Hi Im just wondering if the use of mutexes in WinXP/WinNT is significantly different to Win98/WinME. While using them in XP I am getting crashes possibly because Im using Win98 based code. Cheers,

Nope. There are more things you can do with mutexes in an NT-based OS, but that should hamper code going the other way (NT-based to 95/98-based). Going your direction, there shouldn''t be any problems. Maybe you can post the code that''s crashing?

Each new version of Windows is more pedantic about the format of arguments and such than the last. What may have worked in Windows 95, may not in 2000. The reason is probably that what you were doing in 95 was "wrong" (or at least not meant to be possible) but since Windows 95 is more forgiving, then you can get away with it.

What sort of crashes do you get? What does the code look like?

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