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This value is often of use in accessing data. For example, if you want to replace existing data in a column referenced by a control with a user-supplied string to each data item, you could use the POS property to find the position of the associated column in the data table, then write the new data to the data table.
See Also
PART property, ID property, MV property, TYPE property
Example
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function KeyControls(Window) * returns an @fm-delimited list of key controls declare function Get_Property * get list of all controls CtrlList = Get_Property(Window, "CTRLMAP") convert @fm to @rm in CtrlList * get field positions of all controls PosList = Get_Property(CtrlList, str("POS": @rm, | count(CtrlList, @rm)): "POS") * build list of keys KeyList = "" loop locate "0" in PosList using @rm setting Pos else Pos = 0 while Pos KeyList<-1> = field(CtrlList, @rm, Pos) PosList = field(PosList, @rm, Pos+1, 999) ; * create new PosList CtrlList = field(CtrlList, @rm, Pos+1, 999) ; * create new CtrlList repeat return KeyList |