Sry ... I´ll try it more precisely.

Yes I am using win32::api an the definition of the function is:



When the function returns, this value contains the address of an allocated buffer, containing the information.

I defined my buffer like this

my $lpBuffer = " " x 1024;

And there is also something in $lpBuffer it should be a address =).

How can i get the information of the buffer with this address?

See in my first post the information i recieve.

I am not sure if i need to use unpack no.
thanks

When the function returns, this value contains the address of an allocated buffer, containing the information. I defined my buffer like this...

Does this function have a name and a return type? :--)

In general: sometimes you get back the true length of the buffer $lpBuffer which you can use to decode the actual value. Sometimes $lpBuffer contains a \0, the C string terminator/delimiter so you have to trim the value.

We need more context. What you provided is insufficient and confusing. $lpBuffer is intended to contain the packed structure, example

use strict;
use warnings;
use Win32::API;

my $GetTempPath = new Win32::API(
'kernel32', 'GetTempPath', 'NP', 'N');

my $lpBuffer = " " x 80;
my $return = $GetTempPath->Call(80, $lpBuffer);
my $TempPath = substr($lpBuffer, 0, $return);
print $TempPath,$/;
[download]

Get it?

Could you please be a bit more specific, c.q. post some code. Is this Win32:API stuff? Do you initialize $lpBuffer correctly? Are you sure unpack("W",$lpBuffer) is correct?