--- a/controls/DurationCellEditor.py	Sun Jan 08 18:22:43 2012 +0100
+++ b/controls/DurationCellEditor.py	Sun Jan 08 18:23:55 2012 +0100
@@ -94,7 +94,7 @@
 
     def OnDurationChar(self, event):
         keycode = event.GetKeyCode()
-        if keycode == wx.WXK_RETURN or keycode == wx.WXK_TAB:
+        if keycode in [wx.WXK_RETURN, wx.WXK_TAB, wx.WXK_ESCAPE]:
             self.Parent.Parent.ProcessEvent(event)
             self.Parent.Parent.SetFocus()
         else: