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diff --git a/src/Authoring/Qt3DStudio/DragAndDrop/TimelineDropSource.h b/src/Authoring/Qt3DStudio/DragAndDrop/TimelineDropSource.h
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+/****************************************************************************
+**
+** Copyright (C) 1999-2002 NVIDIA Corporation.
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt 3D Studio.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** 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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//==============================================================================
+//	Prefix
+//==============================================================================
+#ifndef __TIMELINEDROPSOURCE_H__
+#define __TIMELINEDROPSOURCE_H__
+
+//==============================================================================
+//	Includes
+//==============================================================================
+#include "StudioApp.h"
+#include "DropSource.h"
+
+//==============================================================================
+//	Forward
+//==============================================================================
+class CDropTarget;
+class IDragable;
+
+class CTimeLineDropSource : public CDropSource
+{
+protected:
+    bool m_Copy;
+
+public:
+    CTimeLineDropSource(long inFlavor, IDragable *inDraggable);
+
+    bool CanMove() override;
+    bool CanCopy() override;
+    bool ValidateTarget(CDropTarget *inTarget) override;
+    void InterpretKeyFlags(long inModifyerKeys) override;
+
+    CCmd *GenerateAssetCommand(qt3dsdm::Qt3DSDMInstanceHandle inTarget,
+                                       EDROPDESTINATION inDestType,
+                                       qt3dsdm::Qt3DSDMSlideHandle inSlide) override;
+};
+
+#endif // #ifndef __TIMELINEDROPSOURCE_H__