From: Shashank Date <sdate@...>
Date: 2004-01-12T00:01:45+09:00
Subject: Re: dereferencing pointers in Win32 API

This worked :

> Just use memcpy.
> Try this code.
>
> require "Win32API"
>
> SERVICE_WORKSTATION = [
> 76,0,97,0,110,0,109,0,97,0,110,0,87,0,111,0,114,0,
> 107,0,115,0,116,0,97,0,116,0,105,0,111,0,110,0,0,0]
>
>
> SERVICE_WORKSTATION.each{|e| print "%c" % e if e > 0}
> puts
>
> service = SERVICE_WORKSTATION.pack("U*") # Unicode
>
> NetStatisticsGet = Win32API.new('netapi32','NetStatisticsGet','PPNNP','I')
>
> bufptr = "\0" * 4
> ret = NetStatisticsGet.call(0,service,0,0,bufptr)
>
> if 0 != ret
>   puts "Failed:#{ret}"
>   exit
> end
>
> STAT_WORKSTATION_SIZE =  (13*8) + (28*4)
>
> rbuf = "\0" * STAT_WORKSTATION_SIZE
> memcpy = Win32API.new('msvcrt','memcpy','PPL','P')
> memcpy.Call(rbuf,bufptr,STAT_WORKSTATION_SIZE)
>
> struct = rbuf.unpack("L*")
> p struct
>
> __END__
>
> Regards,
>
> Park Heesob

Thanks, Park.
-- shanko