diff -r dee5afe5301f -r 3f74d0d4af4c doc/src/snippets/textblock-fragments/mainwindow.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/doc/src/snippets/textblock-fragments/mainwindow.cpp	Thu Apr 08 14:19:33 2010 +0300
@@ -0,0 +1,149 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@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"));
+
+    QMenu *insertMenu = new QMenu(tr("&Insert"));
+
+    QAction *calendarAction = insertMenu->addAction(tr("&Calendar"));
+    calendarAction->setShortcut(tr("Ctrl+I"));
+
+    menuBar()->addMenu(fileMenu);
+    menuBar()->addMenu(insertMenu);
+
+    editor = new QTextEdit(this);
+
+    connect(saveAction, SIGNAL(triggered()), this, SLOT(saveFile()));
+    connect(quitAction, SIGNAL(triggered()), this, SLOT(close()));
+    connect(calendarAction, SIGNAL(triggered()), this, SLOT(insertCalendar()));
+
+    setCentralWidget(editor);
+    setWindowTitle(tr("Text Document Writer"));
+}
+
+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);
+    }
+}
+
+void MainWindow::insertCalendar()
+{
+    QTextCursor cursor(editor->textCursor());
+    cursor.movePosition(QTextCursor::Start); 
+
+    QTextCharFormat format(cursor.charFormat());
+    format.setFontFamily("Courier");
+    
+    QTextCharFormat boldFormat = format;
+    boldFormat.setFontWeight(QFont::Bold);
+
+    cursor.insertBlock();
+    cursor.insertText(" ", boldFormat);
+
+    QDate date = QDate::currentDate();
+    int year = date.year(), month = date.month();
+
+    for (int weekDay = 1; weekDay <= 7; ++weekDay) {
+        cursor.insertText(QString("%1 ").arg(QDate::shortDayName(weekDay), 3),
+            boldFormat);
+    }
+
+    cursor.insertBlock();
+    cursor.insertText(" ", format);
+
+    for (int column = 1; column < QDate(year, month, 1).dayOfWeek(); ++column) {
+        cursor.insertText("    ", format);
+    }
+
+    for (int day = 1; day <= date.daysInMonth(); ++day) {
+        int weekDay = QDate(year, month, day).dayOfWeek();
+
+        if (QDate(year, month, day) == date)
+            cursor.insertText(QString("%1 ").arg(day, 3), boldFormat);
+        else
+            cursor.insertText(QString("%1 ").arg(day, 3), format);
+
+        if (weekDay == 7) {
+            cursor.insertBlock();
+            cursor.insertText(" ", format);
+        }
+    }
+}
+
+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 << domDocument->toByteArray(1);
+        return true;
+    }
+    else
+        return false;
+}