Since there is no 'edit' button in your source, I assume you want to add it to the menu. To add a menuitem use the AddItems method of the menubutton like this: 
$sv_menu->AddItems([command => 'Edit', -command => \&edit]);

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In reply to Re: Perl/TK: enabling a disable menu item by busunsl
in thread Perl/TK: enabling a disable menu item by chimni

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