how to check if a file is writable? (other then actually writing to it)

[orbs]

unfortunate fact: if you FileOpen() a file for read or write, the return code may well be a valid handle even if the file is not readable or writable (no permissions, encrypted, locked, etc.)

in this case, you get an error only when you go on to the actual FileRead/FileWrite operation.

so, i'm testing if a file is actually readable like this:

Func _FileReadable($sFile)
    If FileGetSize($sFile)=0 Then Return True
    Local $hFile = FileOpen($sFile, 16)
    FileRead($hFile, 1)
    Local $nError = @error
    FileClose($hFile)
    Return ($nError = 0)
EndFunc

now i'm trying to determine if a file is writable, but doing it in a similar method - i.e. add a character, and remove it - implies changing the file (timestamp and audit trail), which i'm reluctant about.

can someone suggest a reliable, non-intrusive method to check if a file is writable?

thanks for any hints.

[Melba23]

orbs,

A quick search found this thread which looks as if it could be what you need.

M23

[orbs]

thanks Melba23, that seems to do the trick! i'll put it to use and see how it goes.

[Melba23]

orbs,

Glad I could help.

And the "Search" box is at top-right if you have not yet noticed it.

M23