file open

HI all,

I an designing an application in C++. i want to open file requested by
end user but i want to reflect an error to user if file is already
opened by some other application..
will anybody tell me that how to know that the file is already open or
closed..

any help is highly appreciated...

thanks,
Munish Nayyar
emanshu "IM"

munish.nr@gmail.com wrote:
> HI all,
>
> I an designing an application in C++. i want to open file requested by
> end user but i want to reflect an error to user if file is already
> opened by some other application..
> will anybody tell me that how to know that the file is already open or
> closed..
>

Hi,

open the file exclusive. It's a bit/enum/ whatever. Documented in C++
iostream or any of this sort of classes. Reading the man pages or a book
definitly helps.


BR
Hans-Juergen Lange