Move MDI example to manual test

Pick-to: 6.5 6.6
Change-Id: Ide698a171a4600cb4bac6574b6be74c17f779051
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>

14 files changed, 0 insertions, 843 deletions

diff --git a/examples/widgets/mainwindows/mdi/CMakeLists.txt b/examples/widgets/mainwindows/mdi/CMakeLists.txt
deleted file mode 100644
index 0af9873284..0000000000
--- a/examples/widgets/mainwindows/mdi/CMakeLists.txt
+++ /dev/null
@@ -1,55 +0,0 @@
-# Copyright (C) 2022 The Qt Company Ltd.
-# SPDX-License-Identifier: BSD-3-Clause
-
-cmake_minimum_required(VERSION 3.16)
-project(mdi LANGUAGES CXX)
-
-if(NOT DEFINED INSTALL_EXAMPLESDIR)
-    set(INSTALL_EXAMPLESDIR "examples")
-endif()
-
-set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/widgets/mainwindows/mdi")
-
-find_package(Qt6 REQUIRED COMPONENTS Core Gui Widgets)
-
-qt_standard_project_setup()
-
-qt_add_executable(mdi
-    main.cpp
-    mainwindow.cpp mainwindow.h
-    mdichild.cpp mdichild.h
-)
-
-set_target_properties(mdi PROPERTIES
-    WIN32_EXECUTABLE TRUE
-    MACOSX_BUNDLE TRUE
-)
-
-target_link_libraries(mdi PRIVATE
-    Qt6::Core
-    Qt6::Gui
-    Qt6::Widgets
-)
-
-# Resources:
-set(mdi_resource_files
-    "images/copy.png"
-    "images/cut.png"
-    "images/new.png"
-    "images/open.png"
-    "images/paste.png"
-    "images/save.png"
-)
-
-qt_add_resources(mdi "mdi"
-    PREFIX
-        "/"
-    FILES
-        ${mdi_resource_files}
-)
-
-install(TARGETS mdi
-    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
-    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
-    LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
-)
diff --git a/examples/widgets/mainwindows/mdi/images/copy.png b/examples/widgets/mainwindows/mdi/images/copy.png
deleted file mode 100644
index 2aeb28288f..0000000000
--- a/examples/widgets/mainwindows/mdi/images/copy.png
+++ /dev/null
diff --git a/examples/widgets/mainwindows/mdi/images/cut.png b/examples/widgets/mainwindows/mdi/images/cut.png
deleted file mode 100644
index 54638e9386..0000000000
--- a/examples/widgets/mainwindows/mdi/images/cut.png
+++ /dev/null
diff --git a/examples/widgets/mainwindows/mdi/images/new.png b/examples/widgets/mainwindows/mdi/images/new.png
deleted file mode 100644
index 12131b0100..0000000000
--- a/examples/widgets/mainwindows/mdi/images/new.png
+++ /dev/null
diff --git a/examples/widgets/mainwindows/mdi/images/open.png b/examples/widgets/mainwindows/mdi/images/open.png
deleted file mode 100644
index 45fa2883a7..0000000000
--- a/examples/widgets/mainwindows/mdi/images/open.png
+++ /dev/null
diff --git a/examples/widgets/mainwindows/mdi/images/paste.png b/examples/widgets/mainwindows/mdi/images/paste.png
deleted file mode 100644
index c14425cad1..0000000000
--- a/examples/widgets/mainwindows/mdi/images/paste.png
+++ /dev/null
diff --git a/examples/widgets/mainwindows/mdi/images/save.png b/examples/widgets/mainwindows/mdi/images/save.png
deleted file mode 100644
index e65a29d5f1..0000000000
--- a/examples/widgets/mainwindows/mdi/images/save.png
+++ /dev/null
diff --git a/examples/widgets/mainwindows/mdi/main.cpp b/examples/widgets/mainwindows/mdi/main.cpp
deleted file mode 100644
index ee70050544..0000000000
--- a/examples/widgets/mainwindows/mdi/main.cpp
+++ /dev/null
@@ -1,29 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#include <QApplication>
-#include <QCommandLineParser>
