qt-everywhere-src-5.14.1/qtbase/examples/widgets/mainwindows/dockwidgets/mainwindow.cpp - orbit - Git at Google

 /****************************************************************************
 **
 ** 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."
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 //! [0]
 #include <QtWidgets>
 #if defined(QT_PRINTSUPPORT_LIB)
 #include <QtPrintSupport/qtprintsupportglobal.h>
 #if QT_CONFIG(printdialog)
 #include <QtPrintSupport>
 #endif
 #endif

 #include "mainwindow.h"
 //! [0]

 //! [1]
 MainWindow::MainWindow()
     : textEdit(new QTextEdit)
 {
     setCentralWidget(textEdit);

     createActions();
     createStatusBar();
     createDockWindows();

     setWindowTitle(tr("Dock Widgets"));

     newLetter();
     setUnifiedTitleAndToolBarOnMac(true);
 }
 //! [1]

 //! [2]
 void MainWindow::newLetter()
 {
     textEdit->clear();

     QTextCursor cursor(textEdit->textCursor());
     cursor.movePosition(QTextCursor::Start);
     QTextFrame *topFrame = cursor.currentFrame();
     QTextFrameFormat topFrameFormat = topFrame->frameFormat();
     topFrameFormat.setPadding(16);
     topFrame->setFrameFormat(topFrameFormat);

     QTextCharFormat textFormat;
     QTextCharFormat boldFormat;
     boldFormat.setFontWeight(QFont::Bold);
     QTextCharFormat italicFormat;
     italicFormat.setFontItalic(true);

     QTextTableFormat tableFormat;
     tableFormat.setBorder(1);
     tableFormat.setCellPadding(16);
     tableFormat.setAlignment(Qt::AlignRight);
     cursor.insertTable(1, 1, tableFormat);
     cursor.insertText("The Firm", boldFormat);
     cursor.insertBlock();
     cursor.insertText("321 City Street", textFormat);
     cursor.insertBlock();
     cursor.insertText("Industry Park");
     cursor.insertBlock();
     cursor.insertText("Some Country");
     cursor.setPosition(topFrame->lastPosition());
     cursor.insertText(QDate::currentDate().toString("d MMMM yyyy"), textFormat);
     cursor.insertBlock();
     cursor.insertBlock();
     cursor.insertText("Dear ", textFormat);
     cursor.insertText("NAME", italicFormat);
     cursor.insertText(",", textFormat);
     for (int i = 0; i < 3; ++i)
         cursor.insertBlock();
     cursor.insertText(tr("Yours sincerely,"), textFormat);
     for (int i = 0; i < 3; ++i)
         cursor.insertBlock();
     cursor.insertText("The Boss", textFormat);
     cursor.insertBlock();
     cursor.insertText("ADDRESS", italicFormat);
 }
 //! [2]

 //! [3]
 void MainWindow::print()
 {
 #if QT_CONFIG(printdialog)
     QTextDocument *document = textEdit->document();
     QPrinter printer;

     QPrintDialog dlg(&printer, this);
     if (dlg.exec() != QDialog::Accepted) {
         return;
     }

     document->print(&printer);
     statusBar()->showMessage(tr("Ready"), 2000);
 #endif
 }
 //! [3]

 //! [4]
 void MainWindow::save()
 {
     QMimeDatabase mimeDatabase;
     QString fileName = QFileDialog::getSaveFileName(this,
                         tr("Choose a file name"), ".",
                         mimeDatabase.mimeTypeForName("text/html").filterString());
     if (fileName.isEmpty())
         return;
     QFile file(fileName);
     if (!file.open(QFile::WriteOnly | QFile::Text)) {
         QMessageBox::warning(this, tr("Dock Widgets"),
                              tr("Cannot write file %1:\n%2.")
                              .arg(QDir::toNativeSeparators(fileName), file.errorString()));
         return;
     }

     QTextStream out(&file);
     QGuiApplication::setOverrideCursor(Qt::WaitCursor);
     out << textEdit->toHtml();
     QGuiApplication::restoreOverrideCursor();

     statusBar()->showMessage(tr("Saved '%1'").arg(fileName), 2000);
 }
 //! [4]

 //! [5]
 void MainWindow::undo()
 {
     QTextDocument *document = textEdit->document();
     document->undo();
 }
 //! [5]

