Thanks jimmi! What I want to do is have a udp socket receive packets from another udp socket in a separate thread (otherwise the GUI freezes), and when the socket receives the message "STOP", then it would disable the Disconnect button. Your code works well but it freezes the GUI when the thread is running. Thanks for your answer though!

In reply to Re^2: How to change a Tk object's property from a thread by santi_h87
in thread How to change a Tk object's property from a thread by santi_h87

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