You could check the status of the activeworkbook after opening:

?oExcel.ActiveWorkbook.Readonly

or before opening:

?oExcel.Workbooks.CanCheckout(fullpath(file_name))


Though I do not know how to get the user name by whom the file is locked.


>Not sure what you mean. I am using the following code..
>
>oExcel = CREATEOBJECT("Excel.Application")
>oExcel.Visible = .T.
>oBook = oExcel.Workbooks.FOPEN(xlFile)
>oSheet = oBook.ActiveSheet
>
>and it will allow me to open it and write to it even though it is ReadOnly. I want to prevent this from opening until someone else is done using it.