storing Perl-Gtk objects on disk


I've built a Gtk Tree widget, and I tried to save it on disk using
Data::Dumper and Storable, but it seems that 
it doesn't work fine - the file to which I dumped the Tree (using
Data::Dumper) had only the following contents:

 $VAR1 = bless( {
                 '_gtk' => 139736072
               }, 'Gtk::TreeItem' );

it seems that all of the widget's arguments were lost.

Is it possible to store GUI objects on disk? Should it differ from storing
'regular' objects?



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