From: Wolfgang <wollez@...>
Date: 2005-05-30T22:50:21+09:00
Subject: Re: WIN32API

Thanks for your help, but it is still not running. I think the fault is 
in my Fortran code.

Wolfgang

Park Heesob wrote:
> Hi,
> ----- Original Message ----- 
> From: "Dave Burt" <dave@burt.id.au>
> Newsgroups: comp.lang.ruby
> To: "ruby-talk ML" <ruby-talk@ruby-lang.org>
> Sent: Monday, May 30, 2005 9:40 PM
> Subject: Re: WIN32API
> 
> 
> 
>>"Wolfgang" <wollez@gmx.net> wrote:
>>
>>>Hello Brian,
>>>
>>>up to now I only have this in ruby:
>>>
>>>require 'Win32API'
>>>win = Win32API.new("dlltest.dll","DLL_WOOD",[],'L')
>>>somevalues = win.call()
>>>print somevalues
>>>
>>>the self made dll should return at the moment a fixed value (for 
>>>testing).
>>>I tried this with an integer, than it works. As soon I define the 
>>>variable
>>>in fortran as real, I get this nice numbers.
>>>
>>>Wolfgang
>>
>>Hi!
>>
>>The last parameter to Win32API.new is the type of the return value. If 
>>your
>>DLL function returns a long integer, 'L' is correct. If you change the DLL
>>so that the function returns a float or a double, you will have to change
>>that last parameter to 'F' or 'D':
>>
> 
> As far as I know,  You can't use 'F' or 'D' paramenter in Win32API.
> 
> This should be work for you:
> 
>  require 'Win32API'
>  win = Win32API.new("dlltest.dll","DLL_WOOD",[],'L')
>  somevalues = [win.call()].pack("L").unpack("f")[0]
>  print somevalues
> 
> Regards,
> 
> Park Heesob
> 
> 
> 
> 
> 
> 
> 
>