TXlsFile.ShowGridHeadings Property
True is the column headings ("A", "B", etc) and row headings ("1", "2", etc) are shown. You can also set this option with TExcelFile.SheetOptions by changing TSheetOptions.ShowRowAndColumnHeaders This property can work in different windows depending on the value of TExcelFile.ActiveWindow
Syntax
Unit: FlexCel.XlsAdapter
property TXlsFile.ShowGridHeadings: Boolean