I'm trying to open a text file for reading in a Delphi 7 app, but am getting I/O error 32 (sharing violation) because another application already has the file open. I've tried setting FileMode to "fmOpenRead or fmShareDenyNone" but now realise this doesn't apply to text files anyway.

Is there a way of reading text files that are open by another application?

var
  f: TextFile;
begin
  FileMode := fmOpenRead or fmShareDenyNone;   // FileMode IS NOT APPLICABLE TO TEXT FILES!!
  AssignFile(f, FileName);
  Reset(f);