Re: file open

"emanshu, Munish Nayyar" <munish.nr@xxxxxxxxx> wrote:

> 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..

Basically, you cannot. All you can know is whether _you_ can open this
file. If you cannot, C has no way to tell the difference between a file
that is opened by someone else, a file that you have no rights to, or a
filename that is invalid. Trying to reliably tell the difference would
be hard anyway, on most systems.

Richard
.

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