I have some question regarding tk canvas:

Suppose I create a canvas that has the size 500 x 500.

#!/usr/bin/perl -w

use Tk;
use strict;    

my $mw = MainWindow->new;
my $c = $mw->Canvas(
-width => 500, 
-height => 500, 
-background =>'blue', 
$c->pack; 

MainLoop;

[download]
How should i do so that only a part that has the size 100 x 100 is visible and that it is possible to scroll the rest of the canvas?

Now something more advanced question for a tk-noob like me..
If you have windows, rightclick and drag you create a rectangle. Within this special rectangle objects are marked. Is there any similar function in tk that could be used to mark objects on a canvas?

In reply to Scrolling and marking by dragging on canvas by tamaguchi

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