There's some partial Win64 support in the github version: 
git clone git://github.com/cosimo/perl5-win32-api.git win32-api

[download]
I actually have an API_test64.dll (different to the one on github) that allows t/API.t to pass its tests - but I think the partial support is for MS compilers only. Nothing there for x64 Strawberry Perl, afaik.

Here's the best I can do with that github version: 
t/00_API.t .......... ok
t/01_Struct.t ....... 1/7 # $^E=
t/01_Struct.t ....... Dubious, test returned 5 (wstat 280, 0x500)
Failed 2/7 subtests
t/02_GetProcess.t ... 1/3 # $result=3980
# $$=3980
t/02_GetProcess.t ... ok
t/03_undef.t ........ # Win32::API 0.60_64
t/03_undef.t ........ 1/3 # Import: The handle is invalid
# PeekNamedPipe: The handle is invalid

#   Failed test '(RT \#39730) sample API (PeekNamedPipe) works with un
+def values
'
#   at t/03_undef.t line 60.
# Looks like you failed 1 test of 3.
t/03_undef.t ........ Dubious, test returned 1 (wstat 256, 0x100)
Failed 1/3 subtests
t/04_rt_48006.t ..... 1/3 # Size is 296. Should be 296
t/04_rt_48006.t ..... ok
t/05_more_struct.t .. ok

[download]
It may be possible to do better with some simple hacking, but I don't pay much attention to Win32::API any more.
Imo, if you want to access the Win64 API, best to do it with XS (or Inline::C) - and that goes for both ActivePerl and Strawberry Perl.

Cheers,
Rob

In reply to Re: Win32::API on 64 bits Windows Perl? by syphilis
in thread Win32::API on 64 bits Windows Perl? by bart

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.