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-
- =head1 NAME
-
- Tk::Derived - Base class for widgets derived from others
-
- =for pm Tk/Derived.pm
-
- =for category Derived Widgets
-
- =head1 SYNOPSIS
-
- package Tk::Whatever;
- require Tk::Something;
- require Tk::Derived;
-
- @ISA = qw(Tk::Derived Tk::Something);
-
- sub Populate
- {
- my ($cw,$args) = @_;
- ...
- $cw->SUPER::Populate($args);
- $cw->ConfigSpecs(...);
- ...
- }
-
- =head1 DESCRIPTION
-
- Tk::Derived is used with perl5's multiple inheritance to override some
- methods normally inherited from Tk::Widget.
-
- Tk::Derived should precede any Tk widgets in the class's @ISA.
-
- Tk::Derived's main purpose is to apply wrappers to C<configure> and C<cget>
- methods of widgets to allow the derived widget to add to or modify behaviour
- of the configure options supported by the base widget.
-
- The derived class should normally override the C<Populate> method provided
- by Tk::Derived and call C<ConfigSpecs> to declare configure options.
-
- The public methods provided by Tk::Derived are as follows:
-
- =over 4
-
- =item -E<gt>ConfigSpecs(-I<key> =E<gt> [I<kind>, I<name>, I<Class>, I<default>], ...)
-
- =back
-
- =head1 SEE ALSO
-
- L<Tk::ConfigSpecs|Tk::ConfigSpecs>
- L<Tk::mega|Tk::mega>
-
- =cut
-
-