Hi, thanks for the answer. If I execute ./example.pm (your sample code) for the second time, my $top = MainWindow->new( ); is again executed. Iam not using $top that I created before or? my problem is exactly this. my code will be fully recreated. i will lose my $top. i can save the $top hash to a file but I don't know to recreate the $top reading from the file, if this could be a solution.

In reply to Re^2: Perl-Tk Notebook - add a new tab to exisitng $mw by shankar.chandra
in thread Perl-Tk Notebook - add a new tab to exisitng $mw by shankar.chandra

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