I am using Perl/Tk to create a little calculator program, just as practice.
As part of the calculator, I have a selection in one one of the menus labeled "Scientific mode" which
has such features as sin, cos, and tan.

I have put the entire scientific section into a subroutine so I could run it and generate the extra buttons, etc. The question I had is whether there is a way to make the scientific buttons disappear if the user clicks the button again.

The source is much too long (about 600 lines) to include here, but you can find it at http://joel.nackman.com/downloads/calculator.txt

Also, any other suggestions are welcome.

Thanks,
Joel

In reply to Perl/Tk question by joelnackman

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