diff -r dee5afe5301f -r 3f74d0d4af4c doc/src/snippets/qtablewidget-dnd/mainwindow.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/doc/src/snippets/qtablewidget-dnd/mainwindow.cpp	Thu Apr 08 14:19:33 2010 +0300
@@ -0,0 +1,144 @@
+/****************************************************************************
+**
+** 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 "math.h"
+
+#include "mainwindow.h"
+
+MainWindow::MainWindow()
+{
+    QMenu *fileMenu = new QMenu(tr("&File"));
+
+    QAction *quitAction = fileMenu->addAction(tr("E&xit"));
+    quitAction->setShortcut(tr("Ctrl+Q"));
+
+    QMenu *itemsMenu = new QMenu(tr("&Items"));
+
+    QAction *sumItemsAction = itemsMenu->addAction(tr("&Sum Items"));
+    QAction *averageItemsAction = itemsMenu->addAction(tr("&Average Items"));
+
+    menuBar()->addMenu(fileMenu);
+    menuBar()->addMenu(itemsMenu);
+
+    tableWidget = new QTableWidget(12, 3, this);
+    tableWidget->setSelectionMode(QAbstractItemView::ExtendedSelection);
+    tableWidget->setDragEnabled(true);
+    tableWidget->setAcceptDrops(true);
+    tableWidget->setDropIndicatorShown(true);
+
+    QTableWidgetItem *valuesHeaderItem = new QTableWidgetItem(tr("Values"));
+    tableWidget->setHorizontalHeaderItem(0, valuesHeaderItem);
+    valuesHeaderItem->setTextAlignment(Qt::AlignVCenter);
+    QTableWidgetItem *squaresHeaderItem = new QTableWidgetItem(tr("Squares"));
+    squaresHeaderItem->setIcon(QIcon(QPixmap(":/Images/squared.png")));
+    squaresHeaderItem->setTextAlignment(Qt::AlignVCenter);
+    QTableWidgetItem *cubesHeaderItem = new QTableWidgetItem(tr("Cubes"));
+    cubesHeaderItem->setIcon(QIcon(QPixmap(":/Images/cubed.png")));
+    cubesHeaderItem->setTextAlignment(Qt::AlignVCenter);
+    tableWidget->setHorizontalHeaderItem(1, squaresHeaderItem);
+    tableWidget->setHorizontalHeaderItem(2, cubesHeaderItem);
+
+    connect(quitAction, SIGNAL(triggered()), this, SLOT(close()));
+    connect(sumItemsAction, SIGNAL(triggered()), this, SLOT(sumItems()));
+    connect(averageItemsAction, SIGNAL(triggered()), this, SLOT(averageItems()));
+
+    setupTableItems();
+
+    setCentralWidget(tableWidget);
+    setWindowTitle(tr("Table Widget"));
+}
+
+void MainWindow::setupTableItems()
+{
+    for (int row = 0; row < tableWidget->rowCount()-1; ++row) {
+        for (int column = 0; column < tableWidget->columnCount(); ++column) {
+    QTableWidgetItem *newItem = new QTableWidgetItem(tr("%1").arg(
+        pow((float)row, (float)column+1)));
+    tableWidget->setItem(row, column, newItem);
+        }
+    }
+    for (int column = 0; column < tableWidget->columnCount(); ++column) {
+        QTableWidgetItem *newItem = new QTableWidgetItem;
+        newItem->setFlags(Qt::ItemIsEnabled | Qt::ItemIsUserCheckable);
+        tableWidget->setItem(tableWidget->rowCount()-1, column, newItem);
+    }
+}
+
+void MainWindow::averageItems()
+{
+    QList<QTableWidgetItem *> selected = tableWidget->selectedItems();
+    QTableWidgetItem *item;
+    int number = 0;
+    double total = 0;
+
+    foreach (item, selected) {
+        bool ok;
+        double value = item->text().toDouble(&ok);
+        
+        if (ok && !item->text().isEmpty()) {
+            total += value;
+            number++;
+        }
+    }
+    if (number > 0)
+        tableWidget->currentItem()->setText(QString::number(total/number));
+}
+
+void MainWindow::sumItems()
+{
+    QList<QTableWidgetItem *> selected = tableWidget->selectedItems();
+    QTableWidgetItem *item;
+    int number = 0;
+    double total = 0;
+
+    foreach (item, selected) {
+        bool ok;
+        double value = item->text().toDouble(&ok);
+
+        if (ok && !item->text().isEmpty()) {
+            total += value;
+            number++;
+        }
+    }
+    if (number > 0)
+        tableWidget->currentItem()->setText(QString::number(total));
+}