my $table = $MainFrame-> MListbox( -selectmode => 'single', -columns=>[ [-text=>'Date', -sortable=>1, -width => 0], [-text=>'Time', -sortable=>1, -width => 0], [-text=>'Name', -sortable=>1, -width => 0], [-text=>'Address', -sortable=>1, -width => 0], [-text=>'Phone', -sortable=>1, -width => 0] ] )->pack(-fill=> 'both', -expand =>1, -side=>'left', -ipadx => 5);; while($result->fetch()){ ### Results from DB query $table->insert('end', [$Date, $Time, $Name, $Address, $Phone]); } my $scroll = $MainFrame->Scrollbar(-command => ['yview', $table]); table->configure(-yscrollcommand => ['set', $scroll]); $scroll->pack(-side => 'right', -fill => 'y'); #### error:Not a CODE reference at C:/Perl/site/lib/Tk/MListbox.pm line 723. Tk::Error: Not a CODE reference at C:/Perl/site/lib/Tk/MListbox.pm line 723. Tk::Widget::Callback at C:/Perl/site/lib/Tk/Widget.pm line 1149 Tk::CListbox::yview at C:/Perl/site/lib/Tk/MListbox.pm line 66 Tk::Derived::Delegate at C:/Perl/site/lib/Tk/Derived.pm line 463 Tk::Widget::__ANON__ at C:/Perl/site/lib/Tk/Widget.pm line 322 Tk::MListbox::yscrollCallback at C:/Perl/site/lib/Tk/MListbox.pm line 700 (command bound to event) #### error:Not a CODE reference at C:/Perl/site/lib/Tk/MListbox.pm line 720. error:Not a CODE reference at C:/Perl/site/lib/Tk/MListbox.pm line 720. Tk::Error: Not a CODE reference at C:/Perl/site/lib/Tk/MListbox.pm line 720. Tk::Widget::Callback at C:/Perl/site/lib/Tk/Widget.pm line 1149 Tk::CListbox::yview at C:/Perl/site/lib/Tk/MListbox.pm line 66 Tk::Derived::Delegate at C:/Perl/site/lib/Tk/Derived.pm line 469 Tk::Widget::__ANON__ at C:/Perl/site/lib/Tk/Widget.pm line 322 Tk::MListbox::yview at C:/Perl/site/lib/Tk/MListbox.pm line 911 Tk::Scrollbar::ScrlByUnits at ..\blib\lib\Tk\Scrollbar.pm (autosplit into ..\blib\lib\auto\Tk\Scrollbar\ScrlByUnits.al) line 336 Tk::Scrollbar::Select at ..\blib\lib\Tk\Scrollbar.pm (autosplit into ..\blib\lib\auto\Tk\Scrollbar\Select.al) line 201 Tk::Scrollbar::ButtonDown at ..\blib\lib\Tk\Scrollbar.pm (autosplit into ..\blib\lib\auto\Tk\Scrollbar\ButtonDown.al) line 159 (command bound to event)