-#include <QCommandLineOption>
-
-#include "mainwindow.h"
-
-int main(int argc, char *argv[])
-{
-    QApplication app(argc, argv);
-    QCoreApplication::setApplicationName("MDI Example");
-    QCoreApplication::setOrganizationName("QtProject");
-    QCoreApplication::setApplicationVersion(QT_VERSION_STR);
-    QCommandLineParser parser;
-    parser.setApplicationDescription("Qt MDI Example");
-    parser.addHelpOption();
-    parser.addVersionOption();
-    parser.addPositionalArgument("file", "The file to open.");
-    parser.process(app);
-
-    MainWindow mainWin;
-    const QStringList posArgs = parser.positionalArguments();
-    for (const QString &fileName : posArgs)
-        mainWin.openFile(fileName);
-    mainWin.show();
-    return app.exec();
-}
diff --git a/examples/widgets/mainwindows/mdi/mainwindow.cpp b/examples/widgets/mainwindows/mdi/mainwindow.cpp
deleted file mode 100644
index 89998f3160..0000000000
--- a/examples/widgets/mainwindows/mdi/mainwindow.cpp
+++ /dev/null
@@ -1,463 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#include <QtWidgets>
-
-#include "mainwindow.h"
-#include "mdichild.h"
-
-MainWindow::MainWindow()
-    : mdiArea(new QMdiArea)
-{
-    mdiArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
-    mdiArea->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
-    setCentralWidget(mdiArea);
-    connect(mdiArea, &QMdiArea::subWindowActivated,
-            this, &MainWindow::updateMenus);
-
-    createActions();
-    createStatusBar();
-    updateMenus();
-
-    readSettings();
-
-    setWindowTitle(tr("MDI"));
-    setUnifiedTitleAndToolBarOnMac(true);
-}
-
-void MainWindow::closeEvent(QCloseEvent *event)
-{
-    mdiArea->closeAllSubWindows();
-    if (mdiArea->currentSubWindow()) {
-        event->ignore();
-    } else {
-        writeSettings();
-        event->accept();
-    }
-}
-
-void MainWindow::newFile()
-{
-    MdiChild *child = createMdiChild();
-    child->newFile();
-    child->show();
-}
-
-void MainWindow::open()
-{
-    const QString fileName = QFileDialog::getOpenFileName(this);
-    if (!fileName.isEmpty())
-        openFile(fileName);
-}
-
-bool MainWindow::openFile(const QString &fileName)
-{
-    if (QMdiSubWindow *existing = findMdiChild(fileName)) {
-        mdiArea->setActiveSubWindow(existing);
-        return true;
-    }
-    const bool succeeded = loadFile(fileName);
-    if (succeeded)
-        statusBar()->showMessage(tr("File loaded"), 2000);
-    return succeeded;
-}
-
-bool MainWindow::loadFile(const QString &fileName)
-{
-    MdiChild *child = createMdiChild();
-    const bool succeeded = child->loadFile(fileName);
-    if (succeeded)
-        child->show();
-    else
-        child->close();
-    MainWindow::prependToRecentFiles(fileName);
-    return succeeded;
-}
-
-static inline QString recentFilesKey() { return QStringLiteral("recentFileList"); }
-static inline QString fileKey() { return QStringLiteral("file"); }
-
-static QStringList readRecentFiles(QSettings &settings)
-{
-    QStringList result;
-    const int count = settings.beginReadArray(recentFilesKey());
-    for (int i = 0; i < count; ++i) {
-        settings.setArrayIndex(i);
-        result.append(settings.value(fileKey()).toString());
-    }
-    settings.endArray();
-    return result;
-}
-
-static void writeRecentFiles(const QStringList &files, QSettings &settings)
-{
-    const int count = files.size();
