It can get tricky, and you need to set the canvas's scrollregion, even though it is not a scrolled canvas. 
#!/usr/bin/perl -w
use Tk;
use strict;
use warnings;
use Tk::JPEG;
use Tk::PNG;

my $mw = MainWindow->new;

# I have a photo that is 500w x 430h
# so make the $mw a bit bigger
# This step can be automated to accept any size image
# but I hardcode the numbers for this simple example

$mw->geometry("510x440"); # gave $mw extra 10 pixels h and w to hold c
+anvas


# you need to be careful about specifying all sizes, and
# borderwidths, so that no scroll occurs
# you also probably need to set the scrollregion to the 
# exact photo size.

#you also will have problems if someone resizes the mainwindow
# you may need PDF, or SVG images, which Tk dosn't support yet 
# So you may want to make your window non-resizable
#   $mw->resizable(0,0);

my $canvas1 = $mw->Canvas(-bg=>'lightgreen', 
  -width=> 500, -height=>430,
  -scrollregion=>[0,0,500,430],

  )->pack(-expand=>0,-fill=>'none');

my $bg_img = $mw -> Photo(-file=>'1Zen16.jpg');

$canvas1->createImage(0,0,
                  -image => $bg_img,
          -anchor => 'nw',
          -tags => ['img'],
           );


MainLoop;

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Old Perl Programmer Haiku ................... flash japh

In reply to Re: Background Image is moving in perl tk by zentara
in thread Background Image is moving in perl tk by vr786

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