selectedColumnIndexes An index set containing the indexes of the selected columns. Declarationvar selectedColumnIndexes: IndexSet { get } See AlsoSelecting Columns and RowsselectColumnIndexes(_:byExtendingSelection:)selectedColumndeselectColumn(_:)numberOfSelectedColumnsisColumnSelected(_:)selectRowIndexes(_:byExtendingSelection:)selectedRowselectedRowIndexesdeselectRow(_:)numberOfSelectedRowsisRowSelected(_:)selectAll(_:)deselectAll(_:)