diff --git a/demo/Grid_MegaExample.py b/demo/Grid_MegaExample.py
index f37629d8..e1485c97 100644
--- a/demo/Grid_MegaExample.py
+++ b/demo/Grid_MegaExample.py
@@ -67,7 +67,6 @@ class MegaTable(Grid.GridTableBase):
             elif new > current:
                 msg = Grid.GridTableMessage(self,addmsg,new-current)
                 grid.ProcessTableMessage(msg)
-                self.UpdateValues(grid)
 
         grid.EndBatch()
 
@@ -80,13 +79,6 @@ class MegaTable(Grid.GridTableBase):
         grid.AdjustScrollbars()
         grid.ForceRefresh()
 
-
-    def UpdateValues(self, grid):
-        """Update all displayed values"""
-        # This sends an event to the grid table to update all of the values
-        msg = Grid.GridTableMessage(self, Grid.GRIDTABLE_REQUEST_VIEW_GET_VALUES)
-        grid.ProcessTableMessage(msg)
-
     def _updateColAttrs(self, grid):
         """
         wx.Grid -> update the column attributes to add the
diff --git a/etg/grid.py b/etg/grid.py
index 5eafe696..8d3a5c23 100644
--- a/etg/grid.py
+++ b/etg/grid.py
@@ -95,6 +95,13 @@ def run():
         GRID_VALUE_DATETIME =  "datetime"
         """)
 
+    # Add compatibility constants for these since they've been removed from wxWidgets
+    # TODO: Remove these in a future release.
+    module.addPyCode("""\
+        GRIDTABLE_REQUEST_VIEW_GET_VALUES = 2000
+        GRIDTABLE_REQUEST_VIEW_SEND_VALUES = 2001
+        """)
+
     module.insertItem(0, etgtools.TypedefDef(type='wxWindow', name='wxGridWindow'))
 
     #-----------------------------------------------------------------