cObject
---cUIObject
------DfBaseObject
---------DfBaseWindow
------------DfBaseUIWindow
---------------DfBaseControl
------------------DfBaseList
---------------------DfBaseForm
------------------------DfBaseEntry
---------------------------DfBaseComboBoxEntry
------------------------------ComboEntry
---------------------------------dbBasicComboForm_
------------------------------------dbBasicComboForm
---------------------------------------dbDataComboForm
------------------------------------------dbComboFormDS
---------------------------------------------dbCodeComboForm
---------------------------------------------dbComboFormDD_
dbComboFormDS is used to provide combo objects that automatically use a central codes database table. Its sub-classes dbComboForm and dbCodeComboForm should be used for sub-classing and instantiation.