In v18 R4, there are now two ways to control movable rows in an array based listbox which can be done either from the listbox property menu or programmatically. Take a look at the examples below:

Listbox property menu:


Programatically:

LISTBOX SET PROPERTY(*;"List Box";lk movable rows;True)

Likewise, a boolean value can also be obtained to check whether the listbox rows are movable as shown below:

C_BOOLEAN($isMovable_b) $isMovable_b:=LISTBOX Get property(*;"List Box";lk movable rows)