Difference between revisions of "CQDFRTVFD"

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m (fix small bug)
 
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Line 1: Line 1:
−
  __FORCETOC__
+
  __FORCETOC__
  
  
 
== Introduction ==
 
== Introduction ==
  
−
C version of the RPG prpgram DSPINFO. (in development)  
+
C version of the RPG prpgram DSPINFO.  
−
is a work in progress
+
This program works differently to the RPG version.
 +
I coded it to return only one field or constant at a time.
 +
So to see all the fields in a DSPF it needs to loop.
 +
 
 +
DISPINFOC is coded quite inefficiently but it still works quite fast.
 +
It retreives the API data for every time it is called then iterates though all the fields.
 +
I coded it this way so as to hide the API retreival within DISPINFOC.
 +
 
 +
The 2 versions below are more efficient.
 +
 
 +
I did not include any of the logic to retreive FILE, RECORD, or FIELD attributes.
 +
Also there is no logic for any other caterories (eg Date/Time) other than Cat 23  (Conatants)
 +
 
 +
 
 +
===DISPINFOC ===
  
 
<pre>
 
<pre>
−
 
  
 
  /* Function: This program uses the QDFRTVFD API to return the */
 
  /* Function: This program uses the QDFRTVFD API to return the */
Line 31: Line 44:
 
  QDFARFTE_t *p_QDFARFTE;
 
  QDFARFTE_t *p_QDFARFTE;
 
  QDFFRINF_t *p_QDFFRINF;
 
  QDFFRINF_t *p_QDFFRINF;
 +
QDFFDPDD_t *p_QDFFDPDD;
 
  QDFFRDPD_t *p_QDFFRDPD;
 
  QDFFRDPD_t *p_QDFFRDPD;
−
QDFFRCTB_t *p_QDFFRCTB;
 
 
  QDFWFLEI_t *p_QDFWFLEI;
 
  QDFWFLEI_t *p_QDFWFLEI;
 
  QDFFNTBL_t *p_QDFFNTBL;
 
  QDFFNTBL_t *p_QDFFNTBL;
 
  QDFWRCDI_t *p_QDFWRCDI;
 
  QDFWRCDI_t *p_QDFWRCDI;
 
  QDFWFLDI_t *p_QDFWFLDI;
 
  QDFWFLDI_t *p_QDFWFLDI;
−
QDFFRCTE_t *p_QDFFRCTE;
 
 
  QDFFSFCR_t *p_QDFFSFCR;
 
  QDFFSFCR_t *p_QDFFSFCR;
 
  QDFFSFHR_t *p_QDFFSFHR;
 
  QDFFSFHR_t *p_QDFFSFHR;
Line 43: Line 55:
 
  QDFFFITB_t *p_QDFFFITB;
 
  QDFFFITB_t *p_QDFFFITB;
 
  QDFFFINF_t *p_QDFFFINF;
 
  QDFFFINF_t *p_QDFFFINF;
 +
QDFFFCON_t *p_QDFFFCON;
 +
QDFFFDPD_t *p_QDFFFDPD;
 +
QDFFFNAM_t *p_QDFFFNAM;
 +
QDFFFDIC_t *p_QDFFFDIC;
 +
QDFFXFDP_t *p_QDFFXFDP;
 +
QDFFRCTB_t *p_QDFFRCTB;
 +
QDFFRCTE_t *p_QDFFRCTE;
 +
QDFFNTB_t  *p_QDFFNTB;
 +
QDFFCOSA_t *p_QDFFCOSA;
 +
QDFFCCOA_t *p_QDFFCCOA;
 +
QDFKMFDK_t *p_QDFKMFDK;
 +
QDFKDFT_t  *p_QDFKDFT;
 +
QDFKEDTR_t *p_QDFKEDTR;
 +
QDFKDFPM_t *p_QDFKDFPM;
  
  
 
     /* Global variables */
 
     /* Global variables */
 +
    char *p_iLib;
 +
    char *p_iFile;
 +
    char *p_iRecord;
 +
    char *p_iField;
 +
    int  *p_iNumFld;
 +
    char *p_iFunc;
 +
 +
/* returned data  */
 +
typedef struct FieldData {
 +
    char RecordName[10];
 +
    char ROW[1];
 +
    char COL[1];
 +
    char FldIO[1];
 +
    char FldAtr[1];
 +
    char FldNam[10];
 +
    char FldCom[3000];
 +
    int  FldPlen;
 +
    int  FldDec;
 +
    int  EndDta;
 +
    int  NumFld;
 +
  } FieldData_t;
 +
 +
FieldData_t *p_FieldData;
 +
FieldData_t *Odata;
  
 
     typedef struct inputArguments
 
     typedef struct inputArguments
 
     {
 
     {
 
         char *pgmname;
 
         char *pgmname;
−
         char *Lib;
+
         char *iLib;
−
         char *File;
+
         char *iFile;
 +
        char *iRecord;
 +
        char *iField;
 +
        int  *iFld;
 +
        char *iFunc;
 +
        FieldData_t *iOdata;
 
     } main_args_t;
 
     } main_args_t;
  
−
    int FindRec (void);
 
−
    int FindField (void);
 
  
 
     int ProcessRec (void);
 
     int ProcessRec (void);
−
     int ProcessField (void);
+
     int ProcessField (int *);
 +
    int ProcessCons(void);
 +
    int ProcessCat22(void);
 +
    int ProcessCat23(void);
 +
    int ProcessCat24(void);
  
 
     int RecIndex;
 
     int RecIndex;
Line 65: Line 122:
 
     char *ReturnVar;
 
     char *ReturnVar;
  
 +
 +
    char FileName[20] = "                    ";
 
     char Format[8];
 
     char Format[8];
−
     char FileName[20] = "                    ";
+
     int EndFlds = 0;
−
    char RecordName[10];
 
−
 
 
−
/* DSPF information TEST ONLY */
 
−
    char MyRec[] = "C01      "; /* Test name */
 
−
    char MyField[] = "SRS01    "; /* Test name */
 
  
 
     /* 4 bytes WDFFRETN Length of the returned data. */
 
     /* 4 bytes WDFFRETN Length of the returned data. */
Line 91: Line 145:
  
  
−
    char *p_file ;
+
 
−
    char *p_lib ;
 
 
     int  API_Len;
 
     int  API_Len;
  
−
     p_file =  main_args->File;
+
     p_iFile  =  main_args->iFile;
−
     p_lib =  main_args->Lib;
+
     p_iLib    =  main_args->iLib;
−
 
+
    p_iRecord =  main_args->iRecord;
 +
    p_iField  =  main_args->iField;
 +
    p_iNumFld = main_args->iFld;
 +
    p_iFunc  =  main_args->iFunc;
 +
    Odata    =  main_args->iOdata;
  
 
/* Define the API format requested and the display file to access */
 
/* Define the API format requested and the display file to access */
Line 103: Line 160:
  
 
/* Point to your DSPF */
 
/* Point to your DSPF */
−
     memmove(FileName,p_file, strlen(p_file));
+
     memmove(FileName,p_iFile, strlen(p_iFile));
−
     memmove(FileName + 10 ,p_lib, strlen(p_lib ));
+
     memmove(FileName + 10 ,p_iLib, strlen(p_iLib ));
  
  
Line 133: Line 190:
 
     }
 
     }
  
−
    FindRec();
 
−
        printf("\nEnd of test");
 
  
 
     ProcessRec();
 
     ProcessRec();
Line 141: Line 196:
 
   free(ReturnVar);
 
   free(ReturnVar);
 
  }
 
  }
−
 
+
  /* ######################################### */
 
int ProcessRec() {
 
int ProcessRec() {
  
−
      int i;
+
    int  NumRecs;
 +
    int i;
 +
    int GotIt = 0;
 
     /* Access returned structures. The base structure starts at */
 
     /* Access returned structures. The base structure starts at */
 
     /* the begining of the returned space. */
 
     /* the begining of the returned space. */
Line 151: Line 208:
 
     p_QDFARFTE = (QDFARFTE_t *)((char *) p_QDFFINFO + p_QDFFINFO->WDFFDFLO);
 
     p_QDFARFTE = (QDFARFTE_t *)((char *) p_QDFFINFO + p_QDFFINFO->WDFFDFLO);
 
     p_QDFWFLEI = (QDFWFLEI_t *)((char *) p_QDFFINFO + p_QDFFINFO->WDFFWUOF);
 
     p_QDFWFLEI = (QDFWFLEI_t *)((char *) p_QDFFINFO + p_QDFFINFO->WDFFWUOF);
−
     p_QDFFRDPD = (QDFFRDPD_t *)((char *) p_QDFFRINF + p_QDFFRINF->WDFFRAOF);
+
     p_QDFFDPDD = (QDFFDPDD_t *)((char *) p_QDFFINFO + p_QDFFINFO->WDFFXDOF);
 
     p_QDFWRCDI = (QDFWRCDI_t *)((char *) p_QDFWFLEI + p_QDFWFLEI->WDFWXLEN);
 
     p_QDFWRCDI = (QDFWRCDI_t *)((char *) p_QDFWFLEI + p_QDFWFLEI->WDFWXLEN);
 
     p_QDFFNTBL = (QDFFNTBL_t *)((char *) p_QDFWFLEI + p_QDFWFLEI->WDFWNTBO);
 
     p_QDFFNTBL = (QDFFNTBL_t *)((char *) p_QDFWFLEI + p_QDFWFLEI->WDFWNTBO);
Line 157: Line 214:
 
     /*  here is the place to retreive File Keywords */
 
     /*  here is the place to retreive File Keywords */
  
−
     for (i=0; i<p_QDFFBASE->WDFFRCS; ++i) {
+
    NumRecs = p_QDFFBASE->WDFFRCS;
 +
 
 +
     for (i=0; i< NumRecs ; ++i) {
  
 
         /* Bump ptr to next record structure */
 
         /* Bump ptr to next record structure */
Line 164: Line 223:
 
       p_QDFARFTE = (QDFARFTE_t *)((char *) p_QDFARFTE + sizeof(QDFARFTE_t));  }
 
       p_QDFARFTE = (QDFARFTE_t *)((char *) p_QDFARFTE + sizeof(QDFARFTE_t));  }
  
−
     memcpy(RecordName,p_QDFARFTE->WDFARFNM,sizeof(p_QDFARFTE->WDFARFNM));
+
     memcpy(Odata->RecordName,
 +
            p_QDFARFTE->WDFARFNM,sizeof(p_QDFARFTE->WDFARFNM));
 +
 
 +
    if  (i EQ NumRecs - 1) {
 +
      EndFlds = 1;
 +
      }
 +
 
 +
    ProcessField(&GotIt);
  
  
−
    ProcessField();
 
  
 
     }
 
     }
Line 173: Line 238:
 
  }
 
  }
  
 +
  /* ######################################### */
  
−
int ProcessField() {
+
int ProcessField(int *GotIt) {
−
 
 
 
       int SflCtl;
 
       int SflCtl;
 
       int SizeIdx;
 
       int SizeIdx;
Line 183: Line 248:
 
       char Attrib[1];
 
       char Attrib[1];
 
       char X01    =  0x01 ;
 
       char X01    =  0x01 ;
 +
      char Functn[10] = "          ";
 +
 +
      NumFlds = 0;
  
 
       /*  record header  */
 
       /*  record header  */
Line 200: Line 268:
 
         }
 
         }
  
−
     for (SizeIdx=0; SizeIdx<p_QDFFBASE->WDFFSCR -1; ++SizeIdx) {
+
     for (SizeIdx=0; SizeIdx<p_QDFFBASE->WDFFSCR ; ++SizeIdx) {
 
     p_QDFFSCRA  = (QDFFSCRA_t *)((char *) p_QDFFBASE + sizeof(QDFFBASE_t)
 
     p_QDFFSCRA  = (QDFFSCRA_t *)((char *) p_QDFFBASE + sizeof(QDFFBASE_t)
 
                           + sizeof(QDFFSCRA_t) * SizeIdx    ) ;
 
                           + sizeof(QDFFSCRA_t) * SizeIdx    ) ;
Line 224: Line 292:
 
     for (FldIdx=0; FldIdx < p_QDFFRINF->WDFFFLD; ++FldIdx) {
 
     for (FldIdx=0; FldIdx < p_QDFFRINF->WDFFFLD; ++FldIdx) {
  
 +
      /* Field Header  */
 
     p_QDFFFINF = (QDFFFINF_t *)((char *) p_QDFFRINF + p_QDFFFITB->WDFFFOFS);
 
     p_QDFFFINF = (QDFFFINF_t *)((char *) p_QDFFRINF + p_QDFFFITB->WDFFFOFS);
  
−
     memmove(Attrib,p_QDFFFINF->WDFFFIOA, 1);
+
     if (p_QDFFFINF->WDFFFIOA EQ 0x01)  {
−
     if (strncmp(Attrib,X01, 1) == 0) {
+
      /* constant  */
−
       NumFlds += 1;
+
    p_QDFFFCON = (QDFFFCON_t *)((char *) p_QDFFFINF + sizeof(QDFFFINF_t));
−
     }
+
    p_QDFFFDPD = (QDFFFDPD_t *)((char *) p_QDFFFINF + p_QDFFFCON->WDFFFAOC);
 +
    }
 +
    else {
 +
      /*  variable */
 +
     p_QDFFFNAM = (QDFFFNAM_t *)((char *) p_QDFFFINF + sizeof(QDFFFINF_t));
 +
    p_QDFFFDPD = (QDFFFDPD_t *)((char *) p_QDFFFINF + p_QDFFFNAM->WDFFFAOF);
 +
    p_QDFFFDIC = (QDFFFDIC_t *)((char *) p_QDFFFDPD + sizeof(QDFFFDPD_t));
 +
    }
 +
       /* Field Extension  */
 +
    p_QDFFXFDP = (QDFFXFDP_t *)((char *) p_QDFFFINF + p_QDFFFDPD->WDFFXFDO);
 +
 
 +
      /* Row Column  */
 +
    p_QDFFRCTB = (QDFFRCTB_t *)((char *) p_QDFFRINF + p_QDFFRDPD->WDFFDRCO
 +
                    + (p_QDFWFLDI->WDFWRRDX - 1) *2);
 +
     p_QDFFRCTE = (QDFFRCTE_t *)((char *) p_QDFFRCTB + sizeof(QDFFRCTB_t));
 +
 
 +
      *Odata->ROW  =  p_QDFFRCTE->WDFFSROW;
 +
      *Odata->COL  =  p_QDFFRCTE->WDFFSCOL;
 +
 
 +
      /*  here can extract data time flags */
 +
 
 +
      /* CONSTANTS  */
 +
    if (p_QDFFFINF->WDFFFIOA EQ 0x01)  {
 +
      /* constant  */
 +
      ProcessCons();
 +
 
 +
    }
 +
    else {
 +
        /*  Field Name  */
 +
 
 +
      p_QDFFNTB  = (QDFFNTB_t *)((char *) p_QDFFNTBL + sizeof(QDFFNTBL_t)
 +
                          +  10 * (p_QDFWFLDI->WDFWNMEI -1) );
 +
 
  
 +
      /*Field attribute.  */
 +
      /*X'01' indicates Constant (see structure QDFFFCON, Constant Field  */
 +
      /*X'02' indicates Output (O), */
 +
      /*X'03' indicates Message (M), h (B), */
 +
      /*X'04' indicates Input (I),  (P)  */
 +
      /*X'05' indicates Both (B), */
 +
      /*X'06' indicates Hidden (H), and */
 +
      /*X'07' indicates Program to System (P) */
 +
      *Odata->FldIO    = p_QDFFFINF->WDFFFIOA;
  
 +
      /* Keyboard shift and data type.  */
 +
      /* X'00' indicates Alpha shift/character (A), */
  
  
 +
        *Odata->FldAtr  = p_QDFFFNAM->WDFFKBDT;
 +
        memcpy(Odata->FldNam,
 +
              p_QDFFNTB->WDFFNAM,sizeof(p_QDFFNTB->WDFFNAM));
 +
        memset(Odata->FldCom, ' ',3000);
 +
        Odata->FldPlen  = p_QDFFFNAM->WDFFPLEN;
 +
        Odata->FldDec  = p_QDFFFNAM->WDFFDEC;
 +
    }
  
