[Bill] >>>Desktop to the executable). The problem is, only *one* person at a time >>>should run the program. >
[Snip some good advise about file problems (that I'll look in to)] [André] > However, there is a Cookbook solution that does, I believe, that what > the original poster asked: > http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/67663 > > It is actually so short that I can even reproduce it below. > ========= > from win32event import CreateMutex > from win32api import GetLastError > from winerror import ERROR_ALREADY_EXISTS > from sys import exit > > handle = CreateMutex ( None, 1, 'A unique mutex name' ) > > if GetLastError ( ) == ERROR_ALREADY_EXISTS: > # take appropriate action if this is the second > # instance of this script; for example, > print 'Oh! dear, I exist already.' > exit ( 1 ) > ============ > A detailed explanation (of a slightly modified version) can be found > in the second edition of the Python Cookbook [Recipe 9.9]. André, Thanks for the pointer to this recipe! If I'm not mistaken (and I certainly could be) I believe this recipe is used to control instances of an already running *script*. While I'm trying to control a completely different executable (program) written by someone else. Maybe I'm reading the recipe wrong?? I'll take a better look at it and see if it will work for my situation. Thanks for the reply!! Bill _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
