tlbdropdowncols
tnolistdropdowncols
tdropdowncols
create
destroy
getitemclasstype
createfont
createfontselect
tdropdowndatacols
beginupdate
endupdate
clear
addrow
insertrow
deleterow
getrow
townedpersistentarrayprop
tpersistentarrayprop
itemdestroyed
assign
propkind
displayname
add
indexof
tarrayprop
insertempty
insertdefault
delete
move
order
reorder
link