Hi Ive been in touch with the vendor, and they confirm that both the dll and the function are correct,the paramaters are string,numeric,numeric,numeric,string

so my amended code now looks like this, however I still get the same error ('Cant call method "Call" on an undefined value at line 12'),
am I doing some thing wrong, or should I just learn VB so I can use the vendor example... 

use Win32::API;

my $DataToEncode = "Test1 Test2 Test3";

my $return_sring = undef;

use Win32::API;
  $function = Win32::API->new(
      'IDAutomationDMATRIX6', 'FontEncode',['P','N','N','N','P']
  );

   my $string =  $function->Call('FontEncode');

[download]

Thanks

In reply to Re^2: dll calling problems by skywalker
in thread dll calling problems by skywalker

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.