Thanks everyone for your help.  First, Mr. Calpini, I tried what you 
put in your email.  I still got an access violation (I'm on a Win2000 
Service Pack 2; the library was compiled with Visual C++ 6.0 Enterprise 
Edition).  The violation was "The instruction at "0x78001c9d" referenced 
memory at "0x00000000".  The memory could not be "read"".
     I also tried placing a "\x00" at the end of my packed string.  Same 
kind of violation occured when trying that.  As for XS, I tried using SWIG 
instead but ran into the "PERL_OBJECT and MUILTIPLICITY do not work 
together" problem.  From what I found in the archives, there is no obvious 
solution, i.e., no one answered the person's email.  I am very close to 
trying XS but I really wanted a faster solution to the problem.  If I need 
to use XS, so be it but I wanted to see if this could be used.
     Thanks again everyone.

Chris Yocum


>From: "Aldo Calpini" <[EMAIL PROTECTED]>
>To: "Chris Yocum" <[EMAIL PROTECTED]>,   
><[EMAIL PROTECTED]>
>Subject: Re: Win32::API
>Date: Wed, 27 Mar 2002 15:33:10 +0100
>MIME-Version: 1.0
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>Message-ID: <03f701c1d59c$57ff5410$[EMAIL PROTECTED]>
>References: <[EMAIL PROTECTED]>
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>
>Chris Yocum wrote:
> > $panda_open = Win32::API->new("c:\\temp\\panda",
> >                   "panda_open",
> >                   [P, P],
> >                   P);
> >
> > $filename = pack("p", "dd.pdf");
> > $mode = pack("p", "w");
> >
> > $panda_open->Call($filename, $mode);
>
>try without pack:
>
>   $filename = "dd.pdf";
>   $mode = "w";
>   $panda_open->Call($filename, $mode);
>
>if you mark a Win32::API parameter as 'P' and it contains a string,
>a pointer to that string is taken, which should be enough if your
>parameter is a char*. you need to pack/unpack if you're passing
>other kind of values (eg. a number, a structure, etc.) as a 'P'
>parameter.
>
>cheers,
>Aldo
>
>__END__
>$_=q,just perl,,s, , another ,,s,$, hacker,,print;
>
>


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