Hi. I need some help with displaying a JPEG via TK using ActiveState Perl.

Pulling the image from a file works fine: 
use strict;
use Tk;
use Tk::JPEG;

my $fname = "rock.jpg";
my $win = new MainWindow;
my $image = $win->Photo('-format' => 'jpeg',
            '-file' => $fname);
$win->Label(-image=>$image)->pack;

MainLoop;

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But I can seem to load images from a data string (as the images will eventually be pulled from a database). That is, this doesn't work: 

use strict;
use Tk;
use Tk::JPEG;

my $fname = "rock.jpg";
open(F, $fname) or die "cant open $fname";
binmode(F);
undef $/;
my $jpeg = <F>;
close(F);

my $win = new MainWindow;
my $image = $win->Photo('-format' => 'jpeg',
            '-data' => $jpeg);
$win->Label(-image=>$image)->pack;

MainLoop;

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It dies with this error: 
couldn't recognize image data at C:/Perl/site/lib/Tk/Image.pm line 21.

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Can anyone offer advice? Am I reading the JPEG in wrong, or am I sending it to TK wrong?

Thanks

nop

In reply to Win32 Tk JPEG from memory problem by nop

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