diff --git a/Core/Code/Interactions/mitkInteractionEventConst.cpp b/Core/Code/Interactions/mitkInteractionEventConst.cpp
index 810d1377af..4dbee6047d 100644
--- a/Core/Code/Interactions/mitkInteractionEventConst.cpp
+++ b/Core/Code/Interactions/mitkInteractionEventConst.cpp
@@ -1,107 +1,125 @@
 /*===================================================================
 
  The Medical Imaging Interaction Toolkit (MITK)
 
  Copyright (c) German Cancer Research Center,
  Division of Medical and Biological Informatics.
  All rights reserved.
 
  This software is distributed WITHOUT ANY WARRANTY; without
  even the implied warranty of MERCHANTABILITY or FITNESS FOR
  A PARTICULAR PURPOSE.
 
  See LICENSE.txt or http://www.mitk.org for details.
 
  ===================================================================*/
 
 #include "mitkInteractionEventConst.h"
 
 namespace mitk {
 
 const std::string InteractionEventConst::xmlTagConfigRoot()
 {
   static const std::string xmlTagConfigRoot = "config";
   return xmlTagConfigRoot;
 }
 
 const std::string InteractionEventConst::xmlTagParam()
 {
   static const std::string xmlTagParam = "param";
   return xmlTagParam;
 
 }
 
 const std::string InteractionEventConst::xmlTagEventVariant()
 {
   static const std::string xmlTagEventVariant = "event_variant";
   return xmlTagEventVariant;
 }
 
 const std::string InteractionEventConst::xmlTagAttribute()
 {
   static const std::string xmlTagAttribute = "attribute";
   return xmlTagAttribute;
 }
 
 const std::string InteractionEventConst::xmlParameterName()
 {
   static const std::string xmlParameterName = "name";
   return xmlParameterName;
 }
 
 const std::string InteractionEventConst::xmlParameterValue()
 {
   static const std::string xmlParameterValue = "value";
   return xmlParameterValue;
 }
 
 const std::string InteractionEventConst::xmlParameterEventVariant()
 {
   static const std::string xmlParameterEventVariant = "event_variant";
   return xmlParameterEventVariant;
 }
 
 const std::string InteractionEventConst::xmlParameterEventClass()
 {
   static const std::string xmlParameterEventClass = "class";
   return xmlParameterEventClass;
 }
 
 const std::string InteractionEventConst::xmlEventPropertyModifier()
 {
   static const std::string xmlEventPropertyModifier = "Modifiers";
   return xmlEventPropertyModifier;
 }
 
 const std::string InteractionEventConst::xmlEventPropertyEventButton()
 {
   static const std::string xmlEventPropertyEventButton = "EventButton";
   return xmlEventPropertyEventButton;
 }
 
 const std::string InteractionEventConst::xmlEventPropertyButtonState()
 {
   static const std::string xmlEventPropertyButtonState = "ButtonState";
   return xmlEventPropertyButtonState;
 }
 
+const std::string InteractionEventConst::xmlEventPropertyPositionInWorld()
+{
+  static const std::string xmlEventPropertyPosition = "PositionInWorld";
+  return xmlEventPropertyPosition;
+}
+
+const std::string InteractionEventConst::xmlEventPropertyPositionOnScreen()
+{
+  static const std::string xmlEventPropertyPosition = "PositionOnScreen";
+  return xmlEventPropertyPosition;
+}
+
 const std::string InteractionEventConst::xmlEventPropertyKey()
 {
   static const std::string xmlEventPropertyKey = "Key";
   return xmlEventPropertyKey;
 }
 
 const std::string InteractionEventConst::xmlEventPropertyScrollDirection()
 {
   static const std::string xmlEventPropertyScrollDirection = "ScrollDirection";
   return xmlEventPropertyScrollDirection;
 }
 
+const std::string InteractionEventConst::xmlEventPropertyWheelDelta()
+{
+  static const std::string xmlEventPropertyWheelDelta = "WheelDelta";
+  return xmlEventPropertyWheelDelta;
+}
+
 const std::string InteractionEventConst::xmlEventPropertySignalName()
 {
   static const std::string xmlEventPropertySignalName = "SignalName";
   return xmlEventPropertySignalName;
 }
 
 
 }
diff --git a/Core/Code/Interactions/mitkInteractionEventConst.h b/Core/Code/Interactions/mitkInteractionEventConst.h
index fea72b994c..1361b27eab 100644
--- a/Core/Code/Interactions/mitkInteractionEventConst.h
+++ b/Core/Code/Interactions/mitkInteractionEventConst.h
@@ -1,53 +1,56 @@
 /*===================================================================
 
  The Medical Imaging Interaction Toolkit (MITK)
 
  Copyright (c) German Cancer Research Center,
  Division of Medical and Biological Informatics.
  All rights reserved.
 
  This software is distributed WITHOUT ANY WARRANTY; without
  even the implied warranty of MERCHANTABILITY or FITNESS FOR
  A PARTICULAR PURPOSE.
 
  See LICENSE.txt or http://www.mitk.org for details.
 
  ===================================================================*/
 
 #ifndef MITKINTERACTEVENTCONST_H
 #define MITKINTERACTEVENTCONST_H
 
 #include <string>
 #include <MitkExports.h>
 
 namespace mitk
 {
 
 /**
  * @brief Constants to describe Mouse Events and special Key Events.
  */
 struct MITK_CORE_EXPORT InteractionEventConst
 {
   // XML Tags
   static const std::string xmlTagConfigRoot(); // = "config";
   static const std::string xmlTagParam(); // = "param";
   static const std::string xmlTagEventVariant(); // = "event_variant";
   static const std::string xmlTagAttribute(); // = "attribute";
 
   // XML Param
   static const std::string xmlParameterName(); // = "name";
   static const std::string xmlParameterValue(); // = "value";
   static const std::string xmlParameterEventVariant(); // = "event_variant";
   static const std::string xmlParameterEventClass(); // = "class";
 
   // Event Description
   static const std::string xmlEventPropertyModifier(); // = "Modifiers";
   static const std::string xmlEventPropertyEventButton(); // = "EventButton";
   static const std::string xmlEventPropertyButtonState(); // = "ButtonState";
+  static const std::string xmlEventPropertyPositionInWorld(); // = "PositionInWorld";
+  static const std::string xmlEventPropertyPositionOnScreen(); // = "PositionOnScreen";
   static const std::string xmlEventPropertyKey(); // = "Key";
   static const std::string xmlEventPropertyScrollDirection(); // = "ScrollDirection";
+  static const std::string xmlEventPropertyWheelDelta(); // = "WheelDelta";
   static const std::string xmlEventPropertySignalName(); // = "SignalName";
 };
 
 }     //namespace mitk
 #endif //ifndef MITKINTERACTEVENTCONST_H