Hi, is there any way that I can bind an update on the Mainwindow on Tk with a scalar value, rather than a user interaction.

ie at the moment I can bind to an event (keyboard hit) with 

$mw -> bind('<Button-1>' => sub {print "actioned"});

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however I would like to be able to achive the same result with a scalar; 
$mw -> bind($shared_scalar => sub {print "actioned"});

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or can I initiate a pesudo key press to get the same result.

note: I have a GUI running a listbox with a shared array, which is processed by a thread, I need the GUI to update the display when the thread shifts a value from the array,

thanks
skywalker

In reply to Tk Bind scalar by skywalker

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