-    settings.beginWriteArray(recentFilesKey());
-    for (int i = 0; i < count; ++i) {
-        settings.setArrayIndex(i);
-        settings.setValue(fileKey(), files.at(i));
-    }
-    settings.endArray();
-}
-
-bool MainWindow::hasRecentFiles()
-{
-    QSettings settings(QCoreApplication::organizationName(), QCoreApplication::applicationName());
-    const int count = settings.beginReadArray(recentFilesKey());
-    settings.endArray();
-    return count > 0;
-}
-
-void MainWindow::prependToRecentFiles(const QString &fileName)
-{
-    QSettings settings(QCoreApplication::organizationName(), QCoreApplication::applicationName());
-
-    const QStringList oldRecentFiles = readRecentFiles(settings);
-    QStringList recentFiles = oldRecentFiles;
-    recentFiles.removeAll(fileName);
-    recentFiles.prepend(fileName);
-    if (oldRecentFiles != recentFiles)
-        writeRecentFiles(recentFiles, settings);
-
-    setRecentFilesVisible(!recentFiles.isEmpty());
-}
-
-void MainWindow::setRecentFilesVisible(bool visible)
-{
-    recentFileSubMenuAct->setVisible(visible);
-    recentFileSeparator->setVisible(visible);
-}
-
-void MainWindow::updateRecentFileActions()
-{
-    QSettings settings(QCoreApplication::organizationName(), QCoreApplication::applicationName());
-
-    const QStringList recentFiles = readRecentFiles(settings);
-    const int count = qMin(int(MaxRecentFiles), recentFiles.size());
-    int i = 0;
-    for ( ; i < count; ++i) {
-        const QString fileName = QFileInfo(recentFiles.at(i)).fileName();
-        recentFileActs[i]->setText(tr("&%1 %2").arg(i + 1).arg(fileName));
-        recentFileActs[i]->setData(recentFiles.at(i));
-        recentFileActs[i]->setVisible(true);
-    }
-    for ( ; i < MaxRecentFiles; ++i)
-        recentFileActs[i]->setVisible(false);
-}
-
-void MainWindow::openRecentFile()
-{
-    if (const QAction *action = qobject_cast<const QAction *>(sender()))
-        openFile(action->data().toString());
-}
-
-void MainWindow::save()
-{
-    if (activeMdiChild() && activeMdiChild()->save())
-        statusBar()->showMessage(tr("File saved"), 2000);
-}
-
-void MainWindow::saveAs()
-{
-    MdiChild *child = activeMdiChild();
-    if (child && child->saveAs()) {
-        statusBar()->showMessage(tr("File saved"), 2000);
-        MainWindow::prependToRecentFiles(child->currentFile());
-    }
-}
-
-#ifndef QT_NO_CLIPBOARD
-void MainWindow::cut()
-{
-    if (activeMdiChild())
-        activeMdiChild()->cut();
-}
-
-void MainWindow::copy()
-{
-    if (activeMdiChild())
-        activeMdiChild()->copy();
-}
-
-void MainWindow::paste()
-{
-    if (activeMdiChild())
-        activeMdiChild()->paste();
-}
-#endif
-
-void MainWindow::about()
-{
-   QMessageBox::about(this, tr("About MDI"),
-            tr("The <b>MDI</b> example demonstrates how to write multiple "
-               "document interface applications using Qt."));
-}
-
-void MainWindow::updateMenus()
-{
-    bool hasMdiChild = (activeMdiChild() != nullptr);
-    saveAct->setEnabled(hasMdiChild);
-    saveAsAct->setEnabled(hasMdiChild);
-#ifndef QT_NO_CLIPBOARD
-    pasteAct->setEnabled(hasMdiChild);
-#endif
-    closeAct->setEnabled(hasMdiChild);
-    closeAllAct->setEnabled(hasMdiChild);
-    tileAct->setEnabled(hasMdiChild);
-    cascadeAct->setEnabled(hasMdiChild);
-    nextAct->setEnabled(hasMdiChild);
-    previousAct->setEnabled(hasMdiChild);
