Example: creating thumbnails in Adobe Photoshop 

# From http://win32.perl.org/wiki/index.php?title=Win32::OLE_Examples

# loop through images

foreach my $image_file(@files) {
 
    # open image
    my $desc = $ps->MakeDescriptor();
    my $control = $ps->MakeControlObject();
    $desc->PutPath(phKeyNull,$image_file);
    $control->Play(phEventOpen,$desc,phDialogSilent);
 
    # set autolevels
    $desc = $ps->MakeDescriptor();
    $control = $ps->MakeControlObject();
    $desc->PutBoolean(phKeyAuto, 1);
    $control->Play(phEventLevels,$desc,phDialogSilent);
 
    # resize image
    $desc = $ps->MakeDescriptor();
    $control = $ps->MakeControlObject();
    $desc->PutUnitDouble(phKeyWidth, phUnitPixels, $size);
    $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,
        phEnumPNGInterlaceNone);
    $d2->PutEnumerated(phKeyPNGFilter,phTypePNGFilter,
        phEnumPNGFilterAdaptive);
    $d1->PutObject(phKeyAs,phClassPNGFormat,$d2);
 
    (my $outfile = File::Spec->rel2abs($image_file)) =~
        s/\.+[^\.]+$/_thumb${size}.png/;
    $outfile =~ s/\s//g;
 
    $d1->PutPath(phKeyIn,$outfile);
    $d1->PutBoolean(phKeyLowerCase, 1);
    $control->Play(phEventSave,$d1,phDialogSilent);
 
    $desc = $ps->MakeDescriptor();
    $control = $ps->MakeControlObject();
    $control->Play(phEventClose,$desc,phDialogSilent);
}
 
$ps->Quit();