--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Samples/Qt/QStoneOpenGlWidget.h	Fri Jul 19 15:15:13 2019 +0200
@@ -0,0 +1,90 @@
+#pragma once
+#include "../../Framework/OpenGL/OpenGLIncludes.h"
+#include <QOpenGLWidget>
+#include <QOpenGLFunctions>
+#include <QOpenGLContext>
+
+#include <boost/shared_ptr.hpp>
+#include "../../Framework/OpenGL/IOpenGLContext.h"
+#include "../../Framework/Scene2D/OpenGLCompositor.h"
+#include "../../Framework/Viewport/ViewportBase.h"
+#include "../../Applications/Generic/Scene2DInteractor.h"
+
+namespace OrthancStone
+{
+  class QStoneOpenGlWidget :
+      public QOpenGLWidget,
+      public OpenGL::IOpenGLContext,
+      public ViewportBase
+  {
+    std::unique_ptr<OrthancStone::OpenGLCompositor> compositor_;
+    boost::shared_ptr<Scene2DInteractor> sceneInteractor_;
+    QOpenGLContext                        openGlContext_;
+
+  public:
+    QStoneOpenGlWidget(QWidget *parent) :
+      QOpenGLWidget(parent),
+      ViewportBase("QtStoneOpenGlWidget")  // TODO: we shall be able to define a name but construction time is too early !
+    {
+      setFocusPolicy(Qt::StrongFocus);  // to enable keyPressEvent
+      setMouseTracking(true);           // to enable mouseMoveEvent event when no button is pressed
+    }
+
+    void Init()
+    {
+      QSurfaceFormat requestedFormat;
+      requestedFormat.setVersion( 2, 0 );
+      openGlContext_.setFormat( requestedFormat );
+      openGlContext_.create();
+      openGlContext_.makeCurrent(context()->surface());
+
+      compositor_.reset(new OpenGLCompositor(*this, GetScene()));
+    }
+
+  protected:
+
+    //**** QWidget overrides
+    void initializeGL() override;
+    void resizeGL(int w, int h) override;
+    void paintGL() override;
+
+    void mousePressEvent(QMouseEvent* event) override;
+    void mouseMoveEvent(QMouseEvent* event) override;
+    void mouseReleaseEvent(QMouseEvent* event) override;
+    void keyPressEvent(QKeyEvent* event) override;
+    void keyReleaseEvent(QKeyEvent *event) override;
+    void wheelEvent(QWheelEvent* event) override;
+
+    //**** IOpenGLContext overrides
+
+    virtual void MakeCurrent() override;
+    virtual void SwapBuffer() override {}
+
+    virtual unsigned int GetCanvasWidth() const override
+    {
+      return this->width();
+    }
+
+    virtual unsigned int GetCanvasHeight() const override
+    {
+      return this->height();
+    }
+
+  public:
+
+    void SetInteractor(boost::shared_ptr<Scene2DInteractor> sceneInteractor)
+    {
+      sceneInteractor_ = sceneInteractor;
+    }
+
+    virtual ICompositor& GetCompositor()
+    {
+      return *compositor_;
+    }
+
+  protected:
+    void mouseEvent(QMouseEvent* qtEvent, OrthancStone::GuiAdapterHidEventType guiEventType);
+    bool keyEvent(QKeyEvent* qtEvent, OrthancStone::GuiAdapterHidEventType guiEventType);
+
+  };
+}