-    windowMenuSeparatorAct->setVisible(hasMdiChild);
-
-#ifndef QT_NO_CLIPBOARD
-    bool hasSelection = (activeMdiChild() &&
-                         activeMdiChild()->textCursor().hasSelection());
-    cutAct->setEnabled(hasSelection);
-    copyAct->setEnabled(hasSelection);
-#endif
-}
-
-void MainWindow::updateWindowMenu()
-{
-    windowMenu->clear();
-    windowMenu->addAction(closeAct);
-    windowMenu->addAction(closeAllAct);
-    windowMenu->addSeparator();
-    windowMenu->addAction(tileAct);
-    windowMenu->addAction(cascadeAct);
-    windowMenu->addSeparator();
-    windowMenu->addAction(nextAct);
-    windowMenu->addAction(previousAct);
-    windowMenu->addAction(windowMenuSeparatorAct);
-
-    QList<QMdiSubWindow *> windows = mdiArea->subWindowList();
-    windowMenuSeparatorAct->setVisible(!windows.isEmpty());
-
-    for (int i = 0; i < windows.size(); ++i) {
-        QMdiSubWindow *mdiSubWindow = windows.at(i);
-        MdiChild *child = qobject_cast<MdiChild *>(mdiSubWindow->widget());
-
-        QString text;
-        if (i < 9) {
-            text = tr("&%1 %2").arg(i + 1)
-                               .arg(child->userFriendlyCurrentFile());
-        } else {
-            text = tr("%1 %2").arg(i + 1)
-                              .arg(child->userFriendlyCurrentFile());
-        }
-        QAction *action = windowMenu->addAction(text, mdiSubWindow, [this, mdiSubWindow]() {
-            mdiArea->setActiveSubWindow(mdiSubWindow);
-        });
-        action->setCheckable(true);
-        action ->setChecked(child == activeMdiChild());
-    }
-}
-
-MdiChild *MainWindow::createMdiChild()
-{
-    MdiChild *child = new MdiChild;
-    mdiArea->addSubWindow(child);
-
-#ifndef QT_NO_CLIPBOARD
-    connect(child, &QTextEdit::copyAvailable, cutAct, &QAction::setEnabled);
-    connect(child, &QTextEdit::copyAvailable, copyAct, &QAction::setEnabled);
-#endif
-
-    return child;
-}
-
-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"));
-    newAct = new QAction(newIcon, tr("&New"), this);
-    newAct->setShortcuts(QKeySequence::New);
-    newAct->setStatusTip(tr("Create a new file"));
-    connect(newAct, &QAction::triggered, this, &MainWindow::newFile);
-    fileMenu->addAction(newAct);
-    fileToolBar->addAction(newAct);
-
-//! [qaction setup]
-    const QIcon openIcon = QIcon::fromTheme("document-open", QIcon(":/images/open.png"));
-    QAction *openAct = new QAction(openIcon, tr("&Open..."), this);
-    openAct->setShortcuts(QKeySequence::Open);
-    openAct->setStatusTip(tr("Open an existing file"));
-    connect(openAct, &QAction::triggered, this, &MainWindow::open);
-    fileMenu->addAction(openAct);
-    fileToolBar->addAction(openAct);
-//! [qaction setup]
-
-    const QIcon saveIcon = QIcon::fromTheme("document-save", QIcon(":/images/save.png"));
-    saveAct = new QAction(saveIcon, tr("&Save"), this);
-    saveAct->setShortcuts(QKeySequence::Save);
-    saveAct->setStatusTip(tr("Save the document to disk"));
-    connect(saveAct, &QAction::triggered, this, &MainWindow::save);
-    fileToolBar->addAction(saveAct);
-
-    const QIcon saveAsIcon = QIcon::fromTheme("document-save-as");
-    saveAsAct = new QAction(saveAsIcon, tr("Save &As..."), this);
-    saveAsAct->setShortcuts(QKeySequence::SaveAs);
-    saveAsAct->setStatusTip(tr("Save the document under a new name"));
-    connect(saveAsAct, &QAction::triggered, this, &MainWindow::saveAs);
