Just to give you a little more help with the scrollbar, here is a little example to show what happens when you override the scrollbar callback. Notice in this example, if I override the scrollbar's internal callback, it will stop working unless you manually do it. 
#!/usr/bin/perl 
use warnings;
use strict;
use Tk;

my $mw = MainWindow->new();

my $text_box = $mw->Scrolled("Text", 
                 -scrollbars => 'e',
                 -relief => 'sunken',
                 -takefocus => 1)
                 ->pack(-expand => 1, -fill => 'both');

for(1..1000){
$text_box->insert('end', "$_ test\n");
$text_box->see('end');
}

$text_box -> Subwidget("yscrollbar")->configure(
               -background => "lightgreen",
               -troughcolor => "black",
      #comment out the following line to restore normal
      #scroll function 
               -command => \&scrollcallback,
               );

MainLoop;

#if you specify a scrollcallback, you will override the 
#normal scroll behavior. 

sub scrollcallback{

#uncomment the following line to restore the normal function
#   $text_box->yview(@_); 

#do your additional stuff here
print "1\n";

}

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I'm not really a human, but I play one on earth. flash japh

In reply to Re: perl Tk::Scrolled : how do I hijack existing subwidget bindings? by zentara
in thread perl Tk::Scrolled : how do I hijack existing subwidget bindings? by Rudif

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