use Win32::API;

my $DataToEncode = "Test1 Test2 Test3";

use Win32::API;
  $function = Win32::API->new(
      'IDAutomationDMATRIX6.DLL', 'FontEncode',
  );
  $function->Call($DataToEncode);

[download]
 The advice of SankoR is most relevant.
Let's see ... since $DataToEncode is a string, we assume that FontEncode() takes a string as its one and only argument. And since you haven't attempted to collect the return value of $function->Call($DataToEncode) we assume that FontEncode() doesn't return anything. Therefore, you presumably want: 
  $function = Win32::API->new(
      'IDAutomationDMATRIX6.DLL', 'FontEncode', 'P', 'V'
  );

[download]
You can probably use Win32::API ... but you do need to know what types of arguments the functions take, and what types of values (if any) are returned. Normally, this information would be retrieved from a header file and/or documentation. Do you have either/both ?

Cheers,
Rob

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

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