File locking is impossible in Windows?

[elbertlev at hotmail.com]

I just have written the program in "C", which does the same. It behaves
almost the way you described.

Tthe copy command gives such diagnostic:

The process cannot access the file because
another process has locked a portion of the file.
0 file(s) copied.

BUT THE FILE IS ACTUALLY OVERWRITTEN..

I'm posting this question on MS newsgroup
microsoft.public.win32.programmer.kernel