[Tutor] GUI new project

Alan Gauld alan.gauld at btinternet.com
Mon Oct 23 06:17:29 CEST 2006

"Joe Cox" <jgcox39 at highstream.net> wrote
> As a new guy, I was trying to write a simple unit conversion
> program in Tk. I got this error message:TclError: unknown option 
> "-command"

Which says that you are using an unknown option command...

ie. Listboxes don't have a command option.


Alan Gauld
Author of the Learn to Program web site

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