Here's my problem. I want to have a routine that sniffs UDP traffic and creates a button every time it detects a certain pattern. I've the routine written already, it blocks (a consequence of the multicast implementation) until a packet for that multicast address is received. The problem is tying this to the MainLoop of Tcl. I've basically two loops: 1 for the multicast sniffing and 1 for the mainLoop. How can I set this up? I tried multithreading this but I can't make the mainWindow object shareable amongst the threads. This doesn't work: 
my $mainWindow = MainWindow->new;
share ($mainWindow);

Error:
Invalid value for shared scalar at /usr/lib/perl5/site_perl/5.8.5/i386
+-linux-thread-multi/Tk/Widget.pm

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What to do?

In reply to threads and Tcl or how to do multiple loops by coontie

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