span>)<span class="operator">,</span> <span class="keyword">this</span>);
nextAct<span class="operator">-</span><span class="operator">></span>setShortcuts(<span class="type"><a href="../qtgui/qkeysequence.html">QKeySequence</a></span><span class="operator">::</span>NextChild);
nextAct<span class="operator">-</span><span class="operator">></span>setStatusTip(tr(<span class="string">"Move the focus to the next window"</span>));
connect(nextAct<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> mdiArea<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmdiarea.html">QMdiArea</a></span><span class="operator">::</span>activateNextSubWindow);
previousAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">"Pre&vious"</span>)<span class="operator">,</span> <span class="keyword">this</span>);
previousAct<span class="operator">-</span><span class="operator">></span>setShortcuts(<span class="type"><a href="../qtgui/qkeysequence.html">QKeySequence</a></span><span class="operator">::</span>PreviousChild);
previousAct<span class="operator">-</span><span class="operator">></span>setStatusTip(tr(<span class="string">"Move the focus to the previous "</span>
<span class="string">"window"</span>));
connect(previousAct<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> mdiArea<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmdiarea.html">QMdiArea</a></span><span class="operator">::</span>activatePreviousSubWindow);
windowMenuSeparatorAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(<span class="keyword">this</span>);
windowMenuSeparatorAct<span class="operator">-</span><span class="operator">></span>setSeparator(<span class="keyword">true</span>);
updateWindowMenu();
menuBar()<span class="operator">-</span><span class="operator">></span>addSeparator();
<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>));
<span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>aboutAct <span class="operator">=</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);
aboutAct<span class="operator">-</span><span class="operator">></span>setStatusTip(tr(<span class="string">"Show the application's About box"</span>));
<span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>aboutQtAct <span class="operator">=</span> helpMenu<span class="operator">-</span><span class="operator">></span>addAction(tr(<span class="string">"About &Qt"</span>)<span class="operator">,</span> <a href="qapplication.html#qApp">qApp</a><span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qapplication.html">QApplication</a></span><span class="operator">::</span>aboutQt);
aboutQtAct<span class="operator">-</span><span class="operator">></span>setStatusTip(tr(<span class="string">"Show the Qt library's About box"</span>));
}
<span class="type">void</span> MainWindow<span class="operator">::</span>createStatusBar()
{
statusBar()<span class="operator">-</span><span class="operator">></span>showMessage(tr(<span class="string">"Ready"</span>));
}
<span class="type">void</span> MainWindow<span class="operator">::</span>readSettings()
{
<span class="type"><a href="../qtcore/qsettings.html">QSettings</a></span> settings(<span class="type"><a href="../qtcore/qcoreapplication.html">QCoreApplication</a></span><span class="operator">::</span>organizationName()<span class="operator">,</span> <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/qbytearray.html">QByteArray</a></span> geometry <span class="operator">=</span> settings<span class="operator">.</span>value(<span class="string">"geometry"</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qbytearray.html">QByteArray</a></span>())<span class="operator">.</span>toByteArray();
<span class="keyword">if</span> (geometry<span class="operator">.</span>isEmpty()) {
<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>);
resize(availableGeometry<span class="operator">.</span>width() <span class="operator">/</span> <span class="number">3</span><span class="operator">,</span> availableGeometry<span class="operator">.</span>height() <span class="operator">/</span> <span class="number">2</span>);
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="keyword">else</span> {
restoreGeometry(geometry);
}
}
<span class="type">void</span> MainWindow<span class="operator">::</span>writeSettings()
{
<span class="type"><a href="../qtcore/qsettings.html">QSettings</a></span> settings(<span class="type"><a href="../qtcore/qcoreapplication.html">QCoreApplication</a></span><span class="operator">::</span>organizationName()<span class="operator">,</span> <span class="type"><a href="../qtcore/qcoreapplication.html">QCoreApplication</a></span><span class="operator">::</span>applicationName());
settings<span class="operator">.</span>setValue(<span class="string">"geometry"</span><span class="operator">,</span> saveGeometry());
}
MdiChild <span class="operator">*</span>MainWindow<span class="operator">::</span>activeMdiChild() <span class="keyword">const</span>
{
<span class="keyword">if</span> (<span class="type"><a href="qmdisubwindow.html">QMdiSubWindow</a></span> <span class="operator">*</span>activeSubWindow <span class="operator">=</span> mdiArea<span class="operator">-</span><span class="operator">></span>activeSubWindow())
<span class="keyword">return</span> qobject_cast<span class="operator"><</span>MdiChild <span class="operator">*</span><span class="operator">></span>(activeSubWindow<span class="operator">-</span><span class="operator">></span>widget());
<span class="keyword">return</span> <span class="number">0</span>;
}
<span class="type"><a href="qmdisubwindow.html">QMdiSubWindow</a></span> <span class="operator">*</span>MainWindow<span class="operator">::</span>findMdiChild(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>fileName) <span class="keyword">const</span>
{
<span class="type"><a href="../qtcore/qstring.html">QString</a></span> canonicalFilePath <span class="operator">=</span> <span class="type"><a href="../qtcore/qfileinfo.html">QFileInfo</a></span>(fileName)<span class="operator">.</span>canonicalFilePath();
foreach (<span class="type"><a href="qmdisubwindow.html">QMdiSubWindow</a></span> <span class="operator">*</span>window<span class="operator">,</span> mdiArea<span class="operator">-</span><span class="operator">></span>subWindowList()) {
MdiChild <span class="operator">*</span>mdiChild <span class="operator">=</span> qobject_cast<span class="operator"><</span>MdiChild <span class="operator">*</span><span class="operator">></span>(window<span class="operator">-</span><span class="operator">></span>widget());
<span class="keyword">if</span> (mdiChild<span class="operator">-</span><span class="operator">></span>currentFile() <span class="operator">=</span><span class="operator">=</span> canonicalFilePath)
<span class="keyword">return</span> window;
}
<span class="keyword">return</span> <span class="number">0</span>;
}
<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="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>LeftToRight)
<span class="type"><a href="../qtgui/qguiapplication.html">QGuiApplication</a></span><span class="operator">::</span>setLayoutDirection(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>RightToLeft);
<span class="keyword">else</span>
<span class="type"><a href="../qtgui/qguiapplication.html">QGuiApplication</a></span><span class="operator">::</span>setLayoutDirection(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>LeftToRight);
}
</pre>
</div>
<!-- @@@mainwindows/mdi/mainwindow.cpp -->
</div>
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<acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd.
Documentation contributions included herein are the copyrights of
their respective owners.<br/> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br/> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property
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distrib
>
Mageia
>
7
>
armv7hl
>
media
>
core-updates
>
by-pkgid
>
d5e62c01ae8d1e579463c6a871dd44bf
>
files
>
4680
