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From: chris <spamoff.danx@ntlworld.com>
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Subject: Re: Binding to C
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Date: Mon, 21 Jul 2003 23:57:36 +0200
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tmoran@acm.org wrote:
>>Also does anyone have any advice in general mapping to C.
> 
>  Look at some of the Windows binding source code at www.adapower.com
> 
>>For the jpeg_error_mgr struct, I mapped ptrs to functions to System.Address
>>and made the struct a record.  Will this work, or will the corresponding
>>type of the struct have to be a System.Address?
> 
>  You almost never need a System.Address.  Use access types.

Thanks, I've converted the small amount done so far to use access types. 
  What about unions?  I don't really care what's in the union, it's 
under the control of the lib, should I put a char_array of size 
JMSG_STR_PARM_MAX in there?


struct jpeg_error_msg {

   ...

   union {
     int i[8];
     char s[JMSG_STR_PARM_MAX];
   } msg_parm;
}

chris
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