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diff --git a/src/quick/designer/qquickdesignerwindowmanager_p.h b/src/quick/designer/qquickdesignerwindowmanager_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtQuick module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** 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 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef DESIGNERWINDOWMANAGER_P_H
+#define DESIGNERWINDOWMANAGER_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/QScopedPointer>
+
+#include <private/qsgrenderloop_p.h>
+#include <private/qtquickglobal_p.h>
+#include <QtQuick/private/qsgcontext_p.h>
+
+
+QT_BEGIN_NAMESPACE
+
+class QQuickWindow;
+class QSGContext;
+class QSGRenderContext;
+class QAnimationDriver;
+class QOpenGLContext;
+
+class QQuickDesignerWindowManager : public QSGRenderLoop
+{
+    Q_OBJECT
+public:
+    QQuickDesignerWindowManager();
+
+    void show(QQuickWindow *window);
+    void hide(QQuickWindow *window);
+
+    void windowDestroyed(QQuickWindow *window);
+
+    void makeOpenGLContext(QQuickWindow *window);
+    void exposureChanged(QQuickWindow *window);
+    QImage grab(QQuickWindow *window);
+
+    void maybeUpdate(QQuickWindow *window);
+    void update(QQuickWindow *window); // identical for this implementation.
+
+    void releaseResources(QQuickWindow *) { }
+
+    QAnimationDriver *animationDriver() const { return 0; }
+
+    QSGContext *sceneGraphContext() const;
+    QSGRenderContext *createRenderContext(QSGContext *) const { return m_renderContext.data(); }
+
+    static void createOpenGLContext(QQuickWindow *window);
+
+private:
+    QScopedPointer<QOpenGLContext> m_openGlContext;
+    QScopedPointer<QSGContext> m_sgContext;
+    QScopedPointer<QSGRenderContext> m_renderContext;
+};
+
+QT_END_NAMESPACE
+
+#endif // DESIGNERWINDOWMANAGER_P_H