Tab stop positions are not supported for the list box part of an XbpCombobox object.
Method XbpListBox():getTabstops() Foundation
Queries the tab stops of the listbox.
:getTabstops() --> anTabstops
This method returns a one dimensional array containing the numeric tab stop positions currently set for the listbox object.
The :getTabstops() method returns the tab stop positions of the listbox object that are specified with the method :setTabstops(). If no tabulator position is specified, the method returns an empty array.
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