void AppendEnumItem(FieldInfo info)
 {
     if (info.Name.Equals ("value__"))
         return;
     if (fieldsToHide.Contains (info.GetValue (null)))
         return;
     string item = UseShortTitle ? info.GetShortTitle () : info.GetEnumTitle ();
     comboListStore.AppendValues (item, info.GetValue (null));
 }