From: Gin Mendi <gin18em@...>
Date: 2009-08-15T13:06:52+09:00
Subject: Re: Ruby/DL question

Aaron Patterson wrote:
> On Fri, Aug 14, 2009 at 01:43:24PM +0900, Gin Mendi wrote:
> 
> Hmmm.  You wouldn't happen to have some sample C code I could compile
> and try accessing with DL?
> 

All I have are the compiled DLLs and the callback sample that is called 
by the function I use that I first posted:

void my_callback(my_struct resultList, DWORD count)
{
  while (count != 0)
  {
    if (resultList != NULL)
    {
      printf("field1 - %s , field2 - %f \n", resultList->field1,
resultList->field2);
    }
    resultList++;
    count--;
  }
}

which I attempted to translate to:

MY_CALLBACK = DL.callback('0PL') { |result_list, count|
  if result_list
    record = MyStruct.new(result_list)
    puts record.field1
  end
}

The C callback works fine. My ruby callback works if count is 1. If it's 
more than 1 I only end up showing the first record. MyStruct is just a 
structure full of string, longs, int, and float values. my_struct data 
type in the C callback is just a pointer for the structure. Is there any 
other information I can give?

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