It depends on the code example. In the linked-text-widgets example I showed, just put a focus statement right before the MainLoop 
$yscroll->focus;  # will bind the up/down arrow keys to the vertical s
+crollbar
MainLoop();

[download]
In general, you can setup the focus order, but it can be a bit tricky. For instance the following allows you to tab around the 3 scrollbars, but the order is not as expected, the $xscrollright gets default since it was the last widget created....so you may need to play around with the order in which the scrollbars are created/packed, and the focus statements. 
$xscrollleft->focus; 
$xscrollright->focus;
$yscroll->focus;  
MainLoop();

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here is a little example on forcing focus order( as usual, search groups.google.com for more examples) 
#!/usr/bin/perl
use Tk;
use strict;
use warnings;

#changes focus on ANY key BUT tab

my $win = MainWindow->new();

$win->Button(-text=>'Other Window',-command=>\&otherwindow)->pack;

sub otherwindow
{
    my $otherwin = $win->Toplevel;
    my $foo = $otherwin->Entry->pack;
    my $bar = $otherwin->Entry->pack;
    my $baz = $otherwin->Entry->pack;
    my $boo = $otherwin->Entry->pack;
    my $baa = $otherwin->Entry->pack;

    &defineOrder($foo,$baa,$bar,$boo,$baz);
}    

sub defineOrder
{
    my $widget;
    for (my $i=0; defined( $_[$i+1] ); $i++)
    {

#        $_[$i]->bind('<Tab>', [\&focus, $_[$i+1]]);
        $_[$i]->bind('<Any-KeyPress>', [\&focus, $_[$i+1]]);
    }

    # Uncomment this line if you want to wrap around
    #$_[$#_]->bind('<Key-Return>',  [\&focus, $_[0]]);

    $_[0]->focus;
}

sub focus
{
    my ($tk, $self) = @_;
    $self->focus;
}

MainLoop();

[download]
I'm not really a human, but I play one on earth Remember How Lucky You Are

In reply to Re^8: how can i create a scrollbar in the main window using perl tk by zentara
in thread how can i create a scrollbar in the main window using perl tk by Anonymous Monk

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