-    fileMenu->addAction(saveAsAct);
-
-    fileMenu->addSeparator();
-
-    QMenu *recentMenu = fileMenu->addMenu(tr("Recent..."));
-    connect(recentMenu, &QMenu::aboutToShow, this, &MainWindow::updateRecentFileActions);
-    recentFileSubMenuAct = recentMenu->menuAction();
-
-    for (int i = 0; i < MaxRecentFiles; ++i) {
-        recentFileActs[i] = recentMenu->addAction(QString(), this, &MainWindow::openRecentFile);
-        recentFileActs[i]->setVisible(false);
-    }
-
-    recentFileSeparator = fileMenu->addSeparator();
-
-    setRecentFilesVisible(MainWindow::hasRecentFiles());
-
-    fileMenu->addAction(tr("Switch layout direction"), this, &MainWindow::switchLayoutDirection);
-
-    fileMenu->addSeparator();
-
-//! [0]
-    const QIcon exitIcon = QIcon::fromTheme("application-exit");
-    QAction *exitAct = fileMenu->addAction(exitIcon, tr("E&xit"), qApp, &QApplication::quit);
-    exitAct->setShortcuts(QKeySequence::Quit);
-    exitAct->setStatusTip(tr("Exit the application"));
-    fileMenu->addAction(exitAct);
-//! [0]
-
-#ifndef QT_NO_CLIPBOARD
-    QMenu *editMenu = menuBar()->addMenu(tr("&Edit"));
-    QToolBar *editToolBar = addToolBar(tr("Edit"));
-
-    const QIcon cutIcon = QIcon::fromTheme("edit-cut", QIcon(":/images/cut.png"));
-    cutAct = new QAction(cutIcon, tr("Cu&t"), this);
-    cutAct->setShortcuts(QKeySequence::Cut);
-    cutAct->setStatusTip(tr("Cut the current selection's contents to the "
-                            "clipboard"));
-    connect(cutAct, &QAction::triggered, this, &MainWindow::cut);
-    editMenu->addAction(cutAct);
-    editToolBar->addAction(cutAct);
-
-    const QIcon copyIcon = QIcon::fromTheme("edit-copy", QIcon(":/images/copy.png"));
-    copyAct = new QAction(copyIcon, tr("&Copy"), this);
-    copyAct->setShortcuts(QKeySequence::Copy);
-    copyAct->setStatusTip(tr("Copy the current selection's contents to the "
-                             "clipboard"));
-    connect(copyAct, &QAction::triggered, this, &MainWindow::copy);
-    editMenu->addAction(copyAct);
-    editToolBar->addAction(copyAct);
-
-    const QIcon pasteIcon = QIcon::fromTheme("edit-paste", QIcon(":/images/paste.png"));
-    pasteAct = new QAction(pasteIcon, tr("&Paste"), this);
-    pasteAct->setShortcuts(QKeySequence::Paste);
-    pasteAct->setStatusTip(tr("Paste the clipboard's contents into the current "
-                              "selection"));
-    connect(pasteAct, &QAction::triggered, this, &MainWindow::paste);
-    editMenu->addAction(pasteAct);
-    editToolBar->addAction(pasteAct);
-#endif
-
-    windowMenu = menuBar()->addMenu(tr("&Window"));
-    connect(windowMenu, &QMenu::aboutToShow, this, &MainWindow::updateWindowMenu);
-
-    closeAct = new QAction(tr("Cl&ose"), this);
-    closeAct->setStatusTip(tr("Close the active window"));
-    connect(closeAct, &QAction::triggered,
-            mdiArea, &QMdiArea::closeActiveSubWindow);
-
-    closeAllAct = new QAction(tr("Close &All"), this);
-    closeAllAct->setStatusTip(tr("Close all the windows"));
-    connect(closeAllAct, &QAction::triggered, mdiArea, &QMdiArea::closeAllSubWindows);
-
-    tileAct = new QAction(tr("&Tile"), this);
-    tileAct->setStatusTip(tr("Tile the windows"));
-    connect(tileAct, &QAction::triggered, mdiArea, &QMdiArea::tileSubWindows);
-
-    cascadeAct = new QAction(tr("&Cascade"), this);
