The cool thing about Gtk2 is it is designed properly.... most widgets have an eventbox built-in. A word of caution about pixel-zooming...... it will not save as zoomed, unless you grab a screenshot. 
#!/usr/bin/perl
use warnings;
use strict;
use Gtk2 '-init';
use Gnome2::Canvas;

my $window = Gtk2::Window->new;
$window ->signal_connect( 'destroy' => \&delete_event );

my $canvas = Gnome2::Canvas->new();
$canvas->set_size_request(256,256);
$canvas->set_scroll_region(0,0,256,256);
my $root = $canvas->root();

my $item = Gnome2::Canvas::Item->new($root,
"Gnome2::Canvas::Ellipse",
x1 => 0,
y1 => 0,
x2 => 200,
y2 => 180,
fill_color=>"red",
outline_color=>"black"
);

$item->signal_connect(event=>sub {print "I got an event!\n"; });

$canvas->signal_connect (event => \&event_handler);
$window->add ($canvas);
$window->show_all;

Gtk2->main;
###########################################################3

sub event_handler{
     my ( $widget, $event ) = @_;
     print $widget ,' ',$event->type,"\n";

    if ( $event->type eq "button-press" ) {
        print 'x->',$event->x,'  ','y->',$event->y,"\n";
    }    
}

sub delete_event {
Gtk2->main_quit;
return 0;
}

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I'm not really a human, but I play one on earth CandyGram for Mongo

In reply to Re^3: geoTiff Application Building by zentara
in thread geoTiff Application Building by deadpickle

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