[Gambas-user] bespoke ComboBox

[KKing]

In MS Access you could set a DropDown/Combobox control so the collapsed 
view showed a single column value e.g. a Customer Code but when expanded 
the list portion could be much wider than the collapsed ComboBox width. 
In the List portion additional columns of data could be presented e.g. 
Customer Name, Address, Postcode or ilk. Does something exist like that 
in Gambas already or could be readily easily achieved by "inheritance" 
off existing Gambas ListBox + maybe ComboBox or more likely bespoke 
TextBox + Button?