if you are only talking about using the changedir command, i dont see how another app could change the directory your app is refering to inside your own program.
That's the thing - I'm old enough to hark back to the days of MSDOS where changing the current directory meant that subsequent file specs where relative to it. :)
AFAIK, 'currentdir' or its equivalent has been local to each app since about Win95.
Yeah, I did some testing today and that does seem to be the case - thank God. :)
Cheers.