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diff --git a/src/gui/widgets/qcheckbox.h b/src/gui/widgets/qcheckbox.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 QCHECKBOX_H
+#define QCHECKBOX_H
+
+#include <QtGui/qabstractbutton.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Gui)
+
+class QCheckBoxPrivate;
+class QStyleOptionButton;
+
+class Q_GUI_EXPORT QCheckBox : public QAbstractButton
+{
+    Q_OBJECT
+
+    Q_PROPERTY(bool tristate READ isTristate WRITE setTristate)
+
+public:
+    explicit QCheckBox(QWidget *parent=0);
+    explicit QCheckBox(const QString &text, QWidget *parent=0);
+
+
+    QSize sizeHint() const;
+
+    void setTristate(bool y = true);
+    bool isTristate() const;
+
+    Qt::CheckState checkState() const;
+    void setCheckState(Qt::CheckState state);
+
+Q_SIGNALS:
+    void stateChanged(int);
+
+protected:
+    bool event(QEvent *e);
+    bool hitButton(const QPoint &pos) const;
+    void checkStateSet();
+    void nextCheckState();
+    void paintEvent(QPaintEvent *);
+    void mouseMoveEvent(QMouseEvent *);
+    void initStyleOption(QStyleOptionButton *option) const;
+
+#ifdef QT3_SUPPORT
+public:
+    enum ToggleState {
+        Off =      Qt::Unchecked,
+        NoChange = Qt::PartiallyChecked,
+        On =       Qt::Checked
+    };
+    inline QT3_SUPPORT ToggleState state() const
+        { return static_cast<QCheckBox::ToggleState>(static_cast<int>(checkState())); }
+    inline QT3_SUPPORT void setState(ToggleState state)
+        { setCheckState(static_cast<Qt::CheckState>(static_cast<int>(state))); }
+    inline QT3_SUPPORT void setNoChange()
+        { setCheckState(Qt::PartiallyChecked); }
+    QT3_SUPPORT_CONSTRUCTOR QCheckBox(QWidget *parent, const char* name);
+    QT3_SUPPORT_CONSTRUCTOR QCheckBox(const QString &text, QWidget *parent, const char* name);
+#endif
+
+private:
+    Q_DECLARE_PRIVATE(QCheckBox)
+    Q_DISABLE_COPY(QCheckBox)
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QCHECKBOX_H