Why not run it in a thread? From what I gather, windows is thread based, so it should work. Create your Tk in your main thread and create a worker thread to run your command in. An example is at Tk-with-worker-threads
I'm not really a human, but I play one on earth. flash japh

In reply to Re: Run another program without blocking or exiting (Perl/Tk). by zentara
in thread Run another program without blocking or exiting (Perl/Tk). by jdtoronto

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