Learning Perl/Tk

13.3. Review

It is a good idea to use another toplevel widget instead of the MainWindow if there is too much information to fit in one window. Using toplevels to group information is also sometimes a good idea. When to use an additional toplevel is a design decision that you'll have to make. You don't want to have too many windows for the user to navigate, but a well-designed application might be able to make use of one or two. For instance, the Tk module comes with a Tk::Dialog module that lets you easily display messages to the user. Check out the documentation included with the Dialog.pm file for more information on how to use it.