 
   /***********  HERE include code for Field KEYWORDS **********/
 
   /***********  HERE include code for Field KEYWORDS **********/
−
 
 
       if (FldIdx < p_QDFFRINF->WDFFFLD -1) {
 
       if (FldIdx < p_QDFFRINF->WDFFFLD -1) {
 
       p_QDFWFLDI = (QDFWFLDI_t *)((char *) p_QDFWFLDI + p_QDFWFLDI->WDFWFLDL);
 
       p_QDFWFLDI = (QDFWFLDI_t *)((char *) p_QDFWFLDI + p_QDFWFLDI->WDFWFLDL);
Line 245: Line 363:
 
       NumFlds += 1;
 
       NumFlds += 1;
  
 +
      Odata->NumFld = NumFlds;
 +
      Odata->EndDta  = 0;
 +
 +
  /* End ofthe Fields  */
 +
      if ((EndFlds EQ 1) && (FldIdx EQ p_QDFFRINF->WDFFFLD -1) ) {
 +
        Odata->EndDta  = 1;
 +
        *GotIt = 1;
 +
      };
 +
 +
      /* Return the requested Field  */
 +
      memmove(Functn,p_iFunc, strlen(p_iFunc));
 +
 +
        if (!memcmp(Functn , "#FIRST", 6)) {
 +
            *GotIt = 1;
 +
          };
 +
 +
        if (*GotIt)  {
 +
            *GotIt  = 0;
 +
            free(ReturnVar);
 +
            exit(0);
 +
          };
 +
 +
    /* We know we are about to get the NEXT record when we have */
 +
    /* found the record just before                            */
 +
 +
      if (!memcmp(Functn , "#NEXT" , 5) &&
 +
      !memcmp(p_iRecord, Odata->RecordName, 10) &&
 +
      !memcmp(p_iField, Odata->FldNam, 10 ) &&
 +
        (*p_iNumFld  EQ  NumFlds))
 +
      *GotIt = 1;
  
  
Line 251: Line 399:
 
  }
 
  }
  
 +
  /* ######################################### */
 +
 +
int ProcessCons() {
 +
      /*------------------------------------------------*/
 +
      /* This loops through all keyword categories      */
 +
      /*  for a constant field (text on the screen.)    */
 +
      /*------------------------------------------------*/
 +
 +
  int cc;
 +
 +
    if  (p_QDFFFDPD->WDFFFDOC > 0) {
 +
 +
  /* p_QDFFRINF = (QDFFRINF_t *)((char *) p_QDFFINFO + p_QDFFFINF );*/
 +
  /* p_QDFFRINF  = p_QDFFINFO + QDFARFTE.WDFARFOF */
 +
 +
        p_QDFFCOSA = (QDFFCOSA_t *) ((char *) p_QDFFFINF +
 +
                                                p_QDFFFDPD->WDFFFDOC);
 +
      cc = 0;
 +
      for (cc=0; cc<=p_QDFFCOSA->WDFFCCT -1 ; ++cc) {
 +
 +
          p_QDFFCCOA  = (QDFFCCOA_t *)((char *) p_QDFFCOSA +
 +
                            sizeof(QDFFCOSA_t) + sizeof(QDFFCCOA_t) * cc);
 +
 +
 +
          if (p_QDFFCCOA->WDFFCAID EQ 0x22) {
 +
              p_QDFKMFDK = (QDFKMFDK_t *)((char *) p_QDFFFINF  +
 +
                                                p_QDFFCCOA->WDFFCAOF);
 +
              ProcessCat22();
 +
            }
 +
 +
 +
          if (p_QDFFCCOA->WDFFCAID EQ 0x23) {
 +
              p_QDFKDFT  = (QDFKDFT_t *)((char *) p_QDFFFINF  +
 +
                                                p_QDFFCCOA->WDFFCAOF);
 +
              ProcessCat23();
 +
            }
 +
 +
 +
          if (p_QDFFCCOA->WDFFCAID EQ 0x24) {
 +
              p_QDFKEDTR = (QDFKEDTR_t *)((char *) p_QDFFFINF  +
 +
                                                p_QDFFCCOA->WDFFCAOF);
 +
              ProcessCat24();
 +
            }
 +
 +
      }
 +
 +
 +
 +
 +
    }
 +
 +
 +
}
 +
 +
  /* ######################################### */
 +
 +
int ProcessCat22() {
 +
      /*-----------------------------------------------*/
 +
      /* This loops through all keywords that fall into*/
 +
      /*  category 22                                  */
 +
      /*-----------------------------------------------*/
 +
}
 +
 +
  /* ######################################### */
 +
 +
int ProcessCat23() {
 +
      /*------------------------------------------------*/
 +
      /* This loops through all keywords that fall into */
 +
      /*  category 23 (DFT, MSGCON, DFTVAL, HTML)      */
 +
      /*------------------------------------------------*/
 +
typedef _Packed struct  KwdData {
 +
    char Temp[3000];
 +
} KwdData_t;
 +
 +
  KwdData_t  *p_KwdData;
 +
  int        ck;
 +
 +
  for (ck=1; ck <= p_QDFKDFT->WDFKDFS ; ++ck) {
 +
 +
    if  (ck EQ 1 )  {
 +
    p_QDFKDFPM = (QDFKDFPM_t *)((char *) p_QDFKDFT + sizeof(QDFKDFT_t));  }
 +
    else
 +
    {p_QDFKDFPM = (QDFKDFPM_t *)((char *) p_QDFKDFPM  + sizeof(QDFKDFPM_t)); }
 +
 +
        if (p_QDFKDFPM->WDFKDFID EQ 0x01)  {
 +
 +
        memcpy(Odata->FldNam,"          ",10);
 +
 +
        Odata->FldPlen  = p_QDFKDFPM->WDFKDFLN;
 +
        *Odata->FldIO  = p_QDFFFINF->WDFFFIOA;
 +
  p_KwdData =  (KwdData_t *) ((char *) p_QDFKDFPM + sizeof(QDFKDFPM_t) );
 +
        memset(Odata->FldCom, ' ',3000);
 +
        memcpy(Odata->FldCom,
 +
                p_KwdData->Temp, p_QDFKDFPM->WDFKDFLN);
 +
 +
        }
 +
 +
    }
 +
 +
 +
}
 +
 +
  /* ######################################### */
 +
 +
int ProcessCat24() {
 +
      /*-----------------------------------------------*/
 +
      /* This loops through all keywords that fall into*/
 +
      /*  category 24  (Date, Time)                    */
 +
      /*-----------------------------------------------*/
 +
        memcpy(Odata->FldNam,"          ",10);
 +
        memset(Odata->FldCom, ' ',3000);
 +
}
 +
 +
 +
 +
</pre>
 +
[[#top]]
 +
 +
=== RTVFLD    (RPG code  DISPINFOC driver) ===
 +
 +
 +
RPG  Driver program for  DISPINFOC
 +
This program is coded to loop to invoke DISPINFOC for one field at a time.
 +
 +
It needs to pass a parameter  (#FIRST | #NEXT) to tell DISPINFOC what to do.
 +
 +
<pre>
 +
    h Option(*NODEBUGIO)  DFTACTGRP(*NO)
 +
 +
    D RTVFLD          PR
 +
    D                              10A
 +
    D                              10A
 +
 +
    D RTVFLD          PI
 +
    D iLib                          10A
 +
    D iFile                        10A
 +
 +
    D DISPINFOC      PR                  ExtPgm('DISPINFOC')
 +
    D Lib                          10A  const
 +
    D File                          10A  const
 +
    D oRecord                      10A  const
 +
    D oField                        10A  const
 +
    D oFld                          10I 0 const
 +
    D Func                          10A  const
 +
    D Fdata                              like(RTVDATA)
 +
          // returned data
 +
    D RTVDATA        DS
 +
    D RecordName                    10A
 +
    D ROW                            1A
 +
    D COL                            1A
 +
    D FldIO                          1A
 +
    D FldAtr                        1A
 +
    D FldNam                        10A
 +
    D FldCom                      3000A
 +
    D FLdPlen                      10I 0
 +
    D FldDec                        10I 0
 +
    D EndDta                        10I 0
 +
    D NumFld                        10I 0
 +
 +
    D oRecordName    S            10A
 +
    D oFldNam        S            10A
 +
    D oFld            S            10I 0
 +
 +
      /free
 +
 +
          *INLR = *ON;
 +
 +
          DISPINFOC( iLib  : iFile    : '  ': '  ' : 0  :
 +
                    '#FIRST' : RTVDATA  );
 +
 +
        DOW (EndDta = 0);
 +
 +
                    oRecordName  =    RecordName ;
 +
                    oFldNam      =    FldNam    ;
 +
                    oFld        =    NumFld    ;
 +
 +
      // To get the next record the previous fields info is also passed
 +
          DISPINFOC(iLib  :  iFile    :
 +
                    oRecordName  :
 +
                    oFldNam      :
 +
                    oFld        :
 +
                    '#NEXT ' : RTVDATA  );
 +
 +
        ENDDO;
 +
 +
      /end-free
 +
 +
 +
 +
 +
 +
</pre>
 +
[[#top]]
 +
 +
===DISPINFOC1  Version with User Space ===
 +
 +
 +
 +
<pre>
 +
 +
/* Function: This program uses the QDFRTVFD API to return the */
 +
/* structure of a display file.  */
 +
 +
 +
DISPINFOC1
 +
 +
 +
/* Function: This program uses the QDFRTVFD API to return the */
 +
/* structure of a display file.  */
 +
 +
 +
#include <stdio.h>
 +
#include <stdlib.h>
 +
#include <string.h>
 +
#include "QSYSINC/H/QUSEC"
 +
#include "QSYSINC/H/QDFRTVFD"
 +
 +
#include <mispace.h>
 +
#include <pointer.h>
 +
#include <mispcobj.h>
 +
#include <except.h>
 +
#include <qtes.h>
 +
 +
 +
    /* Link up the Create User Space API */
 +
    #pragma linkage(CreateUserSpace,OS)
 +
    #pragma map(CreateUserSpace,"QUSCRTUS")
 +
 +
    void    CreateUserSpace(char[20],
 +
                        char[10],
 +
                        long int,
 +
                        char,
 +
                        char[10],
 +
                        char[50],
 +
                        char[10],
 +
                        _TE_ERROR_CODE_T *
 +
                        );
 +
 +
    /* Link up the Delete User Space API */
 +
    #pragma linkage(DeleteUserSpace,OS)
 +
    #pragma map(DeleteUserSpace,"QUSDLTUS")
 +
    void    DeleteUserSpace(char[20],
 +
                        _TE_ERROR_CODE_T *
 +
                        );
 +
 +
    /* Link up the Retrieve Pointer to User Space API */
 +
    #pragma linkage(RetrievePointerToUserSpace,OS)
 +
    #pragma map(RetrievePointerToUserSpace,"QUSPTRUS")
 +
    void RetrievePointerToUserSpace(char[20],
 +
                                char **,
 +
                                _TE_ERROR_CODE_T *
 +
                                );
 +
 +
 +
#define EQ      ==
 +
 +
#define fail() do { printf("\nLine %d FAILED in file %s", \
 +
__LINE__,__FILE__); \
 +
} while(0)
 +
 +
/* Pointers to structures required to be used by this program. */
 +
QDFFBASE_t *p_QDFFBASE;
 +
QDFFINFO_t *p_QDFFINFO;
 +
QDFARFTE_t *p_QDFARFTE;
 +
QDFFRINF_t *p_QDFFRINF;
 +
QDFFDPDD_t *p_QDFFDPDD;
 +
QDFFRDPD_t *p_QDFFRDPD;
 +
QDFWFLEI_t *p_QDFWFLEI;
 +
QDFFNTBL_t *p_QDFFNTBL;
 +
QDFWRCDI_t *p_QDFWRCDI;
 +
QDFWFLDI_t *p_QDFWFLDI;
 +
QDFFSFCR_t *p_QDFFSFCR;
 +
QDFFSFHR_t *p_QDFFSFHR;
 +
QDFFSCRA_t *p_QDFFSCRA;
 +
QDFFFITB_t *p_QDFFFITB;
 +
QDFFFINF_t *p_QDFFFINF;
 +
QDFFFCON_t *p_QDFFFCON;
 +
QDFFFDPD_t *p_QDFFFDPD;
 +
QDFFFNAM_t *p_QDFFFNAM;
 +
QDFFFDIC_t *p_QDFFFDIC;
 +
QDFFXFDP_t *p_QDFFXFDP;
 +
QDFFRCTB_t *p_QDFFRCTB;
 +
QDFFRCTE_t *p_QDFFRCTE;
 +
QDFFNTB_t  *p_QDFFNTB;
 +
QDFFCOSA_t *p_QDFFCOSA;
 +
QDFFCCOA_t *p_QDFFCCOA;
 +
QDFKMFDK_t *p_QDFKMFDK;
 +
QDFKDFT_t  *p_QDFKDFT;
 +
QDFKEDTR_t *p_QDFKEDTR;
 +
QDFKDFPM_t *p_QDFKDFPM;
 +
 +
 +
    /* Global variables */
 +
    char *p_iLib;
 +
    char *p_iFile;
 +
    char *p_iRecord;
 +
    char *p_iField;
 +
    int  *p_iNumFld;
 +
    char *p_iFunc;
 +
 +
/* returned data  */
 +
typedef struct FieldData {
 +
    char RecordName[10];
 +
    char ROW[1];
 +
    char COL[1];
 +
    char FldIO[1];
 +
    char FldAtr[1];
 +
    char FldNam[10];
 +
    char FldCom[3000];
 +
    int  FldPlen;
 +
    int  FldDec;
 +
    int  EndDta;
 +
    int  NumFld;
 +
  } FieldData_t;
 +
 +
FieldData_t *p_FieldData;
 +
FieldData_t *Odata;
 +
 +
    typedef struct inputArguments
 +
    {
 +
        char *pgmname;
 +
        char *iLib;
 +
        char *iFile;
 +
        char *iRecord;
 +
        char *iField;
 +
        int  *iFld;
 +
        char *iFunc;
 +
        FieldData_t *iOdata;
 +
    } main_args_t;
 +
 +
    int RtvApiDta (void);
 +
    int ProcessRec (void);
 +
    int ProcessField (int *);
 +
    int ProcessCons(void);
 +
    int ProcessCat22(void);
 +
    int ProcessCat23(void);
 +
    int ProcessCat24(void);
 +
 +
    int RecIndex;
 +
 +
  /* Area into which the QDFRTVFD returns  the requested data.*/
 +
 +
    char *pBuffer;
 +
    _TE_ERROR_CODE_T errorCode;
 +
 +
 +
    char FileName[20] = "                    ";
 +
    char Format[8];
 +
    int  EndFlds = 0;
 +
 +
    /* 4 bytes WDFFRETN Length of the returned data. */
 +
    /* 4 bytes WDFFSIZE Size of the display file description */
 +
    typedef struct RtvSizeInfo
 +
    {
 +
        int ReturnLen;
 +
        int ReturnSiz;
 +
    } RtvSizeInfo_t;
 +
 +
 +
 +
  /* ########################################################  */
 +
int main(int argc, main_args_t *main_args)
 +
{
 +
 +
    char Funct[10] = "          ";
 +
 +
    p_iFile  =  main_args->iFile;
 +
    p_iLib    =  main_args->iLib;
 +
    p_iRecord =  main_args->iRecord;
 +
    p_iField  =  main_args->iField;
 +
    p_iNumFld =  main_args->iFld;
 +
    p_iFunc  =  main_args->iFunc;
 +
    Odata    =  main_args->iOdata;
 +
 +
 +
 +
      /* On First pass get the API data */
 +
      memmove(Funct,p_iFunc, strlen(p_iFunc));
 +
        if (!memcmp(Funct, "#FIRST", 6)) {
 +
            RtvApiDta();
 +
            };
 +
 +
        if (!memcmp(Funct, "#NEXT", 5)) {
 +
    /*! call RetrievePointerToUserSpace - Retrieve Pointer to User Space */
 +
          errorCode.BytesProvided = 0;
 +
          RetrievePointerToUserSpace("RTVFDUSPC QTEMP      ",
 +
                            &pBuffer,
 +
                            &errorCode);
 +
      }
 +
 +
    ProcessRec();
 +
 +
 +
    /*  free(ReturnVar);  */
 +
}
 +
 +
 +
 +
 +
  /* ######################################### */
  
