From: Eleanor McHugh <eleanor@...>
Date: 2009-07-15T05:00:40+09:00
Subject: Re: Using DLLs with my Ruby app

On 14 Jul 2009, at 19:53, Gin Mendi wrote:
> Thanks for the replies!
>
> Yes I tried out both:
>
> 1) extern "void _serverLogon(string, string, string, void, void)"
> - which results to a "cannot find symbol" error.
>
> and
>
> 2) extern "void _serverLogon@20(string, string, string, void, void)"
> - which results to a "can't parse the function prototype" error.

I'm not on a Windows box so I can't easily test how dll function  
signatures work, however I suspect the problem is with extern not  
supporting the '@' embedded in the function signature. As an  
alternative you can try the following:

require 'dl'
dll = DL.dlopen(‘myAPI.dll’)
server_logon = dll[‘_serverLogon’, ‘0SSS00’]
server_logon.call ...

where the 0s indicate a void pointer, and ... is replaced with your  
parameter list.


Ellie

Eleanor McHugh
Games With Brains
http://slides.games-with-brains.net
----
raise ArgumentError unless @reality.responds_to? :reason