diff -r dee5afe5301f -r 3f74d0d4af4c doc/src/snippets/textdocument-printing/mainwindow.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/doc/src/snippets/textdocument-printing/mainwindow.cpp	Thu Apr 08 14:19:33 2010 +0300
@@ -0,0 +1,125 @@
+/****************************************************************************
+**
+** 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"
+
+MainWindow::MainWindow()
+{
+    QMenu *fileMenu = new QMenu(tr("&File"));
+
+    fileMenu->addAction(tr("&Open..."), this, SLOT(openFile()),
+                        QKeySequence(tr("Ctrl+O", "File|Open")));
+
+    printAction = fileMenu->addAction(tr("&Print..."), this, SLOT(printFile()));
+    printAction->setEnabled(false);
+
+    pdfPrintAction = fileMenu->addAction(tr("Print as P&DF..."), this, SLOT(printPdf()));
+    pdfPrintAction->setEnabled(false);
+
+    fileMenu->addAction(tr("E&xit"), this, SLOT(close()),
+                        QKeySequence(tr("Ctrl+Q", "File|Exit")));
+
+    menuBar()->addMenu(fileMenu);
+
+    editor = new QTextEdit(this);
+    document = new QTextDocument(this);
+    editor->setDocument(document);
+
+    connect(editor, SIGNAL(selectionChanged()), this, SLOT(updateMenus()));
+
+    setCentralWidget(editor);
+    setWindowTitle(tr("Text Document Writer"));
+}
+
+void MainWindow::openFile()
+{
+    QString fileName = QFileDialog::getOpenFileName(this,
+        tr("Open file"), currentFile, "HTML files (*.html);;Text files (*.txt)");
+    
+    if (!fileName.isEmpty()) {
+        QFileInfo info(fileName);
+        if (info.completeSuffix() == "html") {
+            QFile file(fileName);
+            
+            if (file.open(QIODevice::ReadOnly)) {
+                editor->setHtml(file.readAll());
+                file.close();
+                currentFile = fileName;
+            }
+        } else if (info.completeSuffix() == "txt") {
+            QFile file(fileName);
+            
+            if (file.open(QIODevice::ReadOnly)) {
+                editor->setPlainText(file.readAll());
+                file.close();
+                currentFile = fileName;
+            }
+        }
+        printAction->setEnabled(true);
+        pdfPrintAction->setEnabled(true);
+    }
+}
+
+void MainWindow::printFile()
+{
+//! [0]
+    QTextDocument *document = editor->document();
+    QPrinter printer;
+
+    QPrintDialog *dlg = new QPrintDialog(&printer, this);
+    if (dlg->exec() != QDialog::Accepted)
+        return;
+
+    document->print(&printer);
+//! [0]
+}
+
+void MainWindow::printPdf()
+{
+    QPrinter printer(QPrinter::HighResolution);
+    printer.setOutputFormat(QPrinter::PdfFormat);
+
+    QPrintDialog *printDialog = new QPrintDialog(&printer, this);
+    if (printDialog->exec() == QDialog::Accepted)
+        editor->document()->print(&printer);
+}