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diff --git a/src/Authoring/Studio/Controls/FlowLayout.h b/src/Authoring/Studio/Controls/FlowLayout.h
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+++ b/src/Authoring/Studio/Controls/FlowLayout.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 INCLUDED_FLOW_LAYOUT_H
+#define INCLUDED_FLOW_LAYOUT_H 1
+
+//==============================================================================
+//	Includes
+//==============================================================================
+#include "Control.h"
+#include "BlankControl.h"
+
+//==============================================================================
+//	Classes
+//==============================================================================
+
+//==============================================================================
+/**
+*	@class	CFlowLayout
+*	@brief	CHRIS.EDWARDS needs to enter a brief description here.
+*
+*	CHRIS.EDWARDS needs to enter a long description here.
+*/
+class CFlowLayout : public CControl
+{
+public:
+    enum EFlowDirection {
+        FLOW_VERTICAL,
+        FLOW_HORIZONTAL,
+    };
+
+    enum EVerticalAlignment {
+        ALIGN_TOP,
+        ALIGN_BOTTOM,
+        ALIGN_CENTER,
+        ALIGN_VERT_NEITHER,
+    };
+
+    enum EHorizontalAlignment {
+        ALIGN_LEFT,
+        ALIGN_RIGHT,
+        ALIGN_MIDDLE,
+        ALIGN_HORIZ_NEITHER,
+    };
+
+    CFlowLayout(CControl *inControl = nullptr, bool inUseControl = true);
+    virtual ~CFlowLayout();
+
+    DEFINE_OBJECT_COUNTER(CFlowLayout)
+
+    void SetSize(CPt inSize) override;
+    void SetLayout(CPt inSize, CPt inPosition) override;
+    void OnParentChanged(CControl *inParent) override;
+
+    void SetAlignment(EVerticalAlignment inVertical, EHorizontalAlignment inHorizontal);
+    long SetLeftMargin(long inMargin);
+    long GetLeftMargin() const;
+    long SetRightMargin(long inMargin);
+    long GetRightMargin() const;
+    long SetTopMargin(long inMargin);
+    long GetTopMargin() const;
+    long SetBottomMargin(long inMargin);
+    long GetBottomMargin() const;
+    long SetGapBetweenChildren(long inGap);
+    void SetDebug(bool inFlag) { m_DebugFlag = inFlag; }
+    void SetAutoMin(bool inFlag) { m_AutoMin = inFlag; }
+
+    virtual void SetFlowDirection(EFlowDirection inFlowDirection);
+    void AddChild(CControl *inControl, CControl *inInsertBefore = nullptr) override;
+    void RemoveChild(CControl *inControl) override;
+    void Draw(CRenderer *inRenderer) override;
+    virtual void DisableBlank();
+    void OnChildSizeChanged(CControl *inControl) override;
+
+    virtual void RecalcLayout();
+    void SuspendRecalcLayout(bool inSuspendFlag);
+    void ResetMinMaxPref() override;
+    bool OnMouseDown(CPt inPoint, Qt::KeyboardModifiers inFlags) override;
+    bool OnMouseRDown(CPt inPoint, Qt::KeyboardModifiers inFlags) override;
+
+protected:
+    CPt GetTotalPreferredSizes();
+    void ResizeExpandableControlsY(long inExtraSpace, long inNumExpandable);
+    void ResizeExpandableControlsX(long inExtraSpace, long inNumExpandable);
+    void ResetChildPositions();
+    void DistributeRemaining(long inExtraSpace);
+    void RecalcChild(CControl *inChild, CPt &ioPosition, long &ioNumExpandableX,
+                     long &ioNumExpandableY);
+
+    bool m_HasUnusedSpace;
+    bool m_BlankDisable;
+    EFlowDirection m_FlowDirection;
+    EVerticalAlignment m_VerticalAlignment;
+    EHorizontalAlignment m_HorizontalAlignment;
+    bool m_ResizingChildren;
+    long m_LeftMargin; ///< gap at left of this control
+    long m_RightMargin; ///< gap at right of this control
+    long m_TopMargin; ///< gap at top of this control
+    long m_BottomMargin; ///< gap at bottom of this control
+    long m_ChildGap; ///< gap between each child control when laying out everything
+    bool m_DebugFlag;
+    bool m_AutoMin;
+
+    bool m_SuspendRecalcLayout; ///< flag to suspend recalculation of the layout; slow down is
+                                ///noticeable if this control has many children
+
+private:
+    CControl *m_BlankControl; ///< used when all items are at their max and there si still space
+};
+
+#endif // INCLUDED_FLOW_LAYOUT_H