diff -r 000000000000 -r 1918ee327afb examples/xmlpatterns/recipes/querymainwindow.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/xmlpatterns/recipes/querymainwindow.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,124 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples 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 <QtXmlPatterns>
+
+#include "querymainwindow.h"
+#include "xmlsyntaxhighlighter.h"
+
+//! [0]
+QueryMainWindow::QueryMainWindow() : ui_defaultQueries(0)
+{
+    setupUi(this);
+
+    new XmlSyntaxHighlighter(qFindChild<QTextEdit*>(this, "inputTextEdit")->document());
+    new XmlSyntaxHighlighter(qFindChild<QTextEdit*>(this, "outputTextEdit")->document());
+
+    ui_defaultQueries = qFindChild<QComboBox*>(this, "defaultQueries");
+    QMetaObject::connectSlotsByName(this);
+    connect(ui_defaultQueries, SIGNAL(currentIndexChanged(int)), SLOT(displayQuery(int)));
+
+    loadInputFile();
+    const QStringList queries(QDir(":/files/", "*.xq").entryList());
+    int len = queries.count();
+    for(int i = 0; i < len; ++i)
+        ui_defaultQueries->addItem(queries.at(i));
+}
+//! [0]
+
+
+//! [1]
+void QueryMainWindow::displayQuery(int index)
+{
+    QFile queryFile(QString(":files/") + ui_defaultQueries->itemText(index));
+    queryFile.open(QIODevice::ReadOnly);
+    const QString query(QString::fromLatin1(queryFile.readAll()));
+    qFindChild<QTextEdit*>(this, "queryTextEdit")->setPlainText(query);
+
+    evaluate(query);
+}
+//! [1]
+
+
+void QueryMainWindow::loadInputFile()
+{
+    QFile forView;
+    forView.setFileName(":/files/cookbook.xml");
+    if (!forView.open(QIODevice::ReadOnly)) {
+        QMessageBox::information(this,
+            tr("Unable to open file"), forView.errorString());
+        return;
+    }
+
+    QTextStream in(&forView);
+    QString inputDocument = in.readAll();
+    qFindChild<QTextEdit*>(this, "inputTextEdit")->setPlainText(inputDocument);
+}
+
+
+//! [2]
+void QueryMainWindow::evaluate(const QString &str)
+{
+    QFile sourceDocument;
+    sourceDocument.setFileName(":/files/cookbook.xml");
+    sourceDocument.open(QIODevice::ReadOnly);
+
+    QByteArray outArray;
+    QBuffer buffer(&outArray);
+    buffer.open(QIODevice::ReadWrite);
+
+    QXmlQuery query;
+    query.bindVariable("inputDocument", &sourceDocument);
+    query.setQuery(str);
+    if (!query.isValid())
+        return;
+
+    QXmlFormatter formatter(query, &buffer);
+    if (!query.evaluateTo(&formatter))
+        return;
+
+    buffer.close();
+    qFindChild<QTextEdit*>(this, "outputTextEdit")->setPlainText(QString::fromUtf8(outArray.constData()));
+
+}
+//! [2]
+