File Sharing (not)

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C++

C++/CLI

C

MFC

ATL

WTL

STL

I have a program running on several PCs at the same time (VS6.0, C++, MFC). The customers data files are stored centrally on the network. He's complaining that the same data file can be open on different computers at the same time and changes made to one are being overwritten by the other.

Is it my problem to check if two PCs are accessing the same file or is it an IT function?

If it is my problem is there anyway to detect programatically whether a file is already open somewhere else?

Thanks