Hi Monks, I tried to ask in the Chatterbox, but I run out of charakters. I hope that it is allowed to ask here for help instead. I'm new to Perl and programming and english :-P (sorry for that). Im trying to read/write Serial Data and show them with Tk. I am using threads (one for read and one for write (because Non-blocking reading was impossible for me without threads)). I learned that threads have to be created before Tk starts. My Problem is the following: I want to be able to change/start the COM-Port from Tk. 
my $PortObj = new Control::CLI (Use => $PortName);

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but then I have to transfer the new $PortObj to the already running worker-threads. How would you do that? If I do in this order: $PortObj > workers > Tk-gui -> everything works fine. But $PortObj > workers > Tk-gui > "change PortObject and give new one to the worker-threads" fails. I tried many different things (please remember I am newbie) for example:
giving $PortObj by :shared var, to workers
giving $PortObj by queue, to workers
giving $PortObj by queue "freeze $PortObj" using Storable to workers
that all failed. My scripts normally get to work by 
until ($everything_works){
try; 
error;
read the Manual; 
google;
}

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but this time I think I need an advice. Thank you in advance!!! Best regards Stefan.

In reply to Tk and threads and Control::CLI- change Port-(Object) in Tk an let workers know by notworx

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