Long live Qt 4.5!

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diff --git a/doc/src/snippets/textdocument-frames/mainwindow.cpp b/doc/src/snippets/textdocument-frames/mainwindow.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include "mainwindow.h"
+#include "xmlwriter.h"
+
+MainWindow::MainWindow()
+{
+    QMenu *fileMenu = new QMenu(tr("&File"));
+
+    QAction *saveAction = fileMenu->addAction(tr("&Save..."));
+    saveAction->setShortcut(tr("Ctrl+S"));
+
+    QAction *quitAction = fileMenu->addAction(tr("E&xit"));
+    quitAction->setShortcut(tr("Ctrl+Q"));
+
+    menuBar()->addMenu(fileMenu);
+    editor = new QTextEdit();
+
+    QTextCursor cursor(editor->textCursor());
+    cursor.movePosition(QTextCursor::Start); 
+
+    QTextFrame *mainFrame = cursor.currentFrame();
+    
+    QTextCharFormat plainCharFormat;
+    QTextCharFormat boldCharFormat;
+    boldCharFormat.setFontWeight(QFont::Bold);
+/*  main frame
+//! [0]
+    QTextFrame *mainFrame = cursor.currentFrame();
+    cursor.insertText(...);
+//! [0]
+*/
+    cursor.insertText("Text documents are represented by the "
+                      "QTextDocument class, rather than by QString objects. "
+                      "Each QTextDocument object contains information about "
+                      "the document's internal representation, its structure, "
+                      "and keeps track of modifications to provide undo/redo "
+                      "facilities. This approach allows features such as the "
+                      "layout management to be delegated to specialized "
+                      "classes, but also provides a focus for the framework.",
+                      plainCharFormat);
+
+//! [1]
+    QTextFrameFormat frameFormat;
+    frameFormat.setMargin(32);
+    frameFormat.setPadding(8);
+    frameFormat.setBorder(4);
+//! [1]
+    cursor.insertFrame(frameFormat);
+
+/*  insert frame
+//! [2]
+    cursor.insertFrame(frameFormat);
+    cursor.insertText(...);
+//! [2]
+*/
+    cursor.insertText("Documents are either converted from external sources "
+                      "or created from scratch using Qt. The creation process "
+                      "can done by an editor widget, such as QTextEdit, or by "
+                      "explicit calls to the Scribe API.", boldCharFormat);
+
+    cursor = mainFrame->lastCursorPosition();
+/*  last cursor
+//! [3]
+    cursor = mainFrame->lastCursorPosition();
+    cursor.insertText(...);
+//! [3]
+*/
+    cursor.insertText("There are two complementary ways to visualize the "
+                      "contents of a document: as a linear buffer that is "
+                      "used by editors to modify the contents, and as an "
+                      "object hierarchy containing structural information "
+                      "that is useful to layout engines. In the hierarchical "
+                      "model, the objects generally correspond to visual "
+                      "elements such as frames, tables, and lists. At a lower "
+                      "level, these elements describe properties such as the "
+                      "style of text used and its alignment. The linear "
+                      "representation of the document is used for editing and "
+                      "manipulation of the document's contents.",
+                      plainCharFormat);
+
+
+    connect(saveAction, SIGNAL(triggered()), this, SLOT(saveFile()));
+    connect(quitAction, SIGNAL(triggered()), this, SLOT(close()));
+
+    setCentralWidget(editor);
+    setWindowTitle(tr("Text Document Frames"));
+}
+
+void MainWindow::saveFile()
+{
+    QString fileName = QFileDialog::getSaveFileName(this,
+        tr("Save document as:"), "", tr("XML (*.xml)"));
+
+    if (!fileName.isEmpty()) {
+        if (writeXml(fileName))
+            setWindowTitle(fileName);
+        else
+            QMessageBox::warning(this, tr("Warning"),
+                tr("Failed to save the document."), QMessageBox::Cancel,
+                QMessageBox::NoButton);
+    }
+}
+bool MainWindow::writeXml(const QString &fileName)
+{
+    XmlWriter documentWriter(editor->document());
+
+    QDomDocument *domDocument = documentWriter.toXml();
+    QFile file(fileName);
+
+    if (file.open(QFile::WriteOnly)) {
+        QTextStream textStream(&file);
+        textStream.setCodec(QTextCodec::codecForName("UTF-8"));
+        
+        textStream << domDocument->toString(1).toUtf8();
+        file.close();
+        return true;
+    }
+    else
+        return false;
+}