Thanks. Win32::Process works, but I'd have to know the full path to excel.exe. "start" lets the file type registry on the client pc take care of finding excel ("start" also takes care of forking and returns immediatly, the Tk program doesn't have to wait for excel to exit, although in this case *everthing* is waiting for excel to *start*).

Backticks with `start file.csv` work fine as long as the Tk event loop isn't running. I'd still like to hear if anyone else has the same problem.

In reply to Re^2: subprocess delay on Windows with Perl/Tk by kgoess
in thread subprocess delay on Windows with Perl/Tk by kgoess

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