 //! [6]
 void MainWindow::insertCustomer(const QString &customer)
 {
     if (customer.isEmpty())
         return;
     QStringList customerList = customer.split(", ");
     QTextDocument *document = textEdit->document();
     QTextCursor cursor = document->find("NAME");
     if (!cursor.isNull()) {
         cursor.beginEditBlock();
         cursor.insertText(customerList.at(0));
         QTextCursor oldcursor = cursor;
         cursor = document->find("ADDRESS");
         if (!cursor.isNull()) {
             for (int i = 1; i < customerList.size(); ++i) {
                 cursor.insertBlock();
                 cursor.insertText(customerList.at(i));
             }
             cursor.endEditBlock();
         }
         else
             oldcursor.endEditBlock();
     }
 }
 //! [6]

 //! [7]
 void MainWindow::addParagraph(const QString &paragraph)
 {
     if (paragraph.isEmpty())
         return;
     QTextDocument *document = textEdit->document();
     QTextCursor cursor = document->find(tr("Yours sincerely,"));
     if (cursor.isNull())
         return;
     cursor.beginEditBlock();
     cursor.movePosition(QTextCursor::PreviousBlock, QTextCursor::MoveAnchor, 2);
     cursor.insertBlock();
     cursor.insertText(paragraph);
     cursor.insertBlock();
     cursor.endEditBlock();

 }
 //! [7]

 void MainWindow::about()
 {
    QMessageBox::about(this, tr("About Dock Widgets"),
             tr("The <b>Dock Widgets</b> example demonstrates how to "
                "use Qt's dock widgets. You can enter your own text, "
                "click a customer to add a customer name and "
                "address, and click standard paragraphs to add them."));
 }

 void MainWindow::createActions()
 {
     QMenu *fileMenu = menuBar()->addMenu(tr("&File"));
     QToolBar *fileToolBar = addToolBar(tr("File"));

     const QIcon newIcon = QIcon::fromTheme("document-new", QIcon(":/images/new.png"));
     QAction *newLetterAct = new QAction(newIcon, tr("&New Letter"), this);
     newLetterAct->setShortcuts(QKeySequence::New);
     newLetterAct->setStatusTip(tr("Create a new form letter"));
     connect(newLetterAct, &QAction::triggered, this, &MainWindow::newLetter);
     fileMenu->addAction(newLetterAct);
     fileToolBar->addAction(newLetterAct);

     const QIcon saveIcon = QIcon::fromTheme("document-save", QIcon(":/images/save.png"));
     QAction *saveAct = new QAction(saveIcon, tr("&Save..."), this);
     saveAct->setShortcuts(QKeySequence::Save);
     saveAct->setStatusTip(tr("Save the current form letter"));
     connect(saveAct, &QAction::triggered, this, &MainWindow::save);
     fileMenu->addAction(saveAct);
     fileToolBar->addAction(saveAct);

     const QIcon printIcon = QIcon::fromTheme("document-print", QIcon(":/images/print.png"));
     QAction *printAct = new QAction(printIcon, tr("&Print..."), this);
     printAct->setShortcuts(QKeySequence::Print);
     printAct->setStatusTip(tr("Print the current form letter"));
     connect(printAct, &QAction::triggered, this, &MainWindow::print);
     fileMenu->addAction(printAct);
     fileToolBar->addAction(printAct);

     fileMenu->addSeparator();

     QAction *quitAct = fileMenu->addAction(tr("&Quit"), this, &QWidget::close);
     quitAct->setShortcuts(QKeySequence::Quit);
     quitAct->setStatusTip(tr("Quit the application"));

     QMenu *editMenu = menuBar()->addMenu(tr("&Edit"));
     QToolBar *editToolBar = addToolBar(tr("Edit"));
     const QIcon undoIcon = QIcon::fromTheme("edit-undo", QIcon(":/images/undo.png"));
     QAction *undoAct = new QAction(undoIcon, tr("&Undo"), this);
     undoAct->setShortcuts(QKeySequence::Undo);
     undoAct->setStatusTip(tr("Undo the last editing action"));
     connect(undoAct, &QAction::triggered, this, &MainWindow::undo);
     editMenu->addAction(undoAct);
     editToolBar->addAction(undoAct);

     viewMenu = menuBar()->addMenu(tr("&View"));

     menuBar()->addSeparator();

     QMenu *helpMenu = menuBar()->addMenu(tr("&Help"));

     QAction *aboutAct = helpMenu->addAction(tr("&About"), this, &MainWindow::about);
     aboutAct->setStatusTip(tr("Show the application's About box"));

     QAction *aboutQtAct = helpMenu->addAction(tr("About &Qt"), qApp, &QApplication::aboutQt);
     aboutQtAct->setStatusTip(tr("Show the Qt library's About box"));
 }

 //! [8]
 void MainWindow::createStatusBar()
 {
     statusBar()->showMessage(tr("Ready"));
 }
 //! [8]

