Re: RPG UDDS Generic File Display/Update (Null fields in program described files)

[Frank Kolmann <frank.kolmann@xxxxxxxxx>]

Hi Carsten

This is the Open code.
I will post the whole program on the wiki, soon.

Barbara you say that the C functions are not affected by the RPG ALWNULL 
setting,
thank you I did not understand that.

I did try setting up the DS as 1A fields, the C pragmas create unsigned 
Char fields for the nullmaps.
I will change the N back to 1A but that did not work previously.

What I am concluding is it may not be possible to set up a generic C 
function to
write records that have NULLs as so much of the code seems to be dependant
on an externally described file.

Regards
Frank

  // Open a Record File for I/O Operations
  //_RFILE *_Ropen(const char * filename, const char * mode, ...);
 D open            PR              * EXTPROC(*CWIDEN:'_Ropen')
 D   filename                      *   value options(*string)
 D   mode                          *   value options(*string)


// Open KEY seq
       in_p = *NULL;
       in_p = open(libfile  : 'rr+,nullcap=Y ');
    if        in_p = *NULL;
        MsgERR = 'open failed!';
       dsply  msgERR;

On 18/01/2019 5:33 PM, Flensburg, Carsten wrote:
> Hello Frank,
>
> What keywords did you specify for the mode parameter on the _Ropen call?
>
> Cheers,
> Carsten
>
> -----Original Message-----
> From: RPG400-L [mailto:rpg400-l-bounces@xxxxxxxxxxxxxxxxxx] On Behalf Of Frank Kolmann
> Sent: 17. januar 2019 08:02
> To: rpg400-l@xxxxxxxxxxxx
> Subject: Re: RPG UDDS Generic File Display/Update (Null fields in program described files)
>
> Ok thanks Barbara, I will try again.
> N
> D   OPBAL N
>                  == snip ==