is there any source code I could use to make a basic calculator in Tk?

See Tk Virtual Keyboard.

Also running the system command from a Tk program, will totally block the Tk eventloop until the system call returns, but it may work in your special case, as the eventloop should resume after the calculator window is closed.

I'm not really a human, but I play one on earth.
Old Perl Programmer Haiku ................... flash japh

In reply to Re: Perl/Tk System Function Error by zentara
in thread Perl/Tk System Function Error by perl.j

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