 //! [9]
 void MainWindow::createDockWindows()
 {
     QDockWidget *dock = new QDockWidget(tr("Customers"), this);
     dock->setAllowedAreas(Qt::LeftDockWidgetArea | Qt::RightDockWidgetArea);
     customerList = new QListWidget(dock);
     customerList->addItems(QStringList()
             << "John Doe, Harmony Enterprises, 12 Lakeside, Ambleton"
             << "Jane Doe, Memorabilia, 23 Watersedge, Beaton"
             << "Tammy Shea, Tiblanka, 38 Sea Views, Carlton"
             << "Tim Sheen, Caraba Gifts, 48 Ocean Way, Deal"
             << "Sol Harvey, Chicos Coffee, 53 New Springs, Eccleston"
             << "Sally Hobart, Tiroli Tea, 67 Long River, Fedula");
     dock->setWidget(customerList);
     addDockWidget(Qt::RightDockWidgetArea, dock);
     viewMenu->addAction(dock->toggleViewAction());

     dock = new QDockWidget(tr("Paragraphs"), this);
     paragraphsList = new QListWidget(dock);
     paragraphsList->addItems(QStringList()
             << "Thank you for your payment which we have received today."
             << "Your order has been dispatched and should be with you "
                "within 28 days."
             << "We have dispatched those items that were in stock. The "
                "rest of your order will be dispatched once all the "
                "remaining items have arrived at our warehouse. No "
                "additional shipping charges will be made."
             << "You made a small overpayment (less than $5) which we "
                "will keep on account for you, or return at your request."
             << "You made a small underpayment (less than $1), but we have "
                "sent your order anyway. We'll add this underpayment to "
                "your next bill."
             << "Unfortunately you did not send enough money. Please remit "
                "an additional $. Your order will be dispatched as soon as "
                "the complete amount has been received."
             << "You made an overpayment (more than $5). Do you wish to "
                "buy more items, or should we return the excess to you?");
     dock->setWidget(paragraphsList);
     addDockWidget(Qt::RightDockWidgetArea, dock);
     viewMenu->addAction(dock->toggleViewAction());

     connect(customerList, &QListWidget::currentTextChanged,
             this, &MainWindow::insertCustomer);
     connect(paragraphsList, &QListWidget::currentTextChanged,
             this, &MainWindow::addParagraph);
 }
 //! [9]
	/****************************************************************************
	**
	** 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."
	**
	** $QT_END_LICENSE$
	**
	****************************************************************************/

	//! [0]
	#include <QtWidgets>
	#if defined(QT_PRINTSUPPORT_LIB)
	#include <QtPrintSupport/qtprintsupportglobal.h>
	#if QT_CONFIG(printdialog)
	#include <QtPrintSupport>
	#endif
	#endif

	#include "mainwindow.h"
	//! [0]

	//! [1]
	MainWindow::MainWindow()
	: textEdit(new QTextEdit)
	{
	setCentralWidget(textEdit);

	createActions();
	createStatusBar();
	createDockWindows();

	setWindowTitle(tr("Dock Widgets"));

	newLetter();
	setUnifiedTitleAndToolBarOnMac(true);
	}
	//! [1]

	//! [2]
	void MainWindow::newLetter()
	{
	textEdit->clear();

	QTextCursor cursor(textEdit->textCursor());
	cursor.movePosition(QTextCursor::Start);
	QTextFrame *topFrame = cursor.currentFrame();
	QTextFrameFormat topFrameFormat = topFrame->frameFormat();
	topFrameFormat.setPadding(16);
	topFrame->setFrameFormat(topFrameFormat);

	QTextCharFormat textFormat;
	QTextCharFormat boldFormat;
	boldFormat.setFontWeight(QFont::Bold);
	QTextCharFormat italicFormat;
	italicFormat.setFontItalic(true);

	QTextTableFormat tableFormat;
	tableFormat.setBorder(1);
	tableFormat.setCellPadding(16);
	tableFormat.setAlignment(Qt::AlignRight);
	cursor.insertTable(1, 1, tableFormat);
	cursor.insertText("The Firm", boldFormat);
	cursor.insertBlock();
	cursor.insertText("321 City Street", textFormat);
	cursor.insertBlock();
	cursor.insertText("Industry Park");
	cursor.insertBlock();
	cursor.insertText("Some Country");
	cursor.setPosition(topFrame->lastPosition());
	cursor.insertText(QDate::currentDate().toString("d MMMM yyyy"), textFormat);
	cursor.insertBlock();
	cursor.insertBlock();
	cursor.insertText("Dear ", textFormat);
	cursor.insertText("NAME", italicFormat);
	cursor.insertText(",", textFormat);
	for (int i = 0; i < 3; ++i)
	cursor.insertBlock();
	cursor.insertText(tr("Yours sincerely,"), textFormat);
	for (int i = 0; i < 3; ++i)
	cursor.insertBlock();
	cursor.insertText("The Boss", textFormat);
	cursor.insertBlock();
	cursor.insertText("ADDRESS", italicFormat);
	}
	//! [2]