 +
    RtvApiDta() {
  
−
int FindRec() {
+
    RtvSizeInfo_t *RtvSize;
−
        int i;
+
    int API_Len;
 +
 
 +
    Qus_EC_t Error_Code = {0};
 +
 
 +
 
 +
    /* Define the API format requested and the display file to access */
 +
    memcpy(Format,"DSPF0100",8);
 +
    /* Point to your DSPF */
 +
    memmove(FileName,p_iFile, strlen(p_iFile));
 +
    memmove(FileName + 10 ,p_iLib, strlen(p_iLib ));
 +
 
 +
    /* Invoke the API. to get the size needed */
 +
    RtvSize =  malloc(8);
 +
    QDFRTVFD (RtvSize,
 +
                8,
 +
                Format,
 +
                FileName,
 +
                &Error_Code);
 +
    if ( Error_Code.Bytes_Available != 0 ) {
 +
            fail();
 +
            exit (1);
 +
    }
 +
    API_Len  =  RtvSize->ReturnSiz;
 +
    free(RtvSize);
 +
 
 +
    CreateUserSpace("RTVFDUSPC QTEMP      ",
 +
                    "USRSPC    ",
 +
                    API_Len,
 +
                    0,
 +
                    "*ALL      ",
 +
                    " ",
 +
                    "*YES      ",
 +
                    &errorCode
 +
                    );
 +
 
 +
    /*! call RetrievePointerToUserSpace - Retrieve Pointer to User Space */
 +
    /*!! (pass: Name and library of user space, pointer variable */
 +
    /*!! return: nothing (pointer variable is left pointing to start*/
 +
    /*!! of user space) */
 +
      errorCode.BytesProvided = 0;
 +
      RetrievePointerToUserSpace("RTVFDUSPC QTEMP      ",
 +
                            &pBuffer,
 +
                            &errorCode);
 +
 
 +
    QDFRTVFD (pBuffer,
 +
                API_Len,
 +
                Format,
 +
                FileName,
 +
                &Error_Code);
 +
    if ( Error_Code.Bytes_Available != 0 ) {
 +
            fail();
 +
            printf( "\nExcId: %s" , Error_Code.Exception_Id );
 +
            exit (1);
 +
    }
 +
}
 +
 
 +
 
 +
 
 +
 
 +
  /* ######################################### */
 +
int ProcessRec() {
 +
 
 +
    int  NumRecs;
 +
    int i;
 +
    int GotIt = 0;
 
     /* Access returned structures. The base structure starts at */
 
     /* Access returned structures. The base structure starts at */
 
     /* the begining of the returned space. */
 
     /* the begining of the returned space. */
−
        p_QDFFBASE = (QDFFBASE_t *)ReturnVar;
+
    p_QDFFBASE = (QDFFBASE_t *)pBuffer;
−
        p_QDFFINFO = (QDFFINFO_t *)((char *) p_QDFFBASE + p_QDFFBASE->WDFFINOF);
+
    p_QDFFINFO = (QDFFINFO_t *)((char *) p_QDFFBASE + p_QDFFBASE->WDFFINOF);
−
        p_QDFARFTE = (QDFARFTE_t *)((char *) p_QDFFINFO + p_QDFFINFO->WDFFDFLO);
+
    p_QDFARFTE = (QDFARFTE_t *)((char *) p_QDFFINFO + p_QDFFINFO->WDFFDFLO);
−
    /* While there are records, look for the requested record name */
+
    p_QDFWFLEI = (QDFWFLEI_t *)((char *) p_QDFFINFO + p_QDFFINFO->WDFFWUOF);
−
     /* in the QDFARFTE structure. */
+
    p_QDFFDPDD = (QDFFDPDD_t *)((char *) p_QDFFINFO + p_QDFFINFO->WDFFXDOF);
−
    for (i=0; i<p_QDFFBASE->WDFFRCS; ++i) {
+
    p_QDFWRCDI = (QDFWRCDI_t *)((char *) p_QDFWFLEI + p_QDFWFLEI->WDFWXLEN);
−
    if (strncmp(p_QDFARFTE->WDFARFNM,MyRec,10) == 0) {
+
    p_QDFFNTBL = (QDFFNTBL_t *)((char *) p_QDFWFLEI + p_QDFWFLEI->WDFWNTBO);
−
        RecIndex = i + 1; /* Entry in QDFARFTE table for the requested name*/
+
 
 +
     /* here is the place to retreive File Keywords */
 +
 
 +
    NumRecs = p_QDFFBASE->WDFFRCS;
 +
 
 +
    for (i=0; i< NumRecs ; ++i) {
 +
 
 +
        /* Bump ptr to next record structure */
 +
      if (i  != 0)
 +
    {p_QDFWRCDI = (QDFWRCDI_t *)((char *) p_QDFWRCDI + p_QDFWRCDI->WDFWNXTR);
 +
      p_QDFARFTE = (QDFARFTE_t *)((char *) p_QDFARFTE + sizeof(QDFARFTE_t));  }
 +
 
 +
    memcpy(Odata->RecordName,
 +
            p_QDFARFTE->WDFARFNM,sizeof(p_QDFARFTE->WDFARFNM));
 +
 
 +
    if  (i EQ NumRecs - 1) {
 +
      EndFlds = 1;
 +
      }
 +
 
 +
    ProcessField(&GotIt);
 +
 
 +
 
 +
 
 +
    }
 +
 
 +
}
 +
 
 +
  /* ######################################### */
 +
 
 +
int ProcessField(int *GotIt) {
 +
 
 +
      int SflCtl;
 +
      int SizeIdx;
 +
      int FldIdx;
 +
      int NumFlds;
 +
      char ScrnSize[1];
 +
      char Attrib[1];
 +
      char X01    =  0x01 ;
 +
      char Functn[10] = "          ";
 +
 
 +
      NumFlds = 0;
 +
 
 +
      /*  record header  */
 +
      p_QDFFRINF = (QDFFRINF_t *)((char *) p_QDFFINFO + p_QDFARFTE->WDFARFOF);
 +
      /*  record dev dept  */
 +
      p_QDFFRDPD = (QDFFRDPD_t *)((char *) p_QDFFRINF + p_QDFFRINF->WDFFRAOF);
 +
      /*  SFLCTL                                                              */
 +
      /* 12  C      BIN(31) WDFFRFLG    Miscellaneous record contents.      */
 +
      /* 12  C  0  BIT(1)  WDFFUDDS    If on, USRDFN keyword is specified.  */
 +
      /* 12  C  1  BIT(1)  WDFFSFL If on, SFL keyword is specified (next rec*/
 +
      /* 12  C  2  BIT(1)  WDFFSFLC    If on, SFLCTL keyword is specified (p*/
 +
      SflCtl = 0;
 +
      if (p_QDFFRINF->WDFFRFLG.WDFFSFLC)
 +
        { SflCtl = 1;
 +
    p_QDFFSFCR  = (QDFFSFCR_t *)((char *) p_QDFFRINF + p_QDFFRINF->WDFFRAOF);
 +
    p_QDFFSFHR  = (QDFFSFHR_t *)((char *) p_QDFFSFCR + sizeof(QDFFSFCR_t));
 +
        }
  
−
    /* Access additional structures. */
+
    for (SizeIdx=0; SizeIdx<p_QDFFBASE->WDFFSCR ; ++SizeIdx) {
−
        p_QDFFRINF = (QDFFRINF_t *)((char *) p_QDFFINFO + p_QDFARFTE->WDFARFOF);
+
    p_QDFFSCRA  = (QDFFSCRA_t *)((char *) p_QDFFBASE + sizeof(QDFFBASE_t)
−
        p_QDFFRDPD = (QDFFRDPD_t *)((char *) p_QDFFRINF + p_QDFFRINF->WDFFRAOF);
+
                          + sizeof(QDFFSCRA_t) * SizeIdx    ) ;
 +
    *ScrnSize =  p_QDFFSCRA->WDFFSCIA ;
 +
    }
 
     /* Find RowColumn table. Note: this is the first row/col table */
 
     /* Find RowColumn table. Note: this is the first row/col table */
 
     /* so this code only works for the PRIMARY DISPLAY SIZE. */
 
     /* so this code only works for the PRIMARY DISPLAY SIZE. */
Line 274: Line 945:
 
     /* correct QDFFRCTB structure if more than one screen size is */
 
     /* correct QDFFRCTB structure if more than one screen size is */
 
     /* used. */
 
     /* used. */
−
         p_QDFFRCTB = (QDFFRCTB_t *)((char *) p_QDFFRINF + p_QDFFRDPD->WDFFDRCO);
+
      p_QDFFRCTB = (QDFFRCTB_t *)((char *) p_QDFFRINF + p_QDFFRDPD->WDFFDRCO);
−
            FindField(); /* Find the requested field */
+
 
−
         return(0); /* Task is done. */
+
    /********  HERE include code for Record Keywords ********/
 +
 
 +
    /*  PROCESS THE RECORDS FIELDS    */
 +
         /* Find where used section */
 +
 
 +
      p_QDFWFLDI = (QDFWFLDI_t *)((char *) p_QDFWRCDI + p_QDFWRCDI->WDFWRLEN);
 +
      p_QDFFFITB = (QDFFFITB_t *)((char *) p_QDFFRINF + p_QDFFRINF->WDFFOFIT
 +
                  +  ( p_QDFWFLDI->WDFWRRDX -1) * sizeof(QDFFFITB_t));
 +
 
 +
 
 +
    for (FldIdx=0; FldIdx < p_QDFFRINF->WDFFFLD; ++FldIdx) {
 +
 
 +
      /* Field Header  */
 +
    p_QDFFFINF = (QDFFFINF_t *)((char *) p_QDFFRINF + p_QDFFFITB->WDFFFOFS);
 +
 
 +
    if (p_QDFFFINF->WDFFFIOA EQ 0x01)  {
 +
      /* constant  */
 +
    p_QDFFFCON = (QDFFFCON_t *)((char *) p_QDFFFINF + sizeof(QDFFFINF_t));
 +
    p_QDFFFDPD = (QDFFFDPD_t *)((char *) p_QDFFFINF + p_QDFFFCON->WDFFFAOC);
 +
    }
 +
    else {
 +
      /*  variable */
 +
    p_QDFFFNAM = (QDFFFNAM_t *)((char *) p_QDFFFINF + sizeof(QDFFFINF_t));
 +
    p_QDFFFDPD = (QDFFFDPD_t *)((char *) p_QDFFFINF + p_QDFFFNAM->WDFFFAOF);
 +
    p_QDFFFDIC = (QDFFFDIC_t *)((char *) p_QDFFFDPD + sizeof(QDFFFDPD_t));
 +
    }
 +
      /* Field Extension  */
 +
    p_QDFFXFDP = (QDFFXFDP_t *)((char *) p_QDFFFINF + p_QDFFFDPD->WDFFXFDO);
 +
 
 +
      /* Row Column  */
 +
    p_QDFFRCTB = (QDFFRCTB_t *)((char *) p_QDFFRINF + p_QDFFRDPD->WDFFDRCO
 +
                    + (p_QDFWFLDI->WDFWRRDX - 1) *2);
 +
    p_QDFFRCTE = (QDFFRCTE_t *)((char *) p_QDFFRCTB + sizeof(QDFFRCTB_t));
 +
 
 +
      *Odata->ROW  =  p_QDFFRCTE->WDFFSROW;
 +
      *Odata->COL  =  p_QDFFRCTE->WDFFSCOL;
 +
 
 +
      /*  here can extract data time flags */
 +
 
 +
      /* CONSTANTS  */
 +
    if (p_QDFFFINF->WDFFFIOA EQ 0x01)  {
 +
      /* constant  */
 +
      ProcessCons();
 +
 
 +
    }
 +
    else {
 +
        /*  Field Name  */
 +
 
 +
      p_QDFFNTB  = (QDFFNTB_t *)((char *) p_QDFFNTBL + sizeof(QDFFNTBL_t)
 +
                          +  10 * (p_QDFWFLDI->WDFWNMEI -1) );
 +
 
 +
 
 +
      /*Field attribute.  */
 +
      /*X'01' indicates Constant (see structure QDFFFCON, Constant Field  */
 +
      /*X'02' indicates Output (O), */
 +
      /*X'03' indicates Message (M), h (B), */
 +
      /*X'04' indicates Input (I),  (P)  */
 +
      /*X'05' indicates Both (B), */
 +
      /*X'06' indicates Hidden (H), and */
 +
      /*X'07' indicates Program to System (P) */
 +
      *Odata->FldIO    = p_QDFFFINF->WDFFFIOA;
 +
 
 +
      /* Keyboard shift and data type.  */
 +
      /* X'00' indicates Alpha shift/character (A), */
 +
 
 +
 
 +
        *Odata->FldAtr  = p_QDFFFNAM->WDFFKBDT;
 +
        memcpy(Odata->FldNam,
 +
              p_QDFFNTB->WDFFNAM,sizeof(p_QDFFNTB->WDFFNAM));
 +
        memset(Odata->FldCom,' ',3000);
 +
        Odata->FldPlen  = p_QDFFFNAM->WDFFPLEN;
 +
        Odata->FldDec  = p_QDFFFNAM->WDFFDEC;
 +
    }
 +
 
 +
  /***********  HERE include code for Field KEYWORDS **********/
 +
      if (FldIdx < p_QDFFRINF->WDFFFLD -1) {
 +
      p_QDFWFLDI = (QDFWFLDI_t *)((char *) p_QDFWFLDI + p_QDFWFLDI->WDFWFLDL);
 +
      p_QDFFFITB = (QDFFFITB_t *)((char *) p_QDFFRINF + p_QDFFRINF->WDFFOFIT
 +
                  +  ( p_QDFWFLDI->WDFWRRDX -1) * sizeof(QDFFFITB_t));
 +
      }
 +
 
 +
      NumFlds += 1;
 +
 
 +
      Odata->NumFld  = NumFlds;
 +
      Odata->EndDta  = 0;
 +
 
 +
  /* End ofthe Fields  */
 +
      if ((EndFlds EQ 1) && (FldIdx EQ p_QDFFRINF->WDFFFLD -1) ) {
 +
        Odata->EndDta  = 1;
 +
        *GotIt = 1;
 +
        DeleteUserSpace("RTVFDUSPC QTEMP      ",
 +
                        &errorCode);
 +
      };
 +
 
 +
      /* Return the requested Field  */
 +
      memmove(Functn,p_iFunc, strlen(p_iFunc));
 +
 
 +
         if (!memcmp(Functn , "#FIRST", 6)) {
 +
            *GotIt = 1;
 +
          };
 +
 
 +
        if (*GotIt)  {
 +
            *GotIt  = 0;
 +
            exit(0);
 +
          };
 +
 
 +
    /* We know we are about to get the NEXT record when we have */
 +
    /* found the record just before                            */
 +
      if (!memcmp(Functn , "#NEXT" , 5) &&
 +
      !memcmp(p_iRecord, Odata->RecordName, 10) &&
 +
      !memcmp(p_iField, Odata->FldNam, 10 ) &&
 +
        (*p_iNumFld  EQ  NumFlds))
 +
      *GotIt = 1;
 +
 
