1 files changed, 0 insertions, 150 deletions
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();
-}