	//! [3]
	void MainWindow::print()
	{
	#if QT_CONFIG(printdialog)
	QTextDocument *document = textEdit->document();
	QPrinter printer;

	QPrintDialog dlg(&printer, this);
	if (dlg.exec() != QDialog::Accepted) {
	return;
	}

	document->print(&printer);
	statusBar()->showMessage(tr("Ready"), 2000);
	#endif
	}
	//! [3]

	//! [4]
	void MainWindow::save()
	{
	QMimeDatabase mimeDatabase;
	QString fileName = QFileDialog::getSaveFileName(this,
	tr("Choose a file name"), ".",
	mimeDatabase.mimeTypeForName("text/html").filterString());
	if (fileName.isEmpty())
	return;
	QFile file(fileName);
	if (!file.open(QFile::WriteOnly \| QFile::Text)) {
	QMessageBox::warning(this, tr("Dock Widgets"),
	tr("Cannot write file %1:\n%2.")
	.arg(QDir::toNativeSeparators(fileName), file.errorString()));
	return;
	}

	QTextStream out(&file);
	QGuiApplication::setOverrideCursor(Qt::WaitCursor);
	out << textEdit->toHtml();
	QGuiApplication::restoreOverrideCursor();

	statusBar()->showMessage(tr("Saved '%1'").arg(fileName), 2000);
	}
	//! [4]

	//! [5]
	void MainWindow::undo()
	{
	QTextDocument *document = textEdit->document();
	document->undo();
	}
	//! [5]

	//! [6]
	void MainWindow::insertCustomer(const QString &customer)
	{
	if (customer.isEmpty())
	return;
	QStringList customerList = customer.split(", ");
	QTextDocument *document = textEdit->document();
	QTextCursor cursor = document->find("NAME");
	if (!cursor.isNull()) {
	cursor.beginEditBlock();
	cursor.insertText(customerList.at(0));
	QTextCursor oldcursor = cursor;
	cursor = document->find("ADDRESS");
	if (!cursor.isNull()) {
	for (int i = 1; i < customerList.size(); ++i) {
	cursor.insertBlock();
	cursor.insertText(customerList.at(i));
	}
	cursor.endEditBlock();
	}
	else
	oldcursor.endEditBlock();
	}
	}
	//! [6]

	//! [7]
	void MainWindow::addParagraph(const QString &paragraph)
	{
	if (paragraph.isEmpty())
	return;
	QTextDocument *document = textEdit->document();
	QTextCursor cursor = document->find(tr("Yours sincerely,"));
	if (cursor.isNull())
	return;
	cursor.beginEditBlock();
	cursor.movePosition(QTextCursor::PreviousBlock, QTextCursor::MoveAnchor, 2);
	cursor.insertBlock();
	cursor.insertText(paragraph);
	cursor.insertBlock();
	cursor.endEditBlock();

	}
	//! [7]

	void MainWindow::about()
	{
	QMessageBox::about(this, tr("About Dock Widgets"),
	tr("The <b>Dock Widgets</b> example demonstrates how to "
	"use Qt's dock widgets. You can enter your own text, "
	"click a customer to add a customer name and "
	"address, and click standard paragraphs to add them."));
	}

	void MainWindow::createActions()
	{
	QMenu *fileMenu = menuBar()->addMenu(tr("&File"));
	QToolBar *fileToolBar = addToolBar(tr("File"));

	const QIcon newIcon = QIcon::fromTheme("document-new", QIcon(":/images/new.png"));
	QAction *newLetterAct = new QAction(newIcon, tr("&New Letter"), this);
	newLetterAct->setShortcuts(QKeySequence::New);
	newLetterAct->setStatusTip(tr("Create a new form letter"));
	connect(newLetterAct, &QAction::triggered, this, &MainWindow::newLetter);
	fileMenu->addAction(newLetterAct);
	fileToolBar->addAction(newLetterAct);

	const QIcon saveIcon = QIcon::fromTheme("document-save", QIcon(":/images/save.png"));
	QAction *saveAct = new QAction(saveIcon, tr("&Save..."), this);
	saveAct->setShortcuts(QKeySequence::Save);
	saveAct->setStatusTip(tr("Save the current form letter"));
	connect(saveAct, &QAction::triggered, this, &MainWindow::save);
	fileMenu->addAction(saveAct);
	fileToolBar->addAction(saveAct);

	const QIcon printIcon = QIcon::fromTheme("document-print", QIcon(":/images/print.png"));
	QAction *printAct = new QAction(printIcon, tr("&Print..."), this);
	printAct->setShortcuts(QKeySequence::Print);
	printAct->setStatusTip(tr("Print the current form letter"));
	connect(printAct, &QAction::triggered, this, &MainWindow::print);
	fileMenu->addAction(printAct);
	fileToolBar->addAction(printAct);

	fileMenu->addSeparator();

