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From: "Alexey V. Litvinov" <lialsoftlab@mail.ru>
Newsgroups: comp.lang.ada
Subject: problem with gnat.lock_files
Date: Sat, 30 Sep 2000 13:48:48 +1100
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Date: 2000-09-30T03:38:09+00:00

I have a trouble with GNAT.Lock_Files package.
when I try to lock file it constantly raises Lock_Error.
I'm sure that this file not opened by other program.
And wrote next piece of code to test:

with GNAT.Lock_Files; use GNAT.Lock_Files;
with Ada.Text_IO;     use Ada.Text_IO;

procedure Lock is
begin
   put_line("trying to lock...");
   Lock_File("c:\test.fl", 1.0, 3);
   put_line("locked.");
   UnLock_File("c:\test.fl");

exception
   when Lock_Error => 
      put_line("Unable to lock!");
   when others => 
      raise;
end;

after every run it gaves "Unable to lock!"
what I'm doing wrong?