[wxperl-users] Validators

[Marcus <li...@wo...>]

I think the vaildators are a good idea. If I understand the concept
correctly, then this is how Perl/Tk works, only you have no choice.

The downside is that when you "bind" a variable to a control, then any
changes while you are working with the variable appear immediately in
the GUI. An example that caused me and my beta tester many many hours
of grief is the following. I had to escape backslashes when storing
paths in a config file, in the GUI they were unescaped. As you can
imagine unescaped backslashes can cause amazing problems when let
loose. The only workaround was to keep copying variables back and
forth, and making lots of temp variables.

Only a word of warning, which should be at the top of the docs, in form
of a "When to use..". Otherwise, I am in favour of the validators,
since they can be very useful.

Marcus