From: "Stephan Kämper" <Stephan.Kaemper@...>
Date: 2005-03-29T02:59:46+09:00
Subject: DL usage / DL documentation

Hi all,

I currently try to call a function in a DLL, which has a prototype like 
this:

int test(int an_int, long * a_ptr_to_long, char * a_string);

How do I get a 'long *' into the method from Ruby using DL?

In C++ I'd just define a corresponding variable and pass its address:

long a_long;
int res = int test( 42, &a_long, "help me please" );


(Gee, I haven't programmed C++ a long time...)

But how do I do that from Ruby? (It seems I just don't understand this 
document: http://www.jbrowse.com/text/rdl_en.html )

Is there some more comprehensive documentation about DL out there?
Should I switch to the recently announced DL2 version 0.4?

Any help is really appreciated.

Stephan