@Thomas
Nonsense. Cymric is right.
From dos/Open autodoc:
"The named file is opened and a file handle returned. If the accessMode is MODE_OLDFILE, an existing file is opened for reading or writing. If the value is MODE_NEWFILE, a new file is created for writing. MODE_READWRITE opens a file with an shared lock, but creates it if it didn't exist."
(bold mine)
However, in this particular case MODE_READWRITE is better, as it will create the file if it doesn't exist. So in the end you're partially right too (but writing is perfectly ok to MODE_OLDFILE, too!).
