Struggling with API QDFRTVFD

Hi Jevgeni


The RPG Program I have here does get the hidden field names and attributes.
For getting the basic stuff it works well.
 http://wiki.midrange.com/index.php/QDFRTVFD

I am converting it to C but I am stuck on converting this line of code

 if        QDFFFINF.WDFFFIOA = x'01'

I coded it in C as a strncmp but I get this compile error.
I tried many things to attempt to cast from const char*  to char but I
am failing.
(the C code of the program is here
http://wiki.midrange.com/index.php/CQDFRTVFD
  It is a mix of the IBM code and the code I am converting , I am using the
IBM code as a guide to the conversion

 also I must admit I dont really know what this code means
 p_QDFFINFO = (QDFFINFO_t *)((char *) p_QDFFBASE + p_QDFFBASE->WDFFINOF);
 I know it sets a pointer to the data but what does
         (QDFFINFO_t *)((char *)  mean ?


This is and example of the compile error I am getting.
  217
|
  218    17 |   if (strncmp(p_QDFFFINF->WDFFFIOA, Attrib, 1) == 0)
{
  218    17 +   if ((_STRNCMPNULL((p_QDFFFINF->WDFFFIOA),(Attrib),(1))) ==
0) {
*=SEVERE==========> a - CZM0280  Function argument assignment between types
"const char*" and "char" is not allowed.
  219    18 |    NumFlds +=
1;
  220       |    }

However there are other uses of strncmp in the program that compile just
fine.
for example.

253     4 |    for (i=0; i<p_QDFFBASE->WDFFRCS; ++i)
{
254     5 |    if (strncmp(p_QDFARFTE->WDFARFNM,MyRec,10) == 0)
{
255     6 |       RecIndex = i + 1; /* Entry in QDFARFTE table for the
requested name*/
256


Thanks Buck for the insight on what to return.
I think I will just allocate an array in the caller and pass in a pointer
to the array
and see how that goes.


>date: Mon, 18 Aug 2014 16:07:35 +0300
>from: Jevgeni Astanovski <[email protected]>
>
>I used this program as a starting point and successfully retrieved
>ALMOST everything.
>I needed the following:
>Format name, field name, field I/O attribute (Input, Output, Both,
>Hidden), field type and field length.
>As wrote earlier my failure was with hidden fields.
>I found one place where hidden fields names could be retrieved and
>another place where I could find (probably) these fields necessary
>attributes - but without field names!
>Names where available for all but hidden....
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