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diff --git a/src/Runtime/ogl-runtime/src/dm/systems/Qt3DSDMGuides.h b/src/Runtime/ogl-runtime/src/dm/systems/Qt3DSDMGuides.h
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+/****************************************************************************
+**
+** Copyright (C) 1993-2009 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.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#pragma once
+#ifndef QT3DSDM_GUIDES_H
+#define QT3DSDM_GUIDES_H
+#include "Qt3DSDMDataTypes.h"
+#include "foundation/Qt3DSSimpleTypes.h"
+#include "Qt3DSDMSignals.h"
+#include "Qt3DSDMHandles.h"
+#include "Qt3DSDMTransactions.h"
+#include <functional>
+
+namespace qt3dsdm {
+struct GuideDirections
+{
+    enum Enum {
+        UnknownDirection = 0,
+        Vertical,
+        Horizontal,
+    };
+};
+
+struct SGuideInfo
+{
+    qt3ds::QT3DSF32 m_Position;
+    GuideDirections::Enum m_Direction;
+    qt3ds::QT3DSI32 m_Width;
+    SGuideInfo(qt3ds::QT3DSF32 pos = 0.0f, GuideDirections::Enum dir = GuideDirections::UnknownDirection,
+               qt3ds::QT3DSI32 width = 1)
+        : m_Position(pos)
+        , m_Direction(dir)
+        , m_Width(width)
+    {
+    }
+};
+
+class IGuideSystem : public ITransactionProducer
+{
+protected:
+    virtual ~IGuideSystem() {}
+public:
+    friend class std::shared_ptr<IGuideSystem>;
+
+    virtual Qt3DSDMGuideHandle CreateGuide() = 0;
+    virtual void SetGuideInfo(Qt3DSDMGuideHandle inGuideHandle, const SGuideInfo &info) = 0;
+    virtual SGuideInfo GetGuideInfo(Qt3DSDMGuideHandle inGuideHandle) const = 0;
+    virtual void DeleteGuide(Qt3DSDMGuideHandle inGuideHandle) = 0;
+    virtual TGuideHandleList GetAllGuides() const = 0;
+    virtual bool IsGuideValid(Qt3DSDMGuideHandle inGuideHandle) const = 0;
+    // No real effect on datamodel because you can still create guides when they are locked.
+    // Just used in the UI.
+    virtual bool AreGuidesEditable() const = 0;
+    virtual void SetGuidesEditable(bool val) = 0;
+
+    // Undo/Redo
+    void SetConsumer(std::shared_ptr<ITransactionConsumer> inConsumer) override = 0;
+
+    // These are events coming from undo/redo operations, not events coming directly from the
+    // modification of the guides
+    virtual TSignalConnectionPtr
+    ConnectGuideCreated(const std::function<void(Qt3DSDMGuideHandle, SGuideInfo)> &inCallback) = 0;
+    virtual TSignalConnectionPtr ConnectGuideDestroyed(
+        const std::function<void(Qt3DSDMGuideHandle, SGuideInfo)> &inCallback) = 0;
+    virtual TSignalConnectionPtr ConnectGuideModified(
+        const std::function<void(Qt3DSDMGuideHandle, SGuideInfo)> &inCallback) = 0;
+
+    // Signal happens immediately instead of on undo/redo, used for live-update of the inspector
+    // palette
+    virtual TSignalConnectionPtr ConnectGuideModifiedImmediate(
+        const std::function<void(Qt3DSDMGuideHandle, SGuideInfo)> &inCallback) = 0;
+
+    static std::shared_ptr<IGuideSystem> CreateGuideSystem();
+};
+}
+
+#endif