Very interesting indeed.
Especially since it seems to be happening primarly with certain combinations of Perl and Tk versions.
Funny to see that my initial suspicion was right, the entry()'d value is somehow converted to an integer.
Concerning you other remark about versions, i looked it up, and i'll just put it ahead of my code from now on, starting each new program with:

# Windows 7/64-bit
# Perl 5.26.1.1 for MSWin32-x64-multithread
# Tk 804.034

So i won't forget to mention those anymore, and it's a good reminder for myself too.
If you have any more remarks or advice on my little program, i'd be glad to hear it.
J.

In reply to Re^3: Tk : Entry widget-Strange behaviour with decimals by Caerwyn1955
in thread Tk : Entry widget-Strange behaviour with decimals by Caerwyn1955

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