 +
 
 +
 
 +
 
 +
    }
 +
 
 
  }
 
  }
 +
 +
  /* ######################################### */
 +
 +
int ProcessCons() {
 +
      /*------------------------------------------------*/
 +
      /* This loops through all keyword categories      */
 +
      /*  for a constant field (text on the screen.)    */
 +
      /*------------------------------------------------*/
 +
 +
  int cc;
 +
 +
    if  (p_QDFFFDPD->WDFFFDOC > 0) {
 +
 +
  /* p_QDFFRINF = (QDFFRINF_t *)((char *) p_QDFFINFO + p_QDFFFINF );*/
 +
  /* p_QDFFRINF  = p_QDFFINFO + QDFARFTE.WDFARFOF */
 +
 +
        p_QDFFCOSA = (QDFFCOSA_t *) ((char *) p_QDFFFINF +
 +
                                                p_QDFFFDPD->WDFFFDOC);
 +
      cc = 0;
 +
      for (cc=0; cc<=p_QDFFCOSA->WDFFCCT -1 ; ++cc) {
 +
 +
          p_QDFFCCOA  = (QDFFCCOA_t *)((char *) p_QDFFCOSA +
 +
                            sizeof(QDFFCOSA_t) + sizeof(QDFFCCOA_t) * cc);
 +
 +
 +
          if (p_QDFFCCOA->WDFFCAID EQ 0x22) {
 +
              p_QDFKMFDK = (QDFKMFDK_t *)((char *) p_QDFFFINF  +
 +
                                                p_QDFFCCOA->WDFFCAOF);
 +
              ProcessCat22();
 +
            }
 +
 +
 +
          if (p_QDFFCCOA->WDFFCAID EQ 0x23) {
 +
              p_QDFKDFT  = (QDFKDFT_t *)((char *) p_QDFFFINF  +
 +
                                                p_QDFFCCOA->WDFFCAOF);
 +
              ProcessCat23();
 +
            }
 +
 +
 +
          if (p_QDFFCCOA->WDFFCAID EQ 0x24) {
 +
              p_QDFKEDTR = (QDFKEDTR_t *)((char *) p_QDFFFINF  +
 +
                                                p_QDFFCCOA->WDFFCAOF);
 +
              ProcessCat24();
 +
            }
 +
 +
      }
 +
 +
 +
 +
 +
    }
 +
 +
 +
}
 +
 +
  /* ######################################### */
 +
 +
int ProcessCat22() {
 +
      /*-----------------------------------------------*/
 +
      /* This loops through all keywords that fall into*/
 +
      /*  category 22                                  */
 +
      /*-----------------------------------------------*/
 +
}
 +
 +
  /* ######################################### */
 +
 +
int ProcessCat23() {
 +
      /*------------------------------------------------*/
 +
      /* This loops through all keywords that fall into */
 +
      /*  category 23 (DFT, MSGCON, DFTVAL, HTML)      */
 +
      /*------------------------------------------------*/
 +
typedef _Packed struct  KwdData {
 +
    char Temp[3000];
 +
} KwdData_t;
 +
 +
  KwdData_t  *p_KwdData;
 +
  int        ck;
 +
 +
  for (ck=1; ck <= p_QDFKDFT->WDFKDFS ; ++ck) {
 +
 +
    if  (ck EQ 1 )  {
 +
    p_QDFKDFPM = (QDFKDFPM_t *)((char *) p_QDFKDFT + sizeof(QDFKDFT_t));  }
 
     else
 
     else
−
         p_QDFARFTE = (QDFARFTE_t *)((char *) p_QDFARFTE + sizeof(QDFARFTE_t));
+
    {p_QDFKDFPM = (QDFKDFPM_t *)((char *) p_QDFKDFPM  + sizeof(QDFKDFPM_t)); }
 +
 
 +
        if (p_QDFKDFPM->WDFKDFID EQ 0x01)  {
 +
 
 +
        memcpy(Odata->FldNam,"          ",10);
 +
 
 +
        Odata->FldPlen  = p_QDFKDFPM->WDFKDFLN;
 +
         *Odata->FldIO  = p_QDFFFINF->WDFFFIOA;
 +
  p_KwdData = (KwdData_t *) ((char *) p_QDFKDFPM + sizeof(QDFKDFPM_t) );
 +
        memset(Odata->FldCom, ' ',3000);
 +
        memcpy(Odata->FldCom,
 +
                p_KwdData->Temp, p_QDFKDFPM->WDFKDFLN);
 +
 
 +
        }
 +
 
 +
    }
 +
 
 +
 
 +
}
 +
 
 +
  /* ######################################### */
 +
 
 +
int ProcessCat24() {
 +
      /*-----------------------------------------------*/
 +
      /* This loops through all keywords that fall into*/
 +
      /*  category 24  (Date, Time)                    */
 +
      /*-----------------------------------------------*/
 +
        memcpy(Odata->FldNam,"          ",10);
 +
        memset(Odata->FldCom, ' ',3000);
 +
}
 +
 
 +
 
 +
RTVFLD1
 +
 
 +
    h Option(*NODEBUGIO)  DFTACTGRP(*NO)
 +
 
 +
    D RTVFLD1        PR
 +
    D                              10A
 +
    D                              10A
 +
 
 +
    D RTVFLD1        PI
 +
    D iLib                          10A
 +
    D iFile                        10A
 +
 
 +
    D DISPINFOC1      PR                  ExtPgm('DISPINFOC1')
 +
    D Lib                          10A  const
 +
    D File                          10A  const
 +
    D oRecord                      10A  const
 +
    D oField                        10A  const
 +
    D oFld                          10I 0 const
 +
    D Func                          10A  const
 +
    D Fdata                              like(RTVDATA)
 +
          // returned data
 +
    D RTVDATA        DS
 +
    D RecordName                    10A
 +
    D ROW                            1A
 +
    D COL                            1A
 +
    D FldIO                          1A
 +
    D FldAtr                        1A
 +
    D FldNam                        10A
 +
    D FldCom                      3000A
 +
    D FLdPlen                      10I 0
 +
    D FldDec                        10I 0
 +
    D EndDta                        10I 0
 +
    D NumFld                        10I 0
 +
 
 +
    D oRecordName    S            10A
 +
    D oFldNam        S            10A
 +
    D oFld            S            10I 0
 +
 
 +
      /free
 +
 
 +
          *INLR = *ON;
 +
 
 +
          DISPINFOC1( iLib  : iFile    : '  ': '  ' : 0 :
 +
                    '#FIRST' : RTVDATA  );
 +
 
 +
        DOW (EndDta = 0);
 +
 
 +
                    oRecordName  =    RecordName ;
 +
                    oFldNam      =    FldNam    ;
 +
                    oFld        =    NumFld    ;
 +
 
 +
      // To get the next record the previous fields info is also passed
 +
          DISPINFOC1(iLib  :  iFile    :
 +
                    oRecordName  :
 +
                    oFldNam      :
 +
                    oFld        :
 +
                    '#NEXT ' : RTVDATA  );
 +
 
 +
        ENDDO;
 +
 
 +
      /end-free
 +
 
 +
 
 +
 +
 
 +
</pre>
 +
 
 +
[[#top]]
 +
 
 +
===DISPINFOC2  Version with C Module ===
 +
 
 +
I needed to drive this fron a CLLE (code is below) because I need a RCLACTGRP DISPINFO2.
 +
 
 +
Reason is I did a return from the C module, rather than an exit.
 +
 
 +
 
 +
<pre>
 +
 
 +
DISPINFOC2
 +
 +
 
 +
/* Function: This module  uses the QDFRTVFD API to return the */
 +
/* structure of a display file.  */
 +
 
 +
/* CRTCMOD MODULE(urlib/DISPINFOC2) SRCFILE(urlib/C) SRCMBR(DISPINFOC2) */
 +
/*        REPLACE(*yes)                                                */
 +
 
 +
/* bind into your program with                                          */
 +
/* CRTPGM PGM(urlib/RTVFLD2)                                        */
 +
/*      MODULE(urlib/RTVFLD2 urlib/DISPINFOC2)                  */
 +
/*      ACTGRP(DISPINFO2)                                              */
 +
 
 +
 
 +
 
 +
#include <stdio.h>
 +
#include <stdlib.h>
 +
#include <string.h>
 +
#include "QSYSINC/H/QUSEC"
 +
#include "QSYSINC/H/QDFRTVFD"
 +
 
 +
 
 +
 
 +
#define EQ      ==
 +
 
 +
#define fail() do { printf("\nLine %d FAILED in file %s", \
 +
__LINE__,__FILE__); \
 +
} while(0)
 +
 
 +
/* Pointers to structures required to be used by this program. */
 +
QDFFBASE_t *p_QDFFBASE;
 +
QDFFINFO_t *p_QDFFINFO;
 +
QDFARFTE_t *p_QDFARFTE;
 +
QDFFRINF_t *p_QDFFRINF;
 +
QDFFDPDD_t *p_QDFFDPDD;
 +
QDFFRDPD_t *p_QDFFRDPD;
 +
QDFWFLEI_t *p_QDFWFLEI;
 +
QDFFNTBL_t *p_QDFFNTBL;
 +
QDFWRCDI_t *p_QDFWRCDI;
 +
QDFWFLDI_t *p_QDFWFLDI;
 +
QDFFSFCR_t *p_QDFFSFCR;
 +
QDFFSFHR_t *p_QDFFSFHR;
 +
QDFFSCRA_t *p_QDFFSCRA;
 +
QDFFFITB_t *p_QDFFFITB;
 +
QDFFFINF_t *p_QDFFFINF;
 +
QDFFFCON_t *p_QDFFFCON;
 +
QDFFFDPD_t *p_QDFFFDPD;
 +
QDFFFNAM_t *p_QDFFFNAM;
 +
QDFFFDIC_t *p_QDFFFDIC;
 +
QDFFXFDP_t *p_QDFFXFDP;
 +
QDFFRCTB_t *p_QDFFRCTB;
 +
QDFFRCTE_t *p_QDFFRCTE;
 +
QDFFNTB_t  *p_QDFFNTB;
 +
QDFFCOSA_t *p_QDFFCOSA;
 +
QDFFCCOA_t *p_QDFFCCOA;
 +
QDFKMFDK_t *p_QDFKMFDK;
 +
QDFKDFT_t  *p_QDFKDFT;
 +
QDFKEDTR_t *p_QDFKEDTR;
 +
QDFKDFPM_t *p_QDFKDFPM;
 +
 
 +
 
 +
    /* Global variables */
 +
    char *p_iLib;
 +
    char *p_iFile;
 +
    char *p_iRecord;
 +
    char *p_iField;
 +
    int  *p_iFld;
 +
    char *p_iFunc;
 +
 
 +
/* returned data  */
 +
typedef struct FieldData {
 +
    char RecordName[10];
 +
    char ROW[1];
 +
    char COL[1];
 +
    char FldIO[1];
 +
    char FldAtr[1];
 +
    char FldNam[10];
 +
    char FldCom[3000];
 +
    int  FldPlen;
 +
    int  FldDec;
 +
    int  EndDta;
 +
    int  NumFld;
 +
  } FieldData_t;
 +
 
 +
FieldData_t *p_FieldData;
 +
FieldData_t *Odata;
 +
 
 +
 
 +
    int RtvApiDta (void);
 +
    int ProcessRec (void);
 +
    int ProcessField (int *);
 +
    int ProcessCons(void);
 +
    int ProcessCat22(void);
 +
    int ProcessCat23(void);
 +
    int ProcessCat24(void);
 +
 
 +
    int RecIndex;
 +
 
 +
 
 +
    char *ReturnVar;
 +
 
 +
 
 +
 
 +
    char FileName[20] = "                    ";
 +
    char Format[8];
 +
    int  EndFlds = 0;
 +
 
 +
    /* 4 bytes WDFFRETN Length of the returned data. */
 +
    /* 4 bytes WDFFSIZE Size of the display file description */
 +
    typedef struct RtvSizeInfo
 +
    {
 +
        int ReturnLen;
 +
        int ReturnSiz;
 +
    } RtvSizeInfo_t;
 +
 
 +
 
 +
 
 +
  /* ########################################################  */
 +
int DISPINFOC2
 +
  (  char *p_pLib  ,
 +
      char *p_pFile ,
 +
      char *p_pRecord ,
 +
      char *p_pField ,
 +
      int  *p_pFld ,
 +
      char *p_pFunc ,
 +
    FieldData_t *pOdata)
 +
{
 +
 
 +
      char Funct[10] = "          ";
 +
 
 +
    p_iLib    = p_pLib;
 +
    p_iFile  = p_pFile;
 +
    p_iRecord = p_pRecord;
 +
    p_iField  = p_pField;
 +
    p_iFld    = p_pFld;
 +
    p_iFunc  = p_pFunc;
 +
    Odata    =  pOdata;
 +
 
 +
 
 +
      /* On First pass get the API data */
 +
      memmove(Funct,p_iFunc, strlen(p_iFunc));
 +
        if (!memcmp(Funct, "#FIRST", 6)) {
 +
            RtvApiDta();
 +
            };
 +
 
 +
 
 +
    ProcessRec();
 +
 
 
  }
 
  }
−
     /* If this point is reached, there was no match for the requested */
+
 
−
     /* record. */
+
 
−
        printf("\nThe requested record was not found %s",MyRec);
+
 
−
         return(0);
+
 
 +
  /* ######################################### */
 +
 
 +
    RtvApiDta() {
 +
 
 +
    RtvSizeInfo_t *RtvSize;
 +
    int  API_Len;
 +
 
 +
    Qus_EC_t Error_Code = {0};
 +
 
 +
 
 +
     /* Define the API format requested and the display file to access */
 +
    memcpy(Format,"DSPF0100",8);
 +
    /* Point to your DSPF */
 +
    memmove(FileName,p_iFile, strlen(p_iFile));
 +
    memmove(FileName + 10 ,p_iLib, strlen(p_iLib ));
 +
 
 +
     /* Invoke the API. to get the size needed */
 +
    RtvSize =  malloc(8);
 +
    QDFRTVFD (RtvSize,
 +
                8,
 +
                Format,
 +
                FileName,
 +
                &Error_Code);
 +
    if ( Error_Code.Bytes_Available != 0 ) {
 +
            fail();
 +
            exit (1);
 +
    }
 +
    API_Len  =  RtvSize->ReturnSiz;
 +
    free(RtvSize);
 +
 
 +
    ReturnVar =  malloc(API_Len);
 +
    QDFRTVFD (ReturnVar,
 +
                API_Len,
 +
                Format,
 +
                FileName,
 +
                &Error_Code);
 +
    if ( Error_Code.Bytes_Available != 0 ) {
 +
            fail();
 +
            printf( "\nExcId: %s" , Error_Code.Exception_Id );
 +
            exit (1);
 +
    }
 +
}
 +
 
 +
 
 +
 
 +
 
 +
  /* ######################################### */
 +
int ProcessRec() {
 +
 
 +
    int  NumRecs;
 +
    int i;
 +
    int GotIt = 0;
 +
    /* Access returned structures. The base structure starts at */
 +
    /* the begining of the returned space. */
 +
    p_QDFFBASE = (QDFFBASE_t *)ReturnVar;
 +
    p_QDFFINFO = (QDFFINFO_t *)((char *) p_QDFFBASE + p_QDFFBASE->WDFFINOF);
 +
    p_QDFARFTE = (QDFARFTE_t *)((char *) p_QDFFINFO + p_QDFFINFO->WDFFDFLO);
 +
    p_QDFWFLEI = (QDFWFLEI_t *)((char *) p_QDFFINFO + p_QDFFINFO->WDFFWUOF);
 +
    p_QDFFDPDD = (QDFFDPDD_t *)((char *) p_QDFFINFO + p_QDFFINFO->WDFFXDOF);
 +
    p_QDFWRCDI = (QDFWRCDI_t *)((char *) p_QDFWFLEI + p_QDFWFLEI->WDFWXLEN);
 +
    p_QDFFNTBL = (QDFFNTBL_t *)((char *) p_QDFWFLEI + p_QDFWFLEI->WDFWNTBO);
 +
 
 +
    /*  here is the place to retreive File Keywords */
 +
 
 +
    NumRecs = p_QDFFBASE->WDFFRCS;
 +
 
 +
    for (i=0; i< NumRecs ; ++i) {
 +
 
 +
        /* Bump ptr to next record structure */
 +
      if  (i  != 0)
 +
    {p_QDFWRCDI = (QDFWRCDI_t *)((char *) p_QDFWRCDI + p_QDFWRCDI->WDFWNXTR);
 +
      p_QDFARFTE = (QDFARFTE_t *)((char *) p_QDFARFTE + sizeof(QDFARFTE_t));  }
 +
 
 +
    memcpy(Odata->RecordName,
 +
            p_QDFARFTE->WDFARFNM,sizeof(p_QDFARFTE->WDFARFNM));
 +
 
