Long live Qt 4.5!

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diff --git a/src/gui/widgets/qabstractscrollarea.h b/src/gui/widgets/qabstractscrollarea.h
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui 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 qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QABSTRACTSCROLLAREA_H
+#define QABSTRACTSCROLLAREA_H
+
+#include <QtGui/qframe.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Gui)
+
+#ifndef QT_NO_SCROLLAREA
+
+class QScrollBar;
+class QAbstractScrollAreaPrivate;
+
+class Q_GUI_EXPORT QAbstractScrollArea : public QFrame
+{
+    Q_OBJECT
+    Q_PROPERTY(Qt::ScrollBarPolicy verticalScrollBarPolicy READ verticalScrollBarPolicy WRITE setVerticalScrollBarPolicy)
+    Q_PROPERTY(Qt::ScrollBarPolicy horizontalScrollBarPolicy READ horizontalScrollBarPolicy WRITE setHorizontalScrollBarPolicy)
+
+public:
+    explicit QAbstractScrollArea(QWidget* parent=0);
+    ~QAbstractScrollArea();
+
+    Qt::ScrollBarPolicy verticalScrollBarPolicy() const;
+    void setVerticalScrollBarPolicy(Qt::ScrollBarPolicy);
+    QScrollBar *verticalScrollBar() const;
+    void setVerticalScrollBar(QScrollBar *scrollbar);
+
+    Qt::ScrollBarPolicy horizontalScrollBarPolicy() const;
+    void setHorizontalScrollBarPolicy(Qt::ScrollBarPolicy);
+    QScrollBar *horizontalScrollBar() const;
+    void setHorizontalScrollBar(QScrollBar *scrollbar);
+
+    QWidget *cornerWidget() const;
+    void setCornerWidget(QWidget *widget);
+
+    void addScrollBarWidget(QWidget *widget, Qt::Alignment alignment);
+    QWidgetList scrollBarWidgets(Qt::Alignment alignment);
+
+    QWidget *viewport() const;
+    void setViewport(QWidget *widget);
+    QSize maximumViewportSize() const;
+
+    QSize minimumSizeHint() const;
+
+    QSize sizeHint() const;
+
+protected Q_SLOTS:
+    void setupViewport(QWidget *viewport);
+
+protected:
+    QAbstractScrollArea(QAbstractScrollAreaPrivate &dd, QWidget *parent = 0);
+    void setViewportMargins(int left, int top, int right, int bottom);
+
+    bool event(QEvent *);
+    virtual bool viewportEvent(QEvent *);
+
+    void resizeEvent(QResizeEvent *);
+    void paintEvent(QPaintEvent *);
+    void mousePressEvent(QMouseEvent *);
+    void mouseReleaseEvent(QMouseEvent *);
+    void mouseDoubleClickEvent(QMouseEvent *);
+    void mouseMoveEvent(QMouseEvent *);
+#ifndef QT_NO_WHEELEVENT
+    void wheelEvent(QWheelEvent *);
+#endif
+#ifndef QT_NO_CONTEXTMENU
+    void contextMenuEvent(QContextMenuEvent *);
+#endif
+#ifndef QT_NO_DRAGANDDROP
+    void dragEnterEvent(QDragEnterEvent *);
+    void dragMoveEvent(QDragMoveEvent *);
+    void dragLeaveEvent(QDragLeaveEvent *);
+    void dropEvent(QDropEvent *);
+#endif
+
+    void keyPressEvent(QKeyEvent *);
+
+    virtual void scrollContentsBy(int dx, int dy);
+
+private:
+    Q_DECLARE_PRIVATE(QAbstractScrollArea)
+    Q_DISABLE_COPY(QAbstractScrollArea)
+    Q_PRIVATE_SLOT(d_func(), void _q_hslide(int))
+    Q_PRIVATE_SLOT(d_func(), void _q_vslide(int))
+    Q_PRIVATE_SLOT(d_func(), void _q_showOrHideScrollBars())
+
+    friend class QStyleSheetStyle;
+};
+
+#endif // QT_NO_SCROLLAREA
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QABSTRACTSCROLLAREA_H