I am having a problem to bind MouseWheel with Canvas: 
use Tk;

$mw = new MainWindow;
$main = $mw -> Scrolled("Canvas",-scrollbars=>'e')-> pack(-side => 'le
+ft', -fill => 'both', -expand => 1);
$canvas = $main->Subwidget("canvas");

Tk::bind($canvas, '<MouseWheel>', [ sub {$f->yview('scroll',-($_[1] / 
+120) * 3,'units')}, Ev('D')]); 

$see = "\nHaaa, See that and die!";
$info = $main->createText(180, 15, -text => "$see", -font => 'Arial 11
+ bold' , -fill => red);
$main->configure(-scrollregion => [0,0,2000 , 2000]);

$canvas_cube = $main->Canvas(-width => 15, -height => 15, -background 
+=> 'green');
$main ->createWindow(75,75, -window => $canvas_cube);

$canvas->focus;

MainLoop;

[download]
What I am doing wrong with that? Many thanks for your insight.

In reply to Binding Canvas with MouseWheel by Anonymous Monk

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