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diff --git a/src/qt3support/widgets/q3widgetstack.h b/src/qt3support/widgets/q3widgetstack.h
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt3Support 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 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef Q3WIDGETSTACK_H
+#define Q3WIDGETSTACK_H
+
+#include <Qt3Support/q3frame.h>
+#include <Qt3Support/q3intdict.h>
+#include <Qt3Support/q3ptrdict.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Qt3SupportLight)
+
+class Q3WidgetStackPrivate;
+
+
+class Q_COMPAT_EXPORT Q3WidgetStack: public Q3Frame
+{
+    Q_OBJECT
+public:
+    Q3WidgetStack(QWidget* parent, const char* name=0, Qt::WindowFlags f=0);
+
+    ~Q3WidgetStack();
+
+    int addWidget(QWidget *, int = -1);
+    void removeWidget(QWidget *);
+
+    QSize sizeHint() const;
+    QSize minimumSizeHint() const;
+    void setVisible(bool visible);
+
+    QWidget * widget(int) const;
+    int id(QWidget *) const;
+
+    QWidget * visibleWidget() const;
+
+    void setFrameRect(const QRect &);
+
+Q_SIGNALS:
+    void aboutToShow(int);
+    void aboutToShow(QWidget *);
+
+public Q_SLOTS:
+    void raiseWidget(int);
+    void raiseWidget(QWidget *);
+
+protected:
+    void frameChanged();
+    void resizeEvent(QResizeEvent *);
+    bool event(QEvent* e);
+
+    virtual void setChildGeometries();
+    void childEvent(QChildEvent *);
+
+private:
+    void init();
+
+    Q3WidgetStackPrivate * d;
+    Q3IntDict<QWidget> * dict;
+    Q3PtrDict<QWidget> * focusWidgets;
+    QWidget * topWidget;
+    QWidget * invisible;
+
+    Q_DISABLE_COPY(Q3WidgetStack)
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // Q3WIDGETSTACK_H