Index: src/samples/Level1/Animation/animation.py
===================================================================
--- src/samples/Level1/Animation/animation.py	(revision 772)
+++ src/samples/Level1/Animation/animation.py	(working copy)
@@ -22,8 +22,10 @@
 from OCC.TopLoc import *
 from OCC.AIS import *
 
-from OCC.Display.SimpleGui import display, start_display, add_function_to_menu, add_menu
 
+from OCC.Display.SimpleGui import *
+display, start_display, add_menu, add_function_to_menu = init_display()
+
 ais_boxshp=None
 
 def build_shape():
Index: src/samples/Level1/TopologyOperations/topology_operations.py
===================================================================
--- src/samples/Level1/TopologyOperations/topology_operations.py	(revision 772)
+++ src/samples/Level1/TopologyOperations/topology_operations.py	(working copy)
@@ -28,7 +28,9 @@
 from OCC.TColgp import *
 
 import time, math, sys
-from OCC.Display.SimpleGui import display, start_display, add_function_to_menu, add_menu
+
+from OCC.Display.SimpleGui import *
+display, start_display, add_menu, add_function_to_menu = init_display()
     
 def common(event=None):
     # Create Box
Index: src/samples/Level1/FairCurve/faircurve.py
===================================================================
--- src/samples/Level1/FairCurve/faircurve.py	(revision 772)
+++ src/samples/Level1/FairCurve/faircurve.py	(working copy)
@@ -4,7 +4,9 @@
 from OCC.FairCurve import *
 
 from OCC.Utils.Construct import *
+
 from OCC.Display.SimpleGui import *
+display, start_display, add_menu, add_function_to_menu = init_display()
 from OCC.Utils.Construct import *
 
 import math, time
Index: src/samples/Level1/TopologyLocalOperations/topology_local_operations.py
===================================================================
--- src/samples/Level1/TopologyLocalOperations/topology_local_operations.py	(revision 772)
+++ src/samples/Level1/TopologyLocalOperations/topology_local_operations.py	(working copy)
@@ -25,7 +25,9 @@
 from OCC.TColgp import *
 
 import sys, time
-from OCC.Display.SimpleGui import display, start_display, add_function_to_menu, add_menu
+
+from OCC.Display.SimpleGui import *
+display, start_display, add_menu, add_function_to_menu = init_display()
     
 def extrusion(event=None):
     #
Index: src/samples/Level1/Geometry/surfaces.py
===================================================================
--- src/samples/Level1/Geometry/surfaces.py	(revision 772)
+++ src/samples/Level1/Geometry/surfaces.py	(working copy)
@@ -11,8 +11,10 @@
 from OCC.GeomAdaptor import *
 from OCC.TColgp import *
 
-from OCC.Display.SimpleGui import add_menu, add_function_to_menu, start_display
 
+from OCC.Display.SimpleGui import *
+display, start_display, add_menu, add_function_to_menu = init_display()
+
 def point_list_to_TColgp_Array1OfPnt(li):
     pts = TColgp_Array1OfPnt(0, len(li)-1)
     for n,i in enumerate(li):
Index: src/samples/Level1/Geometry/geomplate.py
===================================================================
--- src/samples/Level1/Geometry/geomplate.py	(revision 772)
+++ src/samples/Level1/Geometry/geomplate.py	(working copy)
@@ -28,7 +28,8 @@
 from OCC.BRep import *
 from OCC.ShapeAnalysis import *
 from OCC.GeomLProp import *
-from OCC.Display.SimpleGui import add_menu, add_function_to_menu, start_display
+from OCC.Display.SimpleGui import *
+display, start_display, add_menu, add_function_to_menu = init_display()
 import types, sys
 
 #===============================================================================
Index: src/samples/Level1/Mesh/simple_mesh.py
===================================================================
--- src/samples/Level1/Mesh/simple_mesh.py	(revision 772)
+++ src/samples/Level1/Mesh/simple_mesh.py	(working copy)
@@ -27,7 +27,8 @@
 from OCC.Poly import *
 from OCC.TColgp import *
 from OCC.gp import *
-from OCC.Display.SimpleGui import display
+from OCC.Display.SimpleGui import *
+display, start_display, add_menu, add_function_to_menu = init_display()
 
 
 def simple_mesh(event=None):    
Index: src/samples/Level1/Dimensions/dimensions.py
===================================================================
--- src/samples/Level1/Dimensions/dimensions.py	(revision 772)
+++ src/samples/Level1/Dimensions/dimensions.py	(working copy)
@@ -3,7 +3,9 @@
 from OCC.AIS import *
 from OCC.TCollection import TCollection_ExtendedString
 
+
 from OCC.Display.SimpleGui import *
+display, start_display, add_menu, add_function_to_menu = init_display()
 from OCC.BRepBuilderAPI import *
 
 def make_edge(*args):