I'm doing some work on an application to aid in the mass update of various datawindow attributes. It's not rocket science since you are dealing with a series of text files and doing some basic 'find and replace' operations. However, if you have ever worked on a project which has been around for a while you will notice that datawindows do not get 'migrated' when you upgrade to a newer version of PowerBuilder; the export syntax remains at the version in which the thing was last modified and saved.
Now you might think that using the LibraryExport and LibraryImport methods will do the trick but you would be mistaken. A newly imported datawindow object keeps the same version as when it was exported.
To accomplish the task you need to use the datawindow CREATE method.
integer li_file, li string ls_old_syntax, ls_importsyntax // old datawindow syntax saved to a file ls_old_syntax = 'C:\temp\d_oldstuff.txt' // open and read the file li_file = Fileopen(ls_old_syntax, TextMode!) Filereadex(li_file, ls_importsyntax) // remember to close the file FileClose(li_file) // check version of ls_importsyntax IF POS(ls_importsyntax, 'release 12.5;') > 1 THEN // its already new, leave it alone ELSE // dw_new is object on the window dw_new.reset() dw_new.dataobject = '' // create the new datawindow object from the old syntax li = dw_new.create(ls_importsyntax, ls_err) // now get the new syntax ls_new_syntax = dw_new.describe("DataWindow.Syntax") END IF
Now you can do whatever you want with the new syntax.