Method XbpListBox():getData() Foundation
Returns the selected items in the list box.
:getData() --> aItemPos
This method returns an array containing the numeric indexes of the items selected in the list box. If no items are marked, an empty array is returned.
The method :getData() returns the items that are currently marked in the list of the XbpListBox object. The numeric indexes of all items marked are returned in an array. If a code block is contained in the instance variable :dataLink, this data code block is executed and the array is passed as an argument.
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