 +
    if  (i EQ NumRecs - 1) {
 +
      EndFlds = 1;
 +
      }
 +
 
 +
    ProcessField(&GotIt);
 +
 
 +
         if (GotIt EQ 1)  {
 +
            return(0);
 +
          };
 +
 
 +
 
 +
    }
 +
 
 
  }
 
  }
  
 +
  /* ######################################### */
  
−
int FindField () {
+
int ProcessField(int *GotIt) {
−
    int j;
 
−
    int k;
 
−
    int NtblIndex;
 
−
    char *NamePtr;
 
−
    int RCIndex;
 
−
    int RecNumber;
 
−
    /* Find where used section */
 
−
      p_QDFWFLEI = (QDFWFLEI_t *)((char *) p_QDFFINFO + p_QDFFINFO->WDFFWUOF);
 
−
    /* Find name table. There is one entry for each unique field */
 
−
    /* name used in the file. A given name may be used in more than */
 
−
    /* one record format. */
 
−
      p_QDFFNTBL = (QDFFNTBL_t *)((char *) p_QDFWFLEI + p_QDFWFLEI->WDFWNTBO);
 
−
    /* Prepare to search table. Start search after the fixed portion. */
 
−
        NamePtr = (char *) p_QDFFNTBL + sizeof(QDFFNTBL_t);
 
−
        NtblIndex = 0;
 
−
    /* Find requested name */
 
−
    for (j=0; j<p_QDFFNTBL->WDFFNMS; ++j) {
 
−
        if (strncmp(NamePtr,MyField,10) == 0) {
 
−
            NtblIndex = j + 1;
 
−
    /* The requested name was found  Get first QDFWRCDI structure. */
 
−
  p_QDFWRCDI = (QDFWRCDI_t *)((char *) p_QDFWFLEI +p_QDFWFLEI->WDFWXLEN);
 
−
            RecNumber = 1;
 
  
−
    /* For each record, find the first field structure.          +
+
      int SflCtl;
−
     Then, find a match for the field name table index            +
+
      int SizeIdx;
−
    If found, the field structure containing the matched index +
+
      int FldIdx;
−
    also contains the row/column index. */
+
      int NumFlds;
 +
      char ScrnSize[1];
 +
      char Attrib[1];
 +
      char X01     = 0x01 ;
 +
      char Functn[10] = "          ";
  
−
    for (j=0; j<p_QDFFBASE->WDFFRCS; ++j) {
+
      NumFlds = 0;
−
    /* Make sure the field matching is for the correct record. */
+
 
−
        if (RecNumber == RecIndex) {
+
      /*  record header  */
−
        p_QDFWFLDI = (QDFWFLDI_t *)((char *) p_QDFWRCDI + p_QDFWRCDI->WDFWRLEN);
+
      p_QDFFRINF = (QDFFRINF_t *)((char *) p_QDFFINFO + p_QDFARFTE->WDFARFOF);
−
    /* Search for the correct field structure */
+
      /*  record dev dept  */
−
        for (k=0; k<p_QDFFRINF->WDFFFLD; ++k) {
+
      p_QDFFRDPD = (QDFFRDPD_t *)((char *) p_QDFFRINF + p_QDFFRINF->WDFFRAOF);
−
     /* Find the correct structure by finding a match for the */
+
      /*  SFLCTL                                                              */
−
     /* index into the field name table. */
+
      /* 12  C      BIN(31) WDFFRFLG    Miscellaneous record contents.      */
−
        if (NtblIndex == p_QDFWFLDI->WDFWNMEI) {
+
      /* 12  C  0  BIT(1)  WDFFUDDS    If on, USRDFN keyword is specified. */
−
            RCIndex = p_QDFWFLDI->WDFWRRDX; /* Row/Col index */
+
      /* 12  C  1  BIT(1)  WDFFSFL If on, SFL keyword is specified (next rec*/
−
     /* Point to first Row/Col Entry */
+
      /* 12  C  2  BIT(1)  WDFFSFLC    If on, SFLCTL keyword is specified (p*/
−
    p_QDFFRCTE = (QDFFRCTE_t *)((char *) p_QDFFRCTB + sizeof(QDFFRCTB_t));
+
      SflCtl = 0;
−
     /* Point to correct Row/Col Entry. Each entry is 2 bytes. */
+
      if (p_QDFFRINF->WDFFRFLG.WDFFSFLC)
−
    p_QDFFRCTE = (QDFFRCTE_t *)((char *) p_QDFFRCTE + ((RCIndex - 1) * 2 ));
+
        { SflCtl = 1;
−
        printf("\n%s %s Row and column (hex) %02x %02x",MyRec,MyField,
+
    p_QDFFSFCR  = (QDFFSFCR_t *)((char *) p_QDFFRINF + p_QDFFRINF->WDFFRAOF);
−
            *(char *) p_QDFFRCTE,*((char *) p_QDFFRCTE+1));
+
    p_QDFFSFHR  = (QDFFSFHR_t *)((char *) p_QDFFSFCR + sizeof(QDFFSFCR_t));
−
        return(0); /* Task is done */
+
        }
 +
 
 +
    for (SizeIdx=0; SizeIdx<p_QDFFBASE->WDFFSCR ; ++SizeIdx) {
 +
    p_QDFFSCRA  = (QDFFSCRA_t *)((char *) p_QDFFBASE + sizeof(QDFFBASE_t)
 +
                          + sizeof(QDFFSCRA_t) * SizeIdx    ) ;
 +
    *ScrnSize =  p_QDFFSCRA->WDFFSCIA ;
 +
    }
 +
     /* Find RowColumn table. Note: this is the first row/col table */
 +
    /* so this code only works for the PRIMARY DISPLAY SIZE. */
 +
     /* See QDFFRDPD.WDFFDRCO field description for finding the */
 +
    /* correct QDFFRCTB structure if more than one screen size is */
 +
    /* used. */
 +
      p_QDFFRCTB = (QDFFRCTB_t *)((char *) p_QDFFRINF + p_QDFFRDPD->WDFFDRCO);
 +
 
 +
    /********  HERE include code for Record Keywords ********/
 +
 
 +
     /* PROCESS THE RECORDS FIELDS    */
 +
        /* Find where used section */
 +
 
 +
      p_QDFWFLDI = (QDFWFLDI_t *)((char *) p_QDFWRCDI + p_QDFWRCDI->WDFWRLEN);
 +
      p_QDFFFITB = (QDFFFITB_t *)((char *) p_QDFFRINF + p_QDFFRINF->WDFFOFIT
 +
                  + ( p_QDFWFLDI->WDFWRRDX -1) * sizeof(QDFFFITB_t));
 +
 
 +
 
 +
     for (FldIdx=0; FldIdx < p_QDFFRINF->WDFFFLD; ++FldIdx) {
 +
 
 +
      /* Field Header  */
 +
    p_QDFFFINF = (QDFFFINF_t *)((char *) p_QDFFRINF + p_QDFFFITB->WDFFFOFS);
 +
 
 +
    if (p_QDFFFINF->WDFFFIOA EQ 0x01) {
 +
      /* constant  */
 +
    p_QDFFFCON = (QDFFFCON_t *)((char *) p_QDFFFINF + sizeof(QDFFFINF_t));
 +
    p_QDFFFDPD = (QDFFFDPD_t *)((char *) p_QDFFFINF + p_QDFFFCON->WDFFFAOC);
 
     }
 
     }
−
     else
+
     else {
−
        p_QDFWFLDI = (QDFWFLDI_t *)((char *) p_QDFWFLDI + p_QDFWFLDI->WDFWFLDL);
+
      /*  variable */
 +
    p_QDFFFNAM = (QDFFFNAM_t *)((char *) p_QDFFFINF + sizeof(QDFFFINF_t));
 +
    p_QDFFFDPD = (QDFFFDPD_t *)((char *) p_QDFFFINF + p_QDFFFNAM->WDFFFAOF);
 +
    p_QDFFFDIC = (QDFFFDIC_t *)((char *) p_QDFFFDPD + sizeof(QDFFFDPD_t));
 
     }
 
     }
 +
      /* Field Extension  */
 +
    p_QDFFXFDP = (QDFFXFDP_t *)((char *) p_QDFFFINF + p_QDFFFDPD->WDFFXFDO);
 +
 +
      /* Row Column  */
 +
    p_QDFFRCTB = (QDFFRCTB_t *)((char *) p_QDFFRINF + p_QDFFRDPD->WDFFDRCO
 +
                    + (p_QDFWFLDI->WDFWRRDX - 1) *2);
 +
    p_QDFFRCTE = (QDFFRCTE_t *)((char *) p_QDFFRCTB + sizeof(QDFFRCTB_t));
 +
 +
      *Odata->ROW  =  p_QDFFRCTE->WDFFSROW;
 +
      *Odata->COL  =  p_QDFFRCTE->WDFFSCOL;
 +
 +
      /*  here can extract data time flags */
 +
 +
      /* CONSTANTS  */
 +
    if (p_QDFFFINF->WDFFFIOA EQ 0x01)  {
 +
      /* constant  */
 +
      ProcessCons();
 +
 
     }
 
     }
 
     else {
 
     else {
−
    /* Bump ptr to next record structure */
+
        /*   Field Name  */
−
        p_QDFWRCDI = (QDFWRCDI_t *)((char *) p_QDFWRCDI + p_QDFWRCDI->WDFWNXTR);
+
 
−
     RecNumber = RecNumber + 1;
+
      p_QDFFNTB  = (QDFFNTB_t *)((char *) p_QDFFNTBL + sizeof(QDFFNTBL_t)
−
         }
+
                          + 10 * (p_QDFWFLDI->WDFWNMEI -1) );
 +
 
 +
 
 +
      /*Field attribute.  */
 +
      /*X'01' indicates Constant (see structure QDFFFCON, Constant Field  */
 +
      /*X'02' indicates Output (O), */
 +
      /*X'03' indicates Message (M), h (B), */
 +
      /*X'04' indicates Input (I),  (P)  */
 +
      /*X'05' indicates Both (B), */
 +
      /*X'06' indicates Hidden (H), and */
 +
      /*X'07' indicates Program to System (P) */
 +
      *Odata->FldIO     = p_QDFFFINF->WDFFFIOA;
 +
 
 +
      /* Keyboard shift and data type.  */
 +
      /* X'00' indicates Alpha shift/character (A), */
 +
 
 +
 
 +
        *Odata->FldAtr  = p_QDFFFNAM->WDFFKBDT;
 +
        memcpy(Odata->FldNam,
 +
              p_QDFFNTB->WDFFNAM,sizeof(p_QDFFNTB->WDFFNAM));
 +
        memset(Odata->FldCom, ' ',3000);
 +
        Odata->FldPlen  = p_QDFFFNAM->WDFFPLEN;
 +
         Odata->FldDec  = p_QDFFFNAM->WDFFDEC;
 
     }
 
     }
 +
 +
  /***********  HERE include code for Field KEYWORDS **********/
 +
      if (FldIdx < p_QDFFRINF->WDFFFLD -1) {
 +
      p_QDFWFLDI = (QDFWFLDI_t *)((char *) p_QDFWFLDI + p_QDFWFLDI->WDFWFLDL);
 +
      p_QDFFFITB = (QDFFFITB_t *)((char *) p_QDFFRINF + p_QDFFRINF->WDFFOFIT
 +
                  +  ( p_QDFWFLDI->WDFWRRDX -1) * sizeof(QDFFFITB_t));
 +
      }
 +
 +
      NumFlds += 1;
 +
 +
      Odata->NumFld  = NumFlds;
 +
      Odata->EndDta  = 0;
 +
 +
  /* End ofthe Fields  */
 +
      if ((EndFlds EQ 1) && (FldIdx EQ p_QDFFRINF->WDFFFLD -1) ) {
 +
        Odata->EndDta  = 1;
 +
        *GotIt = 2;
 +
        free(ReturnVar);
 +
      };
 +
 +
      /* Return the requested Field  */
 +
      memmove(Functn,p_iFunc, strlen(p_iFunc));
 +
 +
        if ( (!memcmp(Functn , "#FIRST", 6)) || (*GotIt EQ 2))  {
 +
            *GotIt = 1;
 +
            return(0);
 +
          };
 +
 +
 +
    /* We know we are about to get the NEXT record when we have */
 +
    /* found the record just before                            */
 +
      if (!memcmp(Functn , "#NEXT" , 5) &&
 +
      !memcmp(p_iRecord, Odata->RecordName, 10) &&
 +
      !memcmp(p_iField, Odata->FldNam, 10 ) &&
 +
        (*p_iFld  EQ  NumFlds))
 +
      *GotIt = 2;
 +
 +
 +
 
     }
 
     }
 +
 +
}
 +
 +
  /* ######################################### */
 +
 +
int ProcessCons() {
 +
      /*------------------------------------------------*/
 +
      /* This loops through all keyword categories      */
 +
      /*  for a constant field (text on the screen.)    */
 +
      /*------------------------------------------------*/
 +
 +
  int cc;
 +
 +
    if  (p_QDFFFDPD->WDFFFDOC > 0) {
 +
 +
  /* p_QDFFRINF = (QDFFRINF_t *)((char *) p_QDFFINFO + p_QDFFFINF );*/
 +
  /* p_QDFFRINF  = p_QDFFINFO + QDFARFTE.WDFARFOF */
 +
 +
        p_QDFFCOSA = (QDFFCOSA_t *) ((char *) p_QDFFFINF +
 +
                                                p_QDFFFDPD->WDFFFDOC);
 +
      cc = 0;
 +
      for (cc=0; cc<=p_QDFFCOSA->WDFFCCT -1 ; ++cc) {
 +
 +
          p_QDFFCCOA  = (QDFFCCOA_t *)((char *) p_QDFFCOSA +
 +
                            sizeof(QDFFCOSA_t) + sizeof(QDFFCCOA_t) * cc);
 +
 +
 +
          if (p_QDFFCCOA->WDFFCAID EQ 0x22) {
 +
              p_QDFKMFDK = (QDFKMFDK_t *)((char *) p_QDFFFINF  +
 +
                                                p_QDFFCCOA->WDFFCAOF);
 +
              ProcessCat22();
 +
            }
 +
 +
 +
          if (p_QDFFCCOA->WDFFCAID EQ 0x23) {
 +
              p_QDFKDFT  = (QDFKDFT_t *)((char *) p_QDFFFINF  +
 +
                                                p_QDFFCCOA->WDFFCAOF);
 +
              ProcessCat23();
 +
            }
 +
 +
 +
          if (p_QDFFCCOA->WDFFCAID EQ 0x24) {
 +
              p_QDFKEDTR = (QDFKEDTR_t *)((char *) p_QDFFFINF  +
 +
                                                p_QDFFCCOA->WDFFCAOF);
 +
              ProcessCat24();
 +
            }
 +
 +
      }
 +
 +
 +
 +
 +
    }
 +
 +
 +
}
 +
 +
  /* ######################################### */
 +
 +
int ProcessCat22() {
 +
      /*-----------------------------------------------*/
 +
      /* This loops through all keywords that fall into*/
 +
      /*  category 22                                  */
 +
      /*-----------------------------------------------*/
 +
}
 +
 +
  /* ######################################### */
 +
 +
int ProcessCat23() {
 +
      /*------------------------------------------------*/
 +
      /* This loops through all keywords that fall into */
 +
      /*  category 23 (DFT, MSGCON, DFTVAL, HTML)      */
 +
      /*------------------------------------------------*/
 +
typedef _Packed struct  KwdData {
 +
    char Temp[3000];
 +
} KwdData_t;
 +
 +
  KwdData_t  *p_KwdData;
 +
  int        ck;
 +
 +
  for (ck=1; ck <= p_QDFKDFT->WDFKDFS ; ++ck) {
 +
 +
    if  (ck EQ 1 )  {
 +
    p_QDFKDFPM = (QDFKDFPM_t *)((char *) p_QDFKDFT + sizeof(QDFKDFT_t));  }
 
     else
 
     else
−
        NamePtr = NamePtr + 10; /* Size of field name*/
+
    {p_QDFKDFPM = (QDFKDFPM_t *)((char *) p_QDFKDFPM  + sizeof(QDFKDFPM_t)); }
 +
 
