diff -r b4583cb86f18 -r 2df3d31d8059 DataTypeEditor.py
--- a/DataTypeEditor.py	Wed Jan 14 19:47:06 2009 +0100
+++ b/DataTypeEditor.py	Fri Jan 16 13:22:07 2009 +0100
@@ -350,10 +350,10 @@
               label='Derivation Type:', name='staticText1', parent=self,
               pos=wx.Point(0, 0), size=wx.Size(150, 17), style=0)
 
-        self.DerivationType = wx.Choice(id=ID_DATATYPEEDITORDERIVATIONTYPE,
+        self.DerivationType = wx.ComboBox(id=ID_DATATYPEEDITORDERIVATIONTYPE,
               name='DerivationType', parent=self, pos=wx.Point(0, 0),
-              size=wx.Size(200, 24), style=0)
-        self.Bind(wx.EVT_CHOICE, self.OnDerivationTypeChanged, id=ID_DATATYPEEDITORDERIVATIONTYPE)
+              size=wx.Size(200, 24), style=wx.CB_READONLY)
+        self.Bind(wx.EVT_COMBOBOX, self.OnDerivationTypeChanged, id=ID_DATATYPEEDITORDERIVATIONTYPE)
 
         # Panel for Directly derived data types
 
@@ -365,10 +365,10 @@
               label='Base Type:', name='staticText2', parent=self.DirectlyPanel,
               pos=wx.Point(0, 0), size=wx.Size(150, 17), style=0)
 
-        self.DirectlyBaseType = wx.Choice(id=ID_DATATYPEEDITORDIRECTLYBASETYPE, 
+        self.DirectlyBaseType = wx.ComboBox(id=ID_DATATYPEEDITORDIRECTLYBASETYPE, 
               name='DirectlyBaseType', parent=self.DirectlyPanel, pos=wx.Point(0, 0),
-              size=wx.Size(0, 24), style=wx.TAB_TRAVERSAL)
-        self.Bind(wx.EVT_CHOICE, self.OnInfosChanged, id=ID_DATATYPEEDITORDIRECTLYBASETYPE)
+              size=wx.Size(0, 24), style=wx.CB_READONLY)
+        self.Bind(wx.EVT_COMBOBOX, self.OnInfosChanged, id=ID_DATATYPEEDITORDIRECTLYBASETYPE)
 
         self.staticText3 = wx.StaticText(id=ID_DATATYPEEDITORSTATICTEXT3,
               label='Initial Value:', name='staticText3', parent=self.DirectlyPanel,
@@ -389,10 +389,10 @@
               label='Base Type:', name='staticText4', parent=self.SubrangePanel,
               pos=wx.Point(0, 0), size=wx.Size(150, 17), style=0)
 
-        self.SubrangeBaseType = wx.Choice(id=ID_DATATYPEEDITORSUBRANGEBASETYPE, 
+        self.SubrangeBaseType = wx.ComboBox(id=ID_DATATYPEEDITORSUBRANGEBASETYPE, 
               name='SubrangeBaseType', parent=self.SubrangePanel, pos=wx.Point(0, 0),
-              size=wx.Size(0, 24), style=wx.TAB_TRAVERSAL)
-        self.Bind(wx.EVT_CHOICE, self.OnSubrangeBaseTypeChanged, id=ID_DATATYPEEDITORSUBRANGEBASETYPE)
+              size=wx.Size(0, 24), style=wx.CB_READONLY)
+        self.Bind(wx.EVT_COMBOBOX, self.OnSubrangeBaseTypeChanged, id=ID_DATATYPEEDITORSUBRANGEBASETYPE)
 
         self.staticText5 = wx.StaticText(id=ID_DATATYPEEDITORSTATICTEXT5,
               label='Initial Value:', name='staticText5', parent=self.SubrangePanel,
@@ -440,10 +440,10 @@
               label='Initial Value:', name='staticText8', parent=self.EnumeratedPanel,
               pos=wx.Point(0, 0), size=wx.Size(150, 17), style=0)
 
-        self.EnumeratedInitialValue = wx.Choice(id=ID_DATATYPEEDITORENUMERATEDINITIALVALUE, 
+        self.EnumeratedInitialValue = wx.ComboBox(id=ID_DATATYPEEDITORENUMERATEDINITIALVALUE, 
               name='EnumeratedInitialValue', parent=self.EnumeratedPanel, pos=wx.Point(0, 0),
-              size=wx.Size(0, 24), style=wx.TAB_TRAVERSAL|wx.TE_PROCESS_ENTER)
-        self.Bind(wx.EVT_CHOICE, self.OnInfosChanged, id=ID_DATATYPEEDITORENUMERATEDINITIALVALUE)
+              size=wx.Size(0, 24), style=wx.CB_READONLY)
+        self.Bind(wx.EVT_COMBOBOX, self.OnInfosChanged, id=ID_DATATYPEEDITORENUMERATEDINITIALVALUE)
         
         # Panel for Array data types
 
@@ -455,10 +455,10 @@
               label='Base Type:', name='staticText9', parent=self.ArrayPanel,
               pos=wx.Point(0, 0), size=wx.Size(150, 17), style=0)
 
-        self.ArrayBaseType = wx.Choice(id=ID_DATATYPEEDITORARRAYBASETYPE, 
+        self.ArrayBaseType = wx.ComboBox(id=ID_DATATYPEEDITORARRAYBASETYPE, 
               name='SubrangeBaseType', parent=self.ArrayPanel, pos=wx.Point(0, 0),
-              size=wx.Size(0, 24), style=wx.TAB_TRAVERSAL)
-        self.Bind(wx.EVT_CHOICE, self.OnInfosChanged, id=ID_DATATYPEEDITORARRAYBASETYPE)
+              size=wx.Size(0, 24), style=wx.CB_READONLY)
+        self.Bind(wx.EVT_COMBOBOX, self.OnInfosChanged, id=ID_DATATYPEEDITORARRAYBASETYPE)
 
         self.ArrayDimensions = wx.gizmos.EditableListBox(id=ID_DATATYPEEDITORARRAYDIMENSIONS, 
               name='ArrayDimensions', parent=self.ArrayPanel, label="Dimensions:", pos=wx.Point(0, 0),