--- a/Samples/Qt/Scene2DInteractor.h	Tue Jul 09 11:46:43 2019 +0200
+++ b/Samples/Qt/Scene2DInteractor.h	Tue Jul 09 14:34:56 2019 +0200
@@ -3,6 +3,7 @@
 #include "../../Framework/Scene2D/PointerEvent.h"
 #include "../../Framework/Scene2DViewport/ViewportController.h"
 #include "../../Framework/Scene2DViewport/IFlexiblePointerTracker.h"
+#include "../../Framework/Scene2D/Internals/CompositorHelper.h"
 #include "../../Applications/Generic/GuiAdapter.h"
 
 
@@ -12,19 +13,30 @@
   class Scene2DInteractor
   {
   protected:
-    boost::shared_ptr<ViewportController> viewportController_;
-    boost::shared_ptr<IFlexiblePointerTracker> currentTracker_;
+    boost::shared_ptr<ViewportController>       viewportController_;
+    boost::shared_ptr<IFlexiblePointerTracker>  currentTracker_;
+    boost::shared_ptr<ICompositor>              compositor_;
 
   public:
     Scene2DInteractor(boost::shared_ptr<ViewportController> viewportController) :
       viewportController_(viewportController)
     {}
 
-    virtual void OnMouseEvent(const GuiAdapterMouseEvent& guiEvent, const PointerEvent& pointerEvent) = 0;
+    void SetCompositor(boost::shared_ptr<ICompositor> compositor)
+    {
+      compositor_ = compositor;
+    }
+
+    virtual bool OnMouseEvent(const GuiAdapterMouseEvent& guiEvent, const PointerEvent& pointerEvent) = 0; // returns true if it has handled the event
+    virtual bool OnKeyboardEvent(const GuiAdapterKeyboardEvent& guiEvent) = 0; // returns true if it has handled the event
+    virtual bool OnWheelEvent(const GuiAdapterWheelEvent& guiEvent) = 0; // returns true if it has handled the event
 
   };
 }
 
+
+
+
 class BasicScene2DInteractor : public OrthancStone::Scene2DInteractor
 {
 public:
@@ -32,6 +44,8 @@
     Scene2DInteractor(viewportController)
   {}
 
-  virtual void OnMouseEvent(const OrthancStone::GuiAdapterMouseEvent& event, const OrthancStone::PointerEvent& pointerEvent) override;
+  virtual bool OnMouseEvent(const OrthancStone::GuiAdapterMouseEvent& event, const OrthancStone::PointerEvent& pointerEvent) override;
+  virtual bool OnKeyboardEvent(const OrthancStone::GuiAdapterKeyboardEvent& guiEvent);
+  virtual bool OnWheelEvent(const OrthancStone::GuiAdapterWheelEvent& guiEvent);
 };