-    cascadeAct->setStatusTip(tr("Cascade the windows"));
-    connect(cascadeAct, &QAction::triggered, mdiArea, &QMdiArea::cascadeSubWindows);
-
-    nextAct = new QAction(tr("Ne&xt"), this);
-    nextAct->setShortcuts(QKeySequence::NextChild);
-    nextAct->setStatusTip(tr("Move the focus to the next window"));
-    connect(nextAct, &QAction::triggered, mdiArea, &QMdiArea::activateNextSubWindow);
-
-    previousAct = new QAction(tr("Pre&vious"), this);
-    previousAct->setShortcuts(QKeySequence::PreviousChild);
-    previousAct->setStatusTip(tr("Move the focus to the previous "
-                                 "window"));
-    connect(previousAct, &QAction::triggered, mdiArea, &QMdiArea::activatePreviousSubWindow);
-
-    windowMenuSeparatorAct = new QAction(this);
-    windowMenuSeparatorAct->setSeparator(true);
-
-    updateWindowMenu();
-
-    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"));
-}
-
-void MainWindow::createStatusBar()
-{
-    statusBar()->showMessage(tr("Ready"));
-}
-
-void MainWindow::readSettings()
-{
-    QSettings settings(QCoreApplication::organizationName(), QCoreApplication::applicationName());
-    const QByteArray geometry = settings.value("geometry", QByteArray()).toByteArray();
-    if (geometry.isEmpty()) {
-        const QRect availableGeometry = screen()->availableGeometry();
-        resize(availableGeometry.width() / 3, availableGeometry.height() / 2);
-        move((availableGeometry.width() - width()) / 2,
-             (availableGeometry.height() - height()) / 2);
-    } else {
-        restoreGeometry(geometry);
-    }
-}
-
-void MainWindow::writeSettings()
-{
-    QSettings settings(QCoreApplication::organizationName(), QCoreApplication::applicationName());
-    settings.setValue("geometry", saveGeometry());
-}
-
-MdiChild *MainWindow::activeMdiChild() const
-{
-    if (QMdiSubWindow *activeSubWindow = mdiArea->activeSubWindow())
-        return qobject_cast<MdiChild *>(activeSubWindow->widget());
-    return nullptr;
-}
-
-QMdiSubWindow *MainWindow::findMdiChild(const QString &fileName) const
-{
-    QString canonicalFilePath = QFileInfo(fileName).canonicalFilePath();
-
-    const QList<QMdiSubWindow *> subWindows = mdiArea->subWindowList();
-    for (QMdiSubWindow *window : subWindows) {
-        MdiChild *mdiChild = qobject_cast<MdiChild *>(window->widget());
-        if (mdiChild->currentFile() == canonicalFilePath)
-            return window;
-    }
-    return nullptr;
-}
-
-void MainWindow::switchLayoutDirection()
-{
-    if (layoutDirection() == Qt::LeftToRight)
-        QGuiApplication::setLayoutDirection(Qt::RightToLeft);
-    else
-        QGuiApplication::setLayoutDirection(Qt::LeftToRight);
-}
diff --git a/examples/widgets/mainwindows/mdi/mainwindow.h b/examples/widgets/mainwindows/mdi/mainwindow.h
deleted file mode 100644
index 8fec975c6e..0000000000
--- a/examples/widgets/mainwindows/mdi/mainwindow.h
+++ /dev/null
@@ -1,84 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#ifndef MAINWINDOW_H
-#define MAINWINDOW_H
-
-#include <QMainWindow>
-
-class MdiChild;
-QT_BEGIN_NAMESPACE
-class QAction;
-class QMenu;
-class QMdiArea;
-class QMdiSubWindow;
-QT_END_NAMESPACE
-
-class MainWindow : public QMainWindow
-{
-    Q_OBJECT
-
-public:
-    MainWindow();
-
-    bool openFile(const QString &fileName);
-
-protected:
-    void closeEvent(QCloseEvent *event) override;
-
-private slots:
-    void newFile();
-    void open();
-    void save();
-    void saveAs();
-    void updateRecentFileActions();
-    void openRecentFile();
-#ifndef QT_NO_CLIPBOARD
-    void cut();
-    void copy();
-    void paste();
-#endif
-    void about();
-    void updateMenus();
-    void updateWindowMenu();
-    MdiChild *createMdiChild();
-    void switchLayoutDirection();
-
-private:
-    enum { MaxRecentFiles = 5 };
-
-    void createActions();
-    void createStatusBar();
-    void readSettings();
-    void writeSettings();
-    bool loadFile(const QString &fileName);
-    static bool hasRecentFiles();
-    void prependToRecentFiles(const QString &fileName);
-    void setRecentFilesVisible(bool visible);
-    MdiChild *activeMdiChild() const;
-    QMdiSubWindow *findMdiChild(const QString &fileName) const;
-
-    QMdiArea *mdiArea;
-
-    QMenu *windowMenu;
-    QAction *newAct;
-    QAction *saveAct;
-    QAction *saveAsAct;
-    QAction *recentFileActs[MaxRecentFiles];
-    QAction *recentFileSeparator;
-    QAction *recentFileSubMenuAct;
-#ifndef QT_NO_CLIPBOARD
-    QAction *cutAct;
-    QAction *copyAct;
-    QAction *pasteAct;
-#endif
-    QAction *closeAct;
-    QAction *closeAllAct;
-    QAction *tileAct;
-    QAction *cascadeAct;
-    QAction *nextAct;
-    QAction *previousAct;
-    QAction *windowMenuSeparatorAct;
-};
-
-#endif
diff --git a/examples/widgets/mainwindows/mdi/mdi.pro b/examples/widgets/mainwindows/mdi/mdi.pro
deleted file mode 100644
index f2c236f7e2..0000000000
--- a/examples/widgets/mainwindows/mdi/mdi.pro
+++ /dev/null
@@ -1,13 +0,0 @@
-QT += widgets
-requires(qtConfig(filedialog))
-
-HEADERS       = mainwindow.h \
-                mdichild.h
-SOURCES       = main.cpp \
-                mainwindow.cpp \
-                mdichild.cpp
-RESOURCES     = mdi.qrc
-
-# install
-target.path = $$[QT_INSTALL_EXAMPLES]/widgets/mainwindows/mdi
-INSTALLS += target
diff --git a/examples/widgets/mainwindows/mdi/mdi.qrc b/examples/widgets/mainwindows/mdi/mdi.qrc
deleted file mode 100644
index 0a776fab4d..0000000000
--- a/examples/widgets/mainwindows/mdi/mdi.qrc
+++ /dev/null
@@ -1,10 +0,0 @@
-<!DOCTYPE RCC><RCC version="1.0">
-<qresource>
-    <file>images/copy.png</file>
-    <file>images/cut.png</file>
-    <file>images/new.png</file>
-    <file>images/open.png</file>
-    <file>images/paste.png</file>
-    <file>images/save.png</file>
-</qresource>
-</RCC>
diff --git a/examples/widgets/mainwindows/mdi/mdichild.cpp b/examples/widgets/mainwindows/mdi/mdichild.cpp
deleted file mode 100644
index 8f96ec623d..0000000000
--- a/examples/widgets/mainwindows/mdi/mdichild.cpp
+++ /dev/null
@@ -1,150 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#include <QtWidgets>
-
-#include "mdichild.h"
-
-MdiChild::MdiChild()
-{
-    setAttribute(Qt::WA_DeleteOnClose);
-    isUntitled = true;
-}
-
-void MdiChild::newFile()
-{
-    static int sequenceNumber = 1;
-
-    isUntitled = true;
-    curFile = tr("document%1.txt").arg(sequenceNumber++);
-    setWindowTitle(curFile + "[*]");
-
-    connect(document(), &QTextDocument::contentsChanged,
-            this, &MdiChild::documentWasModified);
-}
-
-bool MdiChild::loadFile(const QString &fileName)
-{
-    QFile file(fileName);
-    if (!file.open(QFile::ReadOnly | QFile::Text)) {
-        QMessageBox::warning(this, tr("MDI"),
-                             tr("Cannot read file %1:\n%2.")
