If he wants to convert 4 or 5 or 6, my code will not be able to do that.

:) it already does do that, the user just has to change the number, your program only has to stop clearing the output window

Is this possible?

Sure, but does it make a good interface?

See these examples of this type of thing (as I don't feel like writing any code at the moment) Re: Tk: Creating label in hash, Re^5: Multiple frames, the "secret" is understanding scoping and life cycle of variables

In reply to Re: perl TK: Dynamically changing number of inputs at run time. by Anonymous Monk
in thread perl TK: Dynamically changing number of inputs at run time. by Ganesh Bharadwaj1

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