Is there an API function to determine if a string would make a valid file
name?

Mike T.

Mike,

How about trying to create it (or open it if it exists) using
CreateFile? If the string contains an invalid filename, CreateFile
will surely fail.

Mattias

____________________________________________

    http://hem.spray.se/mattias.sjogren/

No need for an API, since VB's built-in DIR{} function will do this for you.
Try this:

filename = "C:\CONFIG.SYS"
if DIR(filename) = "" then
    'file doesn't exist.
else
    'file does exist
    'continue processing
endif