 +
        if (p_QDFKDFPM->WDFKDFID EQ 0x01)  {
 +
 
 +
        memcpy(Odata->FldNam,"          ",10);
 +
 
 +
        Odata->FldPlen  = p_QDFKDFPM->WDFKDFLN;
 +
        *Odata->FldIO  = p_QDFFFINF->WDFFFIOA;
 +
  p_KwdData =  (KwdData_t *) ((char *) p_QDFKDFPM + sizeof(QDFKDFPM_t) );
 +
        memset(Odata->FldCom, ' ',3000);
 +
        memcpy(Odata->FldCom,
 +
                p_KwdData->Temp, p_QDFKDFPM->WDFKDFLN);
 +
 
 +
        }
 +
 
 
     }
 
     }
−
    /* If this point is reached, the field was not found */
+
 
−
         printf("\nThe requested field was not found %s %s",MyRec,MyField);
+
 
−
     return (0);
+
}
−
  }
+
 
 +
  /* ######################################### */
 +
 
 +
int ProcessCat24() {
 +
      /*-----------------------------------------------*/
 +
      /* This loops through all keywords that fall into*/
 +
      /* category 24  (Date, Time)                    */
 +
      /*-----------------------------------------------*/
 +
         memcpy(Odata->FldNam,"         ",10);
 +
        memset(Odata->FldCom, ' ',3000);
 +
}
 +
 
 +
 
 +
 
 +
RTVFLDCL2
 +
PGM  (&LIB  &FILE)
 +
 +
/* CRTBNDCL  PGM(urlib/RTVFLDCL2)  SRCFILE(urlib/C)  */
 +
/*            SRCMBR(RTVFLDCL2)  REPLACE(*YES)        */
 +
 +
 +
DCL  &LIB  *CHAR 10
 +
DCL  &FILE *CHAR 10
 +
 +
CALL  RTVFLD2 (&LIB  &FILE)
 +
 +
RCLACTGRP ACTGRP(DISPINFO2)
 +
 +
 +
ENDPGM
 +
 
 +
RTVFLD2
 +
 
 +
    /* CRTRPGMOD MODULE(urlib/RTVFLD2) SRCFILE(urlib/C)                    */
 +
    /*        SRCMBR(RTVFLD2) REPLACE(*YES)                                */
 +
 
 +
 
 +
 
 +
    /* CRTPGM PGM(urlib/RTVFLD2)                                        */
 +
    /*      MODULE(urlib/RTVFLD2 urlib/DISPINFOC2)                  */
 +
    /*      ACTGRP(DISPINFO2)                                              */
 +
 
 +
 
 +
    h Option(*NODEBUGIO)
 +
 
 +
    D RTVFLD2        PR
 +
    D                              10A
 +
    D                              10A
 +
 
 +
    D RTVFLD2        PI
 +
    D iLib                          10A
 +
    D iFile                        10A
 +
 
 +
    D DISPINFOC      PR                  EXTPROC('DISPINFOC2')
 +
    D Lib                          10A  const
 +
    D File                          10A  const
 +
    D oRecord                      10A  const
 +
    D oField                        10A  const
 +
    D oFld                          10I 0 const
 +
    D Func                          10A  const
 +
    D Fdata                              like(RTVDATA)
 +
          // returned data
 +
 
 +
    D RTVDATA        DS
 +
    D RecordName                    10A
 +
    D ROW                            1A
 +
    D COL                            1A
 +
    D FldIO                          1A
 +
    D FldAtr                        1A
 +
    D FldNam                        10A
 +
    D FldCom                      3000A
 +
    D FLdPlen                      10I 0
 +
    D FldDec                        10I 0
 +
    D EndDta                        10I 0
 +
    D NumFld                        10I 0
 +
 
 +
    D oRecordName     S            10A
 +
    D oFldNam        S            10A
 +
    D oFld            S            10I 0
 +
 
 +
 
 +
      /free
 +
 
 +
          *INLR = *ON;
 +
 
 +
        CALLP  DISPINFOC( iLib  : iFile    : '  ': '  ' : 0 :
 +
                  '#FIRST    ' : RTVDATA  );
 +
 
 +
        DOW (EndDta = 0);
 +
 
 +
                    oRecordName =    RecordName ;
 +
                    oFldNam      =    FldNam    ;
 +
                    oFld        =    NumFld    ;
 +
 
 +
      // To get the next record the previous fields info is also passed
 +
        CALLP  DISPINFOC(iLib  :  iFile    :
 +
                        oRecordName  :
 +
                        oFldNam      :
 +
                        oFld        :
 +
                      '#NEXT    ' : RTVDATA  );
 +
 
 +
        ENDDO;
 +
 
 +
      /end-free
 +
 
 +
 +
 
  
 
</pre>
 
</pre>
 +
[[#top]]
 +
 +
 +
http://wiki.midrange.com/images/5/5c/QDFRTVDS_links.jpg

Latest revision as of 00:36, 4 November 2014


Introduction

C version of the RPG prpgram DSPINFO. This program works differently to the RPG version. I coded it to return only one field or constant at a time. So to see all the fields in a DSPF it needs to loop.

DISPINFOC is coded quite inefficiently but it still works quite fast. It retreives the API data for every time it is called then iterates though all the fields. I coded it this way so as to hide the API retreival within DISPINFOC.

The 2 versions below are more efficient.

I did not include any of the logic to retreive FILE, RECORD, or FIELD attributes. Also there is no logic for any other caterories (eg Date/Time) other than Cat 23 (Conatants)


DISPINFOC


 /* Function: This program uses the QDFRTVFD API to return the */
 /* structure of a display file.  */


 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include "QSYSINC/H/QUSEC"
 #include "QSYSINC/H/QDFRTVFD"

 #define EQ      ==

 #define fail() do { printf("\nLine %d FAILED in file %s", \
 __LINE__,__FILE__); \
 } while(0)

/* Pointers to structures required to be used by this program. */
 QDFFBASE_t *p_QDFFBASE;
 QDFFINFO_t *p_QDFFINFO;
 QDFARFTE_t *p_QDFARFTE;
 QDFFRINF_t *p_QDFFRINF;
 QDFFDPDD_t *p_QDFFDPDD;
 QDFFRDPD_t *p_QDFFRDPD;
 QDFWFLEI_t *p_QDFWFLEI;
 QDFFNTBL_t *p_QDFFNTBL;
 QDFWRCDI_t *p_QDFWRCDI;
 QDFWFLDI_t *p_QDFWFLDI;
 QDFFSFCR_t *p_QDFFSFCR;
 QDFFSFHR_t *p_QDFFSFHR;
 QDFFSCRA_t *p_QDFFSCRA;
 QDFFFITB_t *p_QDFFFITB;
 QDFFFINF_t *p_QDFFFINF;
 QDFFFCON_t *p_QDFFFCON;
 QDFFFDPD_t *p_QDFFFDPD;
 QDFFFNAM_t *p_QDFFFNAM;
 QDFFFDIC_t *p_QDFFFDIC;
 QDFFXFDP_t *p_QDFFXFDP;
 QDFFRCTB_t *p_QDFFRCTB;
 QDFFRCTE_t *p_QDFFRCTE;
 QDFFNTB_t  *p_QDFFNTB;
 QDFFCOSA_t *p_QDFFCOSA;
 QDFFCCOA_t *p_QDFFCCOA;
 QDFKMFDK_t *p_QDFKMFDK;
 QDFKDFT_t  *p_QDFKDFT;
 QDFKEDTR_t *p_QDFKEDTR;
 QDFKDFPM_t *p_QDFKDFPM;


    /* Global variables */
    char *p_iLib;
    char *p_iFile;
    char *p_iRecord;
    char *p_iField;
    int  *p_iNumFld;
    char *p_iFunc;

 /* returned data   */
typedef struct FieldData {
    char RecordName[10];
    char ROW[1];
    char COL[1];
    char FldIO[1];
    char FldAtr[1];
    char FldNam[10];
    char FldCom[3000];
    int  FldPlen;
    int  FldDec;
    int  EndDta;
    int  NumFld;
  } FieldData_t;

 FieldData_t *p_FieldData;
 FieldData_t *Odata;

    typedef struct inputArguments
    {
        char *pgmname;
        char *iLib;
        char *iFile;
        char *iRecord;
        char *iField;
        int  *iFld;
        char *iFunc;
        FieldData_t *iOdata;
    } main_args_t;


    int ProcessRec (void);
    int ProcessField (int *);
    int ProcessCons(void);
    int ProcessCat22(void);
    int ProcessCat23(void);
    int ProcessCat24(void);

    int RecIndex;

   /* Area into which the QDFRTVFD returns  the requested data.*/
    char *ReturnVar;


    char FileName[20] = "                    ";
    char Format[8];
    int  EndFlds = 0;

    /* 4 bytes WDFFRETN Length of the returned data. */
    /* 4 bytes WDFFSIZE Size of the display file description */
    typedef struct RtvSizeInfo
    {
        int ReturnLen;
        int ReturnSiz;
    } RtvSizeInfo_t;



   /* ########################################################  */
 int main(int argc, main_args_t *main_args)
 {

    RtvSizeInfo_t *RtvSize;
    Qus_EC_t Error_Code = {0};



    int  API_Len;

    p_iFile   =  main_args->iFile;
    p_iLib    =  main_args->iLib;
    p_iRecord =  main_args->iRecord;
    p_iField  =  main_args->iField;
    p_iNumFld =  main_args->iFld;
    p_iFunc   =  main_args->iFunc;
    Odata     =  main_args->iOdata;

/* Define the API format requested and the display file to access */
    memcpy(Format,"DSPF0100",8);

/* Point to your DSPF */
    memmove(FileName,p_iFile, strlen(p_iFile));
    memmove(FileName + 10 ,p_iLib, strlen(p_iLib ));


 /* Invoke the API. */
    RtvSize =  malloc(8);
    QDFRTVFD (RtvSize,
                8,
                Format,
                FileName,
                &Error_Code);
    if ( Error_Code.Bytes_Available != 0 ) {
            fail();
            exit (1);
    }
    API_Len  =  RtvSize->ReturnSiz;
    free(RtvSize);

    ReturnVar =  malloc(API_Len);
    QDFRTVFD (ReturnVar,
                API_Len,
                Format,
                FileName,
                &Error_Code);
    if ( Error_Code.Bytes_Available != 0 ) {
            fail();
            printf( "\nExcId: %s" , Error_Code.Exception_Id );
            exit (1);
    }


    ProcessRec();


   free(ReturnVar);
 }
  /* ######################################### */
int ProcessRec() {

    int  NumRecs;
    int i;
    int GotIt = 0;
    /* Access returned structures. The base structure starts at */
    /* the begining of the returned space. */
     p_QDFFBASE = (QDFFBASE_t *)ReturnVar;
     p_QDFFINFO = (QDFFINFO_t *)((char *) p_QDFFBASE + p_QDFFBASE->WDFFINOF);
     p_QDFARFTE = (QDFARFTE_t *)((char *) p_QDFFINFO + p_QDFFINFO->WDFFDFLO);
     p_QDFWFLEI = (QDFWFLEI_t *)((char *) p_QDFFINFO + p_QDFFINFO->WDFFWUOF);
     p_QDFFDPDD = (QDFFDPDD_t *)((char *) p_QDFFINFO + p_QDFFINFO->WDFFXDOF);
     p_QDFWRCDI = (QDFWRCDI_t *)((char *) p_QDFWFLEI + p_QDFWFLEI->WDFWXLEN);
     p_QDFFNTBL = (QDFFNTBL_t *)((char *) p_QDFWFLEI + p_QDFWFLEI->WDFWNTBO);

    /*  here is the place to retreive File Keywords */

     NumRecs = p_QDFFBASE->WDFFRCS;

     for (i=0; i< NumRecs ; ++i) {

         /* Bump ptr to next record structure */
      if  (i  != 0)
     {p_QDFWRCDI = (QDFWRCDI_t *)((char *) p_QDFWRCDI + p_QDFWRCDI->WDFWNXTR);
      p_QDFARFTE = (QDFARFTE_t *)((char *) p_QDFARFTE + sizeof(QDFARFTE_t));   }

     memcpy(Odata->RecordName,
            p_QDFARFTE->WDFARFNM,sizeof(p_QDFARFTE->WDFARFNM));

    if  (i EQ NumRecs - 1) {
      EndFlds = 1;
      }

     ProcessField(&GotIt);



    }

 }

  /* ######################################### */

int ProcessField(int *GotIt) {
      int SflCtl;
      int SizeIdx;
      int FldIdx;
      int NumFlds;
      char ScrnSize[1];
      char Attrib[1];
      char X01     =  0x01 ;
      char Functn[10] = "          ";

       NumFlds = 0;

      /*  record header   */
       p_QDFFRINF = (QDFFRINF_t *)((char *) p_QDFFINFO + p_QDFARFTE->WDFARFOF);
      /*  record dev dept  */
       p_QDFFRDPD = (QDFFRDPD_t *)((char *) p_QDFFRINF + p_QDFFRINF->WDFFRAOF);
      /*  SFLCTL                                                              */
      /* 12  C       BIN(31) WDFFRFLG    Miscellaneous record contents.       */
      /* 12  C   0   BIT(1)  WDFFUDDS    If on, USRDFN keyword is specified.  */
      /* 12  C   1   BIT(1)  WDFFSFL If on, SFL keyword is specified (next rec*/
      /* 12  C   2   BIT(1)  WDFFSFLC    If on, SFLCTL keyword is specified (p*/
       SflCtl = 0;
       if (p_QDFFRINF->WDFFRFLG.WDFFSFLC)
        {  SflCtl = 1;
     p_QDFFSFCR  = (QDFFSFCR_t *)((char *) p_QDFFRINF + p_QDFFRINF->WDFFRAOF);
     p_QDFFSFHR  = (QDFFSFHR_t *)((char *) p_QDFFSFCR + sizeof(QDFFSFCR_t));
         }

     for (SizeIdx=0; SizeIdx<p_QDFFBASE->WDFFSCR ; ++SizeIdx) {
     p_QDFFSCRA  = (QDFFSCRA_t *)((char *) p_QDFFBASE + sizeof(QDFFBASE_t)
                          + sizeof(QDFFSCRA_t) * SizeIdx    ) ;
    *ScrnSize =  p_QDFFSCRA->WDFFSCIA ;
     }
    /* Find RowColumn table. Note: this is the first row/col table */
    /* so this code only works for the PRIMARY DISPLAY SIZE. */
    /* See QDFFRDPD.WDFFDRCO field description for finding the */
    /* correct QDFFRCTB structure if more than one screen size is */
    /* used. */
      p_QDFFRCTB = (QDFFRCTB_t *)((char *) p_QDFFRINF + p_QDFFRDPD->WDFFDRCO);

    /********  HERE include code for Record Keywords ********/

    /*  PROCESS THE RECORDS FIELDS    */
        /* Find where used section */

      p_QDFWFLDI = (QDFWFLDI_t *)((char *) p_QDFWRCDI + p_QDFWRCDI->WDFWRLEN);
      p_QDFFFITB = (QDFFFITB_t *)((char *) p_QDFFRINF + p_QDFFRINF->WDFFOFIT
                   +  ( p_QDFWFLDI->WDFWRRDX -1) * sizeof(QDFFFITB_t));


    for (FldIdx=0; FldIdx < p_QDFFRINF->WDFFFLD; ++FldIdx) {

       /* Field Header  */
     p_QDFFFINF = (QDFFFINF_t *)((char *) p_QDFFRINF + p_QDFFFITB->WDFFFOFS);

    if (p_QDFFFINF->WDFFFIOA EQ 0x01)  {
      /* constant  */
     p_QDFFFCON = (QDFFFCON_t *)((char *) p_QDFFFINF + sizeof(QDFFFINF_t));
     p_QDFFFDPD = (QDFFFDPD_t *)((char *) p_QDFFFINF + p_QDFFFCON->WDFFFAOC);
    }
    else {
      /*  variable */
     p_QDFFFNAM = (QDFFFNAM_t *)((char *) p_QDFFFINF + sizeof(QDFFFINF_t));
     p_QDFFFDPD = (QDFFFDPD_t *)((char *) p_QDFFFINF + p_QDFFFNAM->WDFFFAOF);
     p_QDFFFDIC = (QDFFFDIC_t *)((char *) p_QDFFFDPD + sizeof(QDFFFDPD_t));
    }
      /* Field Extension  */
     p_QDFFXFDP = (QDFFXFDP_t *)((char *) p_QDFFFINF + p_QDFFFDPD->WDFFXFDO);