-                             .arg(fileName)
-                             .arg(file.errorString()));
-        return false;
-    }
-
-    QTextStream in(&file);
-    QGuiApplication::setOverrideCursor(Qt::WaitCursor);
-    setPlainText(in.readAll());
-    QGuiApplication::restoreOverrideCursor();
-
-    setCurrentFile(fileName);
-
-    connect(document(), &QTextDocument::contentsChanged,
-            this, &MdiChild::documentWasModified);
-
-    return true;
-}
-
-bool MdiChild::save()
-{
-    if (isUntitled) {
-        return saveAs();
-    } else {
-        return saveFile(curFile);
-    }
-}
-
-bool MdiChild::saveAs()
-{
-    QString fileName = QFileDialog::getSaveFileName(this, tr("Save As"),
-                                                    curFile);
-    if (fileName.isEmpty())
-        return false;
-
-    return saveFile(fileName);
-}
-
-bool MdiChild::saveFile(const QString &fileName)
-{
-    QString errorMessage;
-
-    QGuiApplication::setOverrideCursor(Qt::WaitCursor);
-    QSaveFile file(fileName);
-    if (file.open(QFile::WriteOnly | QFile::Text)) {
-        QTextStream out(&file);
-        out << toPlainText();
-        if (!file.commit()) {
-            errorMessage = tr("Cannot write file %1:\n%2.")
-                           .arg(QDir::toNativeSeparators(fileName), file.errorString());
-        }
-    } else {
-        errorMessage = tr("Cannot open file %1 for writing:\n%2.")
-                       .arg(QDir::toNativeSeparators(fileName), file.errorString());
-    }
-    QGuiApplication::restoreOverrideCursor();
-
-    if (!errorMessage.isEmpty()) {
-        QMessageBox::warning(this, tr("MDI"), errorMessage);
-        return false;
-    }
-
-    setCurrentFile(fileName);
-    return true;
-}
-
-QString MdiChild::userFriendlyCurrentFile()
-{
-    return strippedName(curFile);
-}
-
-void MdiChild::closeEvent(QCloseEvent *event)
-{
-    if (maybeSave()) {
-        event->accept();
-    } else {
-        event->ignore();
-    }
-}
-
-void MdiChild::documentWasModified()
-{
-    setWindowModified(document()->isModified());
-}
-
-bool MdiChild::maybeSave()
-{
-    if (!document()->isModified())
-        return true;
-    const QMessageBox::StandardButton ret
-            = QMessageBox::warning(this, tr("MDI"),
-                                   tr("'%1' has been modified.\n"
-                                      "Do you want to save your changes?")
-                                   .arg(userFriendlyCurrentFile()),
-                                   QMessageBox::Save | QMessageBox::Discard
-                                   | QMessageBox::Cancel);
-    switch (ret) {
-    case QMessageBox::Save:
-        return save();
-    case QMessageBox::Cancel:
-        return false;
-    default:
-        break;
-    }
-    return true;
-}
-
-void MdiChild::setCurrentFile(const QString &fileName)
-{
-    curFile = QFileInfo(fileName).canonicalFilePath();
-    isUntitled = false;
-    document()->setModified(false);
-    setWindowModified(false);
-    setWindowTitle(userFriendlyCurrentFile() + "[*]");
-}
-
-QString MdiChild::strippedName(const QString &fullFileName)
-{
-    return QFileInfo(fullFileName).fileName();
-}
diff --git a/examples/widgets/mainwindows/mdi/mdichild.h b/examples/widgets/mainwindows/mdi/mdichild.h
deleted file mode 100644
index ba9c3d8f1c..0000000000
--- a/examples/widgets/mainwindows/mdi/mdichild.h
+++ /dev/null
@@ -1,39 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#ifndef MDICHILD_H
-#define MDICHILD_H
-
-#include <QTextEdit>
-
-class MdiChild : public QTextEdit
-{
-    Q_OBJECT
-
-public:
-    MdiChild();
-
-    void newFile();
-    bool loadFile(const QString &fileName);
-    bool save();
-    bool saveAs();
-    bool saveFile(const QString &fileName);
-    QString userFriendlyCurrentFile();
-    QString currentFile() { return curFile; }
-
-protected:
-    void closeEvent(QCloseEvent *event) override;
-
-private slots:
-    void documentWasModified();
-
-private:
-    bool maybeSave();
-    void setCurrentFile(const QString &fileName);
-    QString strippedName(const QString &fullFileName);
-
-    QString curFile;
-    bool isUntitled;
-};
-
-#endif