I did test on my Win10 machine, here is how to change the code page in a command window:
C:...Documents\PerlProjects\Monks>chcp 65001
Active code page: 65001

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With that and the above suggestions, and making sure my editor saved the program text as UTF-8 instead of ASCII, I got the correct display from STDERR in the command window. I did not get the message box to display properly from the program variable but did get cut-n-paste Chinese characters into the Tk window to show up correctly in the message box.

In reply to Re^2: Tk Entry & Right Single Quote by Marshall
in thread Tk Entry & Right Single Quote by cmv

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