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diff --git a/demos/sub-attaq/custompropertyanimation.cpp b/demos/sub-attaq/custompropertyanimation.cpp
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+++ b/demos/sub-attaq/custompropertyanimation.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtCore module 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 http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "custompropertyanimation.h"
+
+// Qt
+#include <QtCore/qdebug.h>
+
+CustomPropertyAnimation::CustomPropertyAnimation(QObject *parent) :
+    QVariantAnimation(parent), animProp(0)
+{
+}
+
+CustomPropertyAnimation::~CustomPropertyAnimation()
+{
+}
+
+void CustomPropertyAnimation::setProperty(AbstractProperty *_animProp)
+{
+    if (animProp == _animProp)
+        return;
+    delete animProp;
+    animProp = _animProp;
+}
+
+/*!
+    \reimp
+ */
+void CustomPropertyAnimation::updateCurrentValue(const QVariant &value)
+{
+    if (!animProp || state() == QAbstractAnimation::Stopped)
+        return;
+
+    animProp->write(value);
+}
+
+
+/*!
+    \reimp
+*/
+void CustomPropertyAnimation::updateState(QAbstractAnimation::State oldState, QAbstractAnimation::State newState)
+{
+    // Initialize start value
+    if (oldState == QAbstractAnimation::Stopped) {
+        if (!animProp)
+            return;
+        QVariant def = animProp->read();
+        if (def.isValid()) {
+            const int t = def.userType();
+            KeyValues values = keyValues();
+            //this ensures that all the keyValues are of type t
+            for (int i = 0; i < values.count(); ++i) {
+                QVariantAnimation::KeyValue &pair = values[i];
+                if (pair.second.userType() != t)
+                    pair.second.convert(static_cast<QVariant::Type>(t));
+            }
+            //let's now update the key values
+            setKeyValues(values);
+        }
+
+        if (animProp && !startValue().isValid() && currentTime() == 0
+            || (currentTime() == duration() && currentLoop() == (loopCount() - 1))) {
+                setStartValue(def);
+        }
+    }
+
+    QVariantAnimation::updateState(oldState, newState);
+}
+
+#include "moc_custompropertyanimation.cpp"