*) phKeyLowercase does not exist. Perhaps you should be trying phKeyLowerCase?

*) This should generate a list of all the constants that it exports: 

#!/usr/bin/perl -wl

package ap;

use Win32::OLE::Const "Adobe Photoshop";

package main;

$, = $/;

print sort grep defined *{"ap::$_"}{"CODE"}, keys %ap::;

[download]

Update: Hopped over to a machine that actually has AP on it and discovered that your code still doesn't work. Corrected version included in the readmore.

#! /usr/bin/perl

use strict;
use warnings;
use Win32::OLE;
use Win32::OLE::Const 'Adobe Photoshop';
use File::Spec;

my $image_file = './pic.jpg';

# start photoshop
my $ps = Win32::OLE->new('Photoshop.Application') or die $!;
$ps->{Visible} = 0;

# open image
my $desc = $ps->MakeDescriptor();
my $control = $ps->MakeControlObject();
$desc->PutPath(phKeyNull,$image_file);
$control->Play(phEventOpen,$desc,phDialogSilent);

# autolevels
$desc = $ps->MakeDescriptor();
$control = $ps->MakeControlObject();
$desc->PutBoolean(phKeyAuto, 1);
$control->Play(phEventLevels,$desc,phDialogSilent);

# resize to 400 * 400 px
$desc = $ps->MakeDescriptor();
$control = $ps->MakeControlObject();
$desc->PutUnitDouble(phKeyWidth, phUnitPixels, 400);
$desc->PutBoolean(phKeyConstrainProportions, 1);
$desc->PutEnumerated(phKeyInterfaceIconFrameDimmed,phTypeInterpolation
+,phEnumBicubic);
$control->Play(phEventImageSize,$desc,phDialogSilent);

$control = $ps->MakeControlObject();
my $d1 = $ps->MakeDescriptor();
my $d2 = $ps->MakeDescriptor();
$d2->PutEnumerated(phKeyPNGInterlaceType,phTypePNGInterlaceType,phEnum
+PNGInterlaceNone);
$d2->PutEnumerated(phKeyPNGFilter,phTypePNGFilter,phEnumPNGFilterAdapt
+ive);
$d1->PutObject(phKeyAs,phClassPNGFormat,$d2);

(my $outfile = File::Spec->rel2abs($image_file)) =~ s/\.jpg$/_thumb.pn
+g/;
print $outfile,"\n";

$d1->PutPath(phKeyIn,$outfile);
$d1->PutBoolean(phKeyLowerCase, 1);
$control->Play(phEventSave,$d1,phDialogSilent);

$desc = $ps->MakeDescriptor();
$control = $ps->MakeControlObject();
$control->Play(phEventClose,$desc,phDialogSilent);

[download]

In reply to Re: using Photoshop via Perl by !1
in thread using Photoshop via Perl by reneeb

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.