How to be sure a file is free to be accessed?

[daft]

When a program generates a beg text file, which we want in turn to read, how to know for sure, that the writing's been finished?

[Trond]

Code: Select all

If ReadFile(0, "Filename")
  ; File opened for reading
Else
  ; File not opened for reading. Either it doesn't exist, or another program is using it
EndIf