      /* Row Column  */
     p_QDFFRCTB = (QDFFRCTB_t *)((char *) p_QDFFRINF + p_QDFFRDPD->WDFFDRCO
                     + (p_QDFWFLDI->WDFWRRDX - 1) *2);
     p_QDFFRCTE = (QDFFRCTE_t *)((char *) p_QDFFRCTB + sizeof(QDFFRCTB_t));

       *Odata->ROW  =  p_QDFFRCTE->WDFFSROW;
       *Odata->COL  =  p_QDFFRCTE->WDFFSCOL;

      /*   here can extract data time flags */

      /* CONSTANTS  */
    if (p_QDFFFINF->WDFFFIOA EQ 0x01)  {
      /* constant  */
      ProcessCons();

    }
    else {
        /*   Field Name   */

       p_QDFFNTB  = (QDFFNTB_t *)((char *) p_QDFFNTBL + sizeof(QDFFNTBL_t)
                          +  10 * (p_QDFWFLDI->WDFWNMEI -1) );


      /*Field attribute.  */
      /*X'01' indicates Constant (see structure QDFFFCON, Constant Field  */
      /*X'02' indicates Output (O), */
      /*X'03' indicates Message (M), h (B), */
      /*X'04' indicates Input (I),  (P)  */
      /*X'05' indicates Both (B), */
      /*X'06' indicates Hidden (H), and */
      /*X'07' indicates Program to System (P) */
       *Odata->FldIO     = p_QDFFFINF->WDFFFIOA;

      /* Keyboard shift and data type.  */
      /* X'00' indicates Alpha shift/character (A), */


        *Odata->FldAtr   = p_QDFFFNAM->WDFFKBDT;
        memcpy(Odata->FldNam,
               p_QDFFNTB->WDFFNAM,sizeof(p_QDFFNTB->WDFFNAM));
        memset(Odata->FldCom, ' ',3000);
        Odata->FldPlen  = p_QDFFFNAM->WDFFPLEN;
        Odata->FldDec   = p_QDFFFNAM->WDFFDEC;
    }

   /***********  HERE include code for Field KEYWORDS **********/
      if (FldIdx < p_QDFFRINF->WDFFFLD -1) {
       p_QDFWFLDI = (QDFWFLDI_t *)((char *) p_QDFWFLDI + p_QDFWFLDI->WDFWFLDL);
       p_QDFFFITB = (QDFFFITB_t *)((char *) p_QDFFRINF + p_QDFFRINF->WDFFOFIT
                   +  ( p_QDFWFLDI->WDFWRRDX -1) * sizeof(QDFFFITB_t));
       }

      NumFlds += 1;

       Odata->NumFld = NumFlds;
       Odata->EndDta   = 0;

   /* End ofthe Fields  */
      if ((EndFlds EQ 1) && (FldIdx EQ p_QDFFRINF->WDFFFLD -1) ) {
        Odata->EndDta   = 1;
         *GotIt = 1;
       };

       /* Return the requested Field  */
       memmove(Functn,p_iFunc, strlen(p_iFunc));

        if (!memcmp(Functn , "#FIRST", 6)) {
            *GotIt = 1;
          };

        if (*GotIt)  {
            *GotIt  = 0;
            free(ReturnVar);
            exit(0);
          };

    /* We know we are about to get the NEXT record when we have */
    /* found the record just before                             */

      if (!memcmp(Functn , "#NEXT" , 5) &&
       !memcmp(p_iRecord, Odata->RecordName, 10) &&
       !memcmp(p_iField, Odata->FldNam, 10 ) &&
        (*p_iNumFld  EQ  NumFlds))
       *GotIt = 1;


    }

 }

  /* ######################################### */

int ProcessCons() {
      /*------------------------------------------------*/
      /* This loops through all keyword categories      */
      /*  for a constant field (text on the screen.)    */
      /*------------------------------------------------*/

   int cc;

     if   (p_QDFFFDPD->WDFFFDOC > 0) {

   /* p_QDFFRINF = (QDFFRINF_t *)((char *) p_QDFFINFO + p_QDFFFINF );*/
   /* p_QDFFRINF  = p_QDFFINFO + QDFARFTE.WDFARFOF */

         p_QDFFCOSA = (QDFFCOSA_t *) ((char *) p_QDFFFINF +
                                                p_QDFFFDPD->WDFFFDOC);
       cc = 0;
       for (cc=0; cc<=p_QDFFCOSA->WDFFCCT -1 ; ++cc) {

          p_QDFFCCOA  = (QDFFCCOA_t *)((char *) p_QDFFCOSA +
                             sizeof(QDFFCOSA_t) + sizeof(QDFFCCOA_t) * cc);


           if (p_QDFFCCOA->WDFFCAID EQ 0x22) {
              p_QDFKMFDK = (QDFKMFDK_t *)((char *) p_QDFFFINF  +
                                                p_QDFFCCOA->WDFFCAOF);
              ProcessCat22();
            }


           if (p_QDFFCCOA->WDFFCAID EQ 0x23) {
              p_QDFKDFT  = (QDFKDFT_t *)((char *) p_QDFFFINF  +
                                                p_QDFFCCOA->WDFFCAOF);
              ProcessCat23();
            }


           if (p_QDFFCCOA->WDFFCAID EQ 0x24) {
              p_QDFKEDTR = (QDFKEDTR_t *)((char *) p_QDFFFINF  +
                                                p_QDFFCCOA->WDFFCAOF);
              ProcessCat24();
            }

       }




     }


 }

  /* ######################################### */

int ProcessCat22() {
      /*-----------------------------------------------*/
      /* This loops through all keywords that fall into*/
      /*  category 22                                  */
      /*-----------------------------------------------*/
}

  /* ######################################### */

int ProcessCat23() {
      /*------------------------------------------------*/
      /* This loops through all keywords that fall into */
      /*  category 23 (DFT, MSGCON, DFTVAL, HTML)       */
      /*------------------------------------------------*/
 typedef _Packed struct  KwdData {
    char Temp[3000];
} KwdData_t;

   KwdData_t  *p_KwdData;
   int        ck;

  for (ck=1; ck <= p_QDFKDFT->WDFKDFS ; ++ck) {

    if   (ck EQ 1 )  {
     p_QDFKDFPM = (QDFKDFPM_t *)((char *) p_QDFKDFT + sizeof(QDFKDFT_t));  }
    else
    {p_QDFKDFPM = (QDFKDFPM_t *)((char *) p_QDFKDFPM  + sizeof(QDFKDFPM_t)); }

        if (p_QDFKDFPM->WDFKDFID EQ 0x01)  {

        memcpy(Odata->FldNam,"          ",10);

        Odata->FldPlen  = p_QDFKDFPM->WDFKDFLN;
        *Odata->FldIO   = p_QDFFFINF->WDFFFIOA;
  p_KwdData =  (KwdData_t *) ((char *) p_QDFKDFPM + sizeof(QDFKDFPM_t) );
        memset(Odata->FldCom, ' ',3000);
        memcpy(Odata->FldCom,
                p_KwdData->Temp, p_QDFKDFPM->WDFKDFLN);

        }

    }


}

  /* ######################################### */

int ProcessCat24() {
      /*-----------------------------------------------*/
      /* This loops through all keywords that fall into*/
      /*  category 24  (Date, Time)                    */
      /*-----------------------------------------------*/
        memcpy(Odata->FldNam,"          ",10);
        memset(Odata->FldCom, ' ',3000);
}

#top

RTVFLD (RPG code DISPINFOC driver)

RPG Driver program for DISPINFOC This program is coded to loop to invoke DISPINFOC for one field at a time.

It needs to pass a parameter (#FIRST | #NEXT) to tell DISPINFOC what to do. 

     h Option(*NODEBUGIO)  DFTACTGRP(*NO)

     D RTVFLD          PR
     D                               10A
     D                               10A

     D RTVFLD          PI
     D iLib                          10A
     D iFile                         10A

     D DISPINFOC       PR                  ExtPgm('DISPINFOC')
     D Lib                           10A   const
     D File                          10A   const
     D oRecord                       10A   const
     D oField                        10A   const
     D oFld                          10I 0 const
     D Func                          10A   const
     D Fdata                               like(RTVDATA)
           // returned data
     D RTVDATA         DS
     D RecordName                    10A
     D ROW                            1A
     D COL                            1A
     D FldIO                          1A
     D FldAtr                         1A
     D FldNam                        10A
     D FldCom                      3000A
     D FLdPlen                       10I 0
     D FldDec                        10I 0
     D EndDta                        10I 0
     D NumFld                        10I 0

     D oRecordName     S             10A
     D oFldNam         S             10A
     D oFld            S             10I 0

      /free

          *INLR = *ON;

          DISPINFOC( iLib  : iFile    : '  ': '  ' : 0   :
                    '#FIRST' : RTVDATA   );

        DOW (EndDta = 0);

                    oRecordName  =    RecordName ;
                    oFldNam      =    FldNam     ;
                    oFld         =    NumFld     ;

       // To get the next record the previous fields info is also passed
          DISPINFOC(iLib   :  iFile    :
                    oRecordName  :
                    oFldNam      :
                    oFld         :
                    '#NEXT ' : RTVDATA   );

        ENDDO;

      /end-free

#top

DISPINFOC1 Version with User Space

 
/* Function: This program uses the QDFRTVFD API to return the */
/* structure of a display file.  */
 

DISPINFOC1
 
 
 /* Function: This program uses the QDFRTVFD API to return the */
 /* structure of a display file.  */


 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include "QSYSINC/H/QUSEC"
 #include "QSYSINC/H/QDFRTVFD"

 #include <mispace.h>
 #include <pointer.h>
 #include <mispcobj.h>
 #include <except.h>
 #include <qtes.h>


    /* Link up the Create User Space API */
    #pragma linkage(CreateUserSpace,OS)
    #pragma map(CreateUserSpace,"QUSCRTUS")

    void    CreateUserSpace(char[20],
                        char[10],
                        long int,
                        char,
                        char[10],
                        char[50],
                        char[10],
                        _TE_ERROR_CODE_T *
                        );

    /* Link up the Delete User Space API */
    #pragma linkage(DeleteUserSpace,OS)
    #pragma map(DeleteUserSpace,"QUSDLTUS")
    void    DeleteUserSpace(char[20],
                        _TE_ERROR_CODE_T *
                        );

    /* Link up the Retrieve Pointer to User Space API */
    #pragma linkage(RetrievePointerToUserSpace,OS)
    #pragma map(RetrievePointerToUserSpace,"QUSPTRUS")
    void RetrievePointerToUserSpace(char[20],
                                char **,
                                _TE_ERROR_CODE_T *
                                );


 #define EQ      ==

 #define fail() do { printf("\nLine %d FAILED in file %s", \
 __LINE__,__FILE__); \
 } while(0)

/* Pointers to structures required to be used by this program. */
 QDFFBASE_t *p_QDFFBASE;
 QDFFINFO_t *p_QDFFINFO;
 QDFARFTE_t *p_QDFARFTE;
 QDFFRINF_t *p_QDFFRINF;
 QDFFDPDD_t *p_QDFFDPDD;
 QDFFRDPD_t *p_QDFFRDPD;
 QDFWFLEI_t *p_QDFWFLEI;
 QDFFNTBL_t *p_QDFFNTBL;
 QDFWRCDI_t *p_QDFWRCDI;
 QDFWFLDI_t *p_QDFWFLDI;
 QDFFSFCR_t *p_QDFFSFCR;
 QDFFSFHR_t *p_QDFFSFHR;
 QDFFSCRA_t *p_QDFFSCRA;
 QDFFFITB_t *p_QDFFFITB;
 QDFFFINF_t *p_QDFFFINF;
 QDFFFCON_t *p_QDFFFCON;
 QDFFFDPD_t *p_QDFFFDPD;
 QDFFFNAM_t *p_QDFFFNAM;
 QDFFFDIC_t *p_QDFFFDIC;
 QDFFXFDP_t *p_QDFFXFDP;
 QDFFRCTB_t *p_QDFFRCTB;
 QDFFRCTE_t *p_QDFFRCTE;
 QDFFNTB_t  *p_QDFFNTB;
 QDFFCOSA_t *p_QDFFCOSA;
 QDFFCCOA_t *p_QDFFCCOA;
 QDFKMFDK_t *p_QDFKMFDK;
 QDFKDFT_t  *p_QDFKDFT;
 QDFKEDTR_t *p_QDFKEDTR;
 QDFKDFPM_t *p_QDFKDFPM;


    /* Global variables */
    char *p_iLib;
    char *p_iFile;
    char *p_iRecord;
    char *p_iField;
    int  *p_iNumFld;
    char *p_iFunc;

 /* returned data   */
typedef struct FieldData {
    char RecordName[10];
    char ROW[1];
    char COL[1];
    char FldIO[1];
    char FldAtr[1];
    char FldNam[10];
    char FldCom[3000];
    int  FldPlen;
    int  FldDec;
    int  EndDta;
    int  NumFld;
  } FieldData_t;

 FieldData_t *p_FieldData;
 FieldData_t *Odata;

    typedef struct inputArguments
    {
        char *pgmname;
        char *iLib;
        char *iFile;
        char *iRecord;
        char *iField;
        int  *iFld;
        char *iFunc;
        FieldData_t *iOdata;
    } main_args_t;

    int RtvApiDta (void);
    int ProcessRec (void);
    int ProcessField (int *);
    int ProcessCons(void);
    int ProcessCat22(void);
    int ProcessCat23(void);
    int ProcessCat24(void);

    int RecIndex;

   /* Area into which the QDFRTVFD returns  the requested data.*/

    char *pBuffer;
    _TE_ERROR_CODE_T errorCode;


    char FileName[20] = "                    ";
    char Format[8];
    int  EndFlds = 0;

    /* 4 bytes WDFFRETN Length of the returned data. */
    /* 4 bytes WDFFSIZE Size of the display file description */
    typedef struct RtvSizeInfo
    {
        int ReturnLen;
        int ReturnSiz;
    } RtvSizeInfo_t;



   /* ########################################################  */
 int main(int argc, main_args_t *main_args)
 {

    char Funct[10] = "          ";

    p_iFile   =  main_args->iFile;
    p_iLib    =  main_args->iLib;
    p_iRecord =  main_args->iRecord;
    p_iField  =  main_args->iField;
    p_iNumFld =  main_args->iFld;
    p_iFunc   =  main_args->iFunc;
    Odata     =  main_args->iOdata;



       /* On First pass get the API data */
       memmove(Funct,p_iFunc, strlen(p_iFunc));
         if (!memcmp(Funct, "#FIRST", 6)) {
            RtvApiDta();
            };

         if (!memcmp(Funct, "#NEXT", 5)) {
    /*! call RetrievePointerToUserSpace - Retrieve Pointer to User Space */
           errorCode.BytesProvided = 0;
           RetrievePointerToUserSpace("RTVFDUSPC QTEMP      ",
                            &pBuffer,
                            &errorCode);
       }

    ProcessRec();


     /*  free(ReturnVar);  */
 }




  /* ######################################### */

    RtvApiDta() {

    RtvSizeInfo_t *RtvSize;
    int  API_Len;

    Qus_EC_t Error_Code = {0};


    /* Define the API format requested and the display file to access */
    memcpy(Format,"DSPF0100",8);
    /* Point to your DSPF */
    memmove(FileName,p_iFile, strlen(p_iFile));
    memmove(FileName + 10 ,p_iLib, strlen(p_iLib ));

    /* Invoke the API. to get the size needed */
    RtvSize =  malloc(8);
    QDFRTVFD (RtvSize,
                8,
                Format,
                FileName,
                &Error_Code);
    if ( Error_Code.Bytes_Available != 0 ) {
            fail();
            exit (1);
    }
    API_Len  =  RtvSize->ReturnSiz;
    free(RtvSize);

