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diff --git a/src/widgets/widgets/qmacnativewidget_mac.mm b/src/widgets/widgets/qmacnativewidget_mac.mm
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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 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 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#import <Cocoa/Cocoa.h>
+#import <private/qcocoaview_mac_p.h>
+#include "qmacnativewidget_mac.h"
+#include <private/qwidget_p.h>
+
+/*!
+    \class QMacNativeWidget
+    \since 4.5
+    \brief The QMacNativeWidget class provides a widget for Mac OS X that provides a way to put Qt widgets into Carbon
+    or Cocoa hierarchies depending on how Qt was configured.
+
+    \ingroup advanced
+
+    On Mac OS X, there is a difference between a window and view;
+    normally expressed as widgets in Qt.  Qt makes assumptions about its
+    parent-child hierarchy that make it complex to put an arbitrary Qt widget
+    into a hierarchy of "normal" views from Apple frameworks. QMacNativeWidget
+    bridges the gap between views and windows and makes it possible to put a
+    hierarchy of Qt widgets into a non-Qt window or view.
+
+    QMacNativeWidget pretends it is a window (i.e. isWindow() will return true),
+    but it cannot be shown on its own. It needs to be put into a window
+    when it is created or later through a native call.
+
+    QMacNativeWidget works for either Carbon or Cocoa depending on how Qt was configured. If Qt is
+    using Carbon, QMacNativeWidget will embed into Carbon hierarchies. If Qt is
+    using Cocoa, QMacNativeWidget embeds into Cocoa hierarchies.
+
+    Here is an example of putting a QPushButton into a NSWindow:
+
+    \snippet doc/src/snippets/qmacnativewidget/main.mm 0
+
+    On Carbon, this would do the equivalent:
+
+    \snippet doc/src/snippets/qmacnativewidget/main.mm 1
+
+    Note that QMacNativeWidget requires knowledge of Carbon or Cocoa. All it
+    does is get the Qt hierarchy into a window not owned by Qt. It is then up
+    to the programmer to ensure it is placed correctly in the window and
+    responds correctly to events.
+*/
+
+QT_BEGIN_NAMESPACE
+
+class QMacNativeWidgetPrivate : public QWidgetPrivate
+{
+};
+
+extern OSViewRef qt_mac_create_widget(QWidget *widget, QWidgetPrivate *widgetPrivate, OSViewRef parent);
+
+
+/*!
+    Create a QMacNativeWidget with \a parentView as its "superview" (i.e.,
+    parent). The \a parentView is either an HIViewRef if Qt is using Carbon or
+    a NSView pointer if Qt is using Cocoa.
+*/
+QMacNativeWidget::QMacNativeWidget(void *parentView)
+    : QWidget(*new QMacNativeWidgetPrivate, 0, Qt::Window)
+{
+    Q_D(QMacNativeWidget);
+    OSViewRef myView = qt_mac_create_widget(this, d, OSViewRef(parentView));
+
+    d->topData()->embedded = true;
+    create(WId(myView), false, false);
+    setPalette(QPalette(Qt::transparent));
+    setAttribute(Qt::WA_SetPalette, false);
+    setAttribute(Qt::WA_LayoutUsesWidgetRect);
+}
+
+/*!
+    Destroy the QMacNativeWidget.
+*/
+QMacNativeWidget::~QMacNativeWidget()
+{
+}
+
+/*!
+    \reimp
+*/
+QSize QMacNativeWidget::sizeHint() const
+{
+    return QSize(200, 200);
+}
+/*!
+    \reimp
+*/
+bool QMacNativeWidget::event(QEvent *ev)
+{
+    return QWidget::event(ev);
+}
+
+QT_END_NAMESPACE