	QAction *quitAct = fileMenu->addAction(tr("&Quit"), this, &QWidget::close);
	quitAct->setShortcuts(QKeySequence::Quit);
	quitAct->setStatusTip(tr("Quit the application"));

	QMenu *editMenu = menuBar()->addMenu(tr("&Edit"));
	QToolBar *editToolBar = addToolBar(tr("Edit"));
	const QIcon undoIcon = QIcon::fromTheme("edit-undo", QIcon(":/images/undo.png"));
	QAction *undoAct = new QAction(undoIcon, tr("&Undo"), this);
	undoAct->setShortcuts(QKeySequence::Undo);
	undoAct->setStatusTip(tr("Undo the last editing action"));
	connect(undoAct, &QAction::triggered, this, &MainWindow::undo);
	editMenu->addAction(undoAct);
	editToolBar->addAction(undoAct);

	viewMenu = menuBar()->addMenu(tr("&View"));

	menuBar()->addSeparator();

	QMenu *helpMenu = menuBar()->addMenu(tr("&Help"));

	QAction *aboutAct = helpMenu->addAction(tr("&About"), this, &MainWindow::about);
	aboutAct->setStatusTip(tr("Show the application's About box"));

	QAction *aboutQtAct = helpMenu->addAction(tr("About &Qt"), qApp, &QApplication::aboutQt);
	aboutQtAct->setStatusTip(tr("Show the Qt library's About box"));
	}

	//! [8]
	void MainWindow::createStatusBar()
	{
	statusBar()->showMessage(tr("Ready"));
	}
	//! [8]

	//! [9]
	void MainWindow::createDockWindows()
	{
	QDockWidget *dock = new QDockWidget(tr("Customers"), this);
	dock->setAllowedAreas(Qt::LeftDockWidgetArea \| Qt::RightDockWidgetArea);
	customerList = new QListWidget(dock);
	customerList->addItems(QStringList()
	<< "John Doe, Harmony Enterprises, 12 Lakeside, Ambleton"
	<< "Jane Doe, Memorabilia, 23 Watersedge, Beaton"
	<< "Tammy Shea, Tiblanka, 38 Sea Views, Carlton"
	<< "Tim Sheen, Caraba Gifts, 48 Ocean Way, Deal"
	<< "Sol Harvey, Chicos Coffee, 53 New Springs, Eccleston"
	<< "Sally Hobart, Tiroli Tea, 67 Long River, Fedula");
	dock->setWidget(customerList);
	addDockWidget(Qt::RightDockWidgetArea, dock);
	viewMenu->addAction(dock->toggleViewAction());

	dock = new QDockWidget(tr("Paragraphs"), this);
	paragraphsList = new QListWidget(dock);
	paragraphsList->addItems(QStringList()
	<< "Thank you for your payment which we have received today."
	<< "Your order has been dispatched and should be with you "
	"within 28 days."
	<< "We have dispatched those items that were in stock. The "
	"rest of your order will be dispatched once all the "
	"remaining items have arrived at our warehouse. No "
	"additional shipping charges will be made."
	<< "You made a small overpayment (less than $5) which we "
	"will keep on account for you, or return at your request."
	<< "You made a small underpayment (less than $1), but we have "
	"sent your order anyway. We'll add this underpayment to "
	"your next bill."
	<< "Unfortunately you did not send enough money. Please remit "
	"an additional $. Your order will be dispatched as soon as "
	"the complete amount has been received."
	<< "You made an overpayment (more than $5). Do you wish to "
	"buy more items, or should we return the excess to you?");
	dock->setWidget(paragraphsList);
	addDockWidget(Qt::RightDockWidgetArea, dock);
	viewMenu->addAction(dock->toggleViewAction());

	connect(customerList, &QListWidget::currentTextChanged,
	this, &MainWindow::insertCustomer);
	connect(paragraphsList, &QListWidget::currentTextChanged,
	this, &MainWindow::addParagraph);
	}
	//! [9]