opened file

[Piotr]

How to check if file has already opened by another process ?
thx

 

[Mike Wahler]

How to check if file has already opened by another process ?

You use some platform-specific method. Cannot be done
with standard C++, which has no notion of 'process'.

The only thing which can be determined about opening a file
in standard C++ is, was the file opened successfully or not.
The *reason* for a failed open (which could be any of a
variety of reasons, e.g. file does not exist, locked by
another process, insufficient user 'permission', etc.) cannot
be determined with standard C++.

Consult your platform and/or implementation documentation.


-Mike