    CreateUserSpace("RTVFDUSPC QTEMP      ",
                    "USRSPC    ",
                    API_Len,
                    0,
                    "*ALL      ",
                    " ",
                    "*YES      ",
                    &errorCode
                    );

    /*! call RetrievePointerToUserSpace - Retrieve Pointer to User Space */
    /*!! (pass: Name and library of user space, pointer variable */
    /*!! return: nothing (pointer variable is left pointing to start*/
    /*!! of user space) */
       errorCode.BytesProvided = 0;
       RetrievePointerToUserSpace("RTVFDUSPC QTEMP      ",
                            &pBuffer,
                            &errorCode);

    QDFRTVFD (pBuffer,
                API_Len,
                Format,
                FileName,
                &Error_Code);
    if ( Error_Code.Bytes_Available != 0 ) {
            fail();
            printf( "\nExcId: %s" , Error_Code.Exception_Id );
            exit (1);
    }
}




  /* ######################################### */
int ProcessRec() {

    int  NumRecs;
    int i;
    int GotIt = 0;
    /* Access returned structures. The base structure starts at */
    /* the begining of the returned space. */
     p_QDFFBASE = (QDFFBASE_t *)pBuffer;
     p_QDFFINFO = (QDFFINFO_t *)((char *) p_QDFFBASE + p_QDFFBASE->WDFFINOF);
     p_QDFARFTE = (QDFARFTE_t *)((char *) p_QDFFINFO + p_QDFFINFO->WDFFDFLO);
     p_QDFWFLEI = (QDFWFLEI_t *)((char *) p_QDFFINFO + p_QDFFINFO->WDFFWUOF);
     p_QDFFDPDD = (QDFFDPDD_t *)((char *) p_QDFFINFO + p_QDFFINFO->WDFFXDOF);
     p_QDFWRCDI = (QDFWRCDI_t *)((char *) p_QDFWFLEI + p_QDFWFLEI->WDFWXLEN);
     p_QDFFNTBL = (QDFFNTBL_t *)((char *) p_QDFWFLEI + p_QDFWFLEI->WDFWNTBO);

    /*  here is the place to retreive File Keywords */

     NumRecs = p_QDFFBASE->WDFFRCS;

     for (i=0; i< NumRecs ; ++i) {

         /* Bump ptr to next record structure */
      if  (i  != 0)
     {p_QDFWRCDI = (QDFWRCDI_t *)((char *) p_QDFWRCDI + p_QDFWRCDI->WDFWNXTR);
      p_QDFARFTE = (QDFARFTE_t *)((char *) p_QDFARFTE + sizeof(QDFARFTE_t));   }

     memcpy(Odata->RecordName,
            p_QDFARFTE->WDFARFNM,sizeof(p_QDFARFTE->WDFARFNM));

    if  (i EQ NumRecs - 1) {
      EndFlds = 1;
      }

     ProcessField(&GotIt);



    }

 }

  /* ######################################### */

int ProcessField(int *GotIt) {

      int SflCtl;
      int SizeIdx;
      int FldIdx;
      int NumFlds;
      char ScrnSize[1];
      char Attrib[1];
      char X01     =  0x01 ;
      char Functn[10] = "          ";

      NumFlds = 0;

      /*  record header   */
       p_QDFFRINF = (QDFFRINF_t *)((char *) p_QDFFINFO + p_QDFARFTE->WDFARFOF);
      /*  record dev dept  */
       p_QDFFRDPD = (QDFFRDPD_t *)((char *) p_QDFFRINF + p_QDFFRINF->WDFFRAOF);
      /*  SFLCTL                                                              */
      /* 12  C       BIN(31) WDFFRFLG    Miscellaneous record contents.       */
      /* 12  C   0   BIT(1)  WDFFUDDS    If on, USRDFN keyword is specified.  */
      /* 12  C   1   BIT(1)  WDFFSFL If on, SFL keyword is specified (next rec*/
      /* 12  C   2   BIT(1)  WDFFSFLC    If on, SFLCTL keyword is specified (p*/
       SflCtl = 0;
       if (p_QDFFRINF->WDFFRFLG.WDFFSFLC)
        {  SflCtl = 1;
     p_QDFFSFCR  = (QDFFSFCR_t *)((char *) p_QDFFRINF + p_QDFFRINF->WDFFRAOF);
     p_QDFFSFHR  = (QDFFSFHR_t *)((char *) p_QDFFSFCR + sizeof(QDFFSFCR_t));
         }

     for (SizeIdx=0; SizeIdx<p_QDFFBASE->WDFFSCR ; ++SizeIdx) {
     p_QDFFSCRA  = (QDFFSCRA_t *)((char *) p_QDFFBASE + sizeof(QDFFBASE_t)
                          + sizeof(QDFFSCRA_t) * SizeIdx    ) ;
    *ScrnSize =  p_QDFFSCRA->WDFFSCIA ;
     }
    /* Find RowColumn table. Note: this is the first row/col table */
    /* so this code only works for the PRIMARY DISPLAY SIZE. */
    /* See QDFFRDPD.WDFFDRCO field description for finding the */
    /* correct QDFFRCTB structure if more than one screen size is */
    /* used. */
      p_QDFFRCTB = (QDFFRCTB_t *)((char *) p_QDFFRINF + p_QDFFRDPD->WDFFDRCO);

    /********  HERE include code for Record Keywords ********/

    /*  PROCESS THE RECORDS FIELDS    */
        /* Find where used section */

      p_QDFWFLDI = (QDFWFLDI_t *)((char *) p_QDFWRCDI + p_QDFWRCDI->WDFWRLEN);
      p_QDFFFITB = (QDFFFITB_t *)((char *) p_QDFFRINF + p_QDFFRINF->WDFFOFIT
                   +  ( p_QDFWFLDI->WDFWRRDX -1) * sizeof(QDFFFITB_t));


    for (FldIdx=0; FldIdx < p_QDFFRINF->WDFFFLD; ++FldIdx) {

       /* Field Header  */
     p_QDFFFINF = (QDFFFINF_t *)((char *) p_QDFFRINF + p_QDFFFITB->WDFFFOFS);

    if (p_QDFFFINF->WDFFFIOA EQ 0x01)  {
      /* constant  */
     p_QDFFFCON = (QDFFFCON_t *)((char *) p_QDFFFINF + sizeof(QDFFFINF_t));
     p_QDFFFDPD = (QDFFFDPD_t *)((char *) p_QDFFFINF + p_QDFFFCON->WDFFFAOC);
    }
    else {
      /*  variable */
     p_QDFFFNAM = (QDFFFNAM_t *)((char *) p_QDFFFINF + sizeof(QDFFFINF_t));
     p_QDFFFDPD = (QDFFFDPD_t *)((char *) p_QDFFFINF + p_QDFFFNAM->WDFFFAOF);
     p_QDFFFDIC = (QDFFFDIC_t *)((char *) p_QDFFFDPD + sizeof(QDFFFDPD_t));
    }
      /* Field Extension  */
     p_QDFFXFDP = (QDFFXFDP_t *)((char *) p_QDFFFINF + p_QDFFFDPD->WDFFXFDO);

      /* Row Column  */
     p_QDFFRCTB = (QDFFRCTB_t *)((char *) p_QDFFRINF + p_QDFFRDPD->WDFFDRCO
                     + (p_QDFWFLDI->WDFWRRDX - 1) *2);
     p_QDFFRCTE = (QDFFRCTE_t *)((char *) p_QDFFRCTB + sizeof(QDFFRCTB_t));

       *Odata->ROW  =  p_QDFFRCTE->WDFFSROW;
       *Odata->COL  =  p_QDFFRCTE->WDFFSCOL;

      /*   here can extract data time flags */

      /* CONSTANTS  */
    if (p_QDFFFINF->WDFFFIOA EQ 0x01)  {
      /* constant  */
      ProcessCons();

    }
    else {
        /*   Field Name   */

       p_QDFFNTB  = (QDFFNTB_t *)((char *) p_QDFFNTBL + sizeof(QDFFNTBL_t)
                          +  10 * (p_QDFWFLDI->WDFWNMEI -1) );


      /*Field attribute.  */
      /*X'01' indicates Constant (see structure QDFFFCON, Constant Field  */
      /*X'02' indicates Output (O), */
      /*X'03' indicates Message (M), h (B), */
      /*X'04' indicates Input (I),  (P)  */
      /*X'05' indicates Both (B), */
      /*X'06' indicates Hidden (H), and */
      /*X'07' indicates Program to System (P) */
       *Odata->FldIO     = p_QDFFFINF->WDFFFIOA;

      /* Keyboard shift and data type.  */
      /* X'00' indicates Alpha shift/character (A), */


        *Odata->FldAtr   = p_QDFFFNAM->WDFFKBDT;
        memcpy(Odata->FldNam,
               p_QDFFNTB->WDFFNAM,sizeof(p_QDFFNTB->WDFFNAM));
        memset(Odata->FldCom,' ',3000);
        Odata->FldPlen  = p_QDFFFNAM->WDFFPLEN;
        Odata->FldDec   = p_QDFFFNAM->WDFFDEC;
    }

   /***********  HERE include code for Field KEYWORDS **********/
      if (FldIdx < p_QDFFRINF->WDFFFLD -1) {
       p_QDFWFLDI = (QDFWFLDI_t *)((char *) p_QDFWFLDI + p_QDFWFLDI->WDFWFLDL);
       p_QDFFFITB = (QDFFFITB_t *)((char *) p_QDFFRINF + p_QDFFRINF->WDFFOFIT
                   +  ( p_QDFWFLDI->WDFWRRDX -1) * sizeof(QDFFFITB_t));
       }

      NumFlds += 1;

       Odata->NumFld   = NumFlds;
       Odata->EndDta   = 0;

   /* End ofthe Fields  */
      if ((EndFlds EQ 1) && (FldIdx EQ p_QDFFRINF->WDFFFLD -1) ) {
        Odata->EndDta   = 1;
         *GotIt = 1;
        DeleteUserSpace("RTVFDUSPC QTEMP      ",
                        &errorCode);
       };

       /* Return the requested Field  */
       memmove(Functn,p_iFunc, strlen(p_iFunc));

        if (!memcmp(Functn , "#FIRST", 6)) {
            *GotIt = 1;
          };

        if (*GotIt)  {
            *GotIt  = 0;
            exit(0);
          };

    /* We know we are about to get the NEXT record when we have */
    /* found the record just before                             */
      if (!memcmp(Functn , "#NEXT" , 5) &&
       !memcmp(p_iRecord, Odata->RecordName, 10) &&
       !memcmp(p_iField, Odata->FldNam, 10 ) &&
        (*p_iNumFld  EQ  NumFlds))
       *GotIt = 1;




    }

 }

  /* ######################################### */

int ProcessCons() {
      /*------------------------------------------------*/
      /* This loops through all keyword categories      */
      /*  for a constant field (text on the screen.)    */
      /*------------------------------------------------*/

   int cc;

     if   (p_QDFFFDPD->WDFFFDOC > 0) {

   /* p_QDFFRINF = (QDFFRINF_t *)((char *) p_QDFFINFO + p_QDFFFINF );*/
   /* p_QDFFRINF  = p_QDFFINFO + QDFARFTE.WDFARFOF */

         p_QDFFCOSA = (QDFFCOSA_t *) ((char *) p_QDFFFINF +
                                                p_QDFFFDPD->WDFFFDOC);
       cc = 0;
       for (cc=0; cc<=p_QDFFCOSA->WDFFCCT -1 ; ++cc) {

          p_QDFFCCOA  = (QDFFCCOA_t *)((char *) p_QDFFCOSA +
                             sizeof(QDFFCOSA_t) + sizeof(QDFFCCOA_t) * cc);


           if (p_QDFFCCOA->WDFFCAID EQ 0x22) {
              p_QDFKMFDK = (QDFKMFDK_t *)((char *) p_QDFFFINF  +
                                                p_QDFFCCOA->WDFFCAOF);
              ProcessCat22();
            }


           if (p_QDFFCCOA->WDFFCAID EQ 0x23) {
              p_QDFKDFT  = (QDFKDFT_t *)((char *) p_QDFFFINF  +
                                                p_QDFFCCOA->WDFFCAOF);
              ProcessCat23();
            }


           if (p_QDFFCCOA->WDFFCAID EQ 0x24) {
              p_QDFKEDTR = (QDFKEDTR_t *)((char *) p_QDFFFINF  +
                                                p_QDFFCCOA->WDFFCAOF);
              ProcessCat24();
            }

       }




     }


 }

  /* ######################################### */

int ProcessCat22() {
      /*-----------------------------------------------*/
      /* This loops through all keywords that fall into*/
      /*  category 22                                  */
      /*-----------------------------------------------*/
}

  /* ######################################### */

int ProcessCat23() {
      /*------------------------------------------------*/
      /* This loops through all keywords that fall into */
      /*  category 23 (DFT, MSGCON, DFTVAL, HTML)       */
      /*------------------------------------------------*/
 typedef _Packed struct  KwdData {
    char Temp[3000];
} KwdData_t;

   KwdData_t  *p_KwdData;
   int        ck;

  for (ck=1; ck <= p_QDFKDFT->WDFKDFS ; ++ck) {

    if   (ck EQ 1 )  {
     p_QDFKDFPM = (QDFKDFPM_t *)((char *) p_QDFKDFT + sizeof(QDFKDFT_t));  }
    else
    {p_QDFKDFPM = (QDFKDFPM_t *)((char *) p_QDFKDFPM  + sizeof(QDFKDFPM_t)); }

        if (p_QDFKDFPM->WDFKDFID EQ 0x01)  {

        memcpy(Odata->FldNam,"          ",10);

        Odata->FldPlen  = p_QDFKDFPM->WDFKDFLN;
        *Odata->FldIO   = p_QDFFFINF->WDFFFIOA;
  p_KwdData =  (KwdData_t *) ((char *) p_QDFKDFPM + sizeof(QDFKDFPM_t) );
        memset(Odata->FldCom, ' ',3000);
        memcpy(Odata->FldCom,
                p_KwdData->Temp, p_QDFKDFPM->WDFKDFLN);

        }

    }


}

  /* ######################################### */

int ProcessCat24() {
      /*-----------------------------------------------*/
      /* This loops through all keywords that fall into*/
      /*  category 24  (Date, Time)                    */
      /*-----------------------------------------------*/
        memcpy(Odata->FldNam,"          ",10);
        memset(Odata->FldCom, ' ',3000);
}


RTVFLD1

     h Option(*NODEBUGIO)  DFTACTGRP(*NO)

     D RTVFLD1         PR
     D                               10A
     D                               10A

     D RTVFLD1         PI
     D iLib                          10A
     D iFile                         10A

     D DISPINFOC1      PR                  ExtPgm('DISPINFOC1')
     D Lib                           10A   const
     D File                          10A   const
     D oRecord                       10A   const
     D oField                        10A   const
     D oFld                          10I 0 const
     D Func                          10A   const
     D Fdata                               like(RTVDATA)
           // returned data
     D RTVDATA         DS
     D RecordName                    10A
     D ROW                            1A
     D COL                            1A
     D FldIO                          1A
     D FldAtr                         1A
     D FldNam                        10A
     D FldCom                      3000A
     D FLdPlen                       10I 0
     D FldDec                        10I 0
     D EndDta                        10I 0
     D NumFld                        10I 0

     D oRecordName     S             10A
     D oFldNam         S             10A
     D oFld            S             10I 0

      /free

          *INLR = *ON;

          DISPINFOC1( iLib  : iFile    : '  ': '  ' : 0 :
                    '#FIRST' : RTVDATA   );

        DOW (EndDta = 0);

                    oRecordName  =    RecordName ;
                    oFldNam      =    FldNam     ;
                    oFld         =    NumFld     ;

       // To get the next record the previous fields info is also passed
          DISPINFOC1(iLib   :  iFile    :
                    oRecordName  :
                    oFldNam      :
                    oFld         :
                    '#NEXT ' : RTVDATA   );

        ENDDO;

      /end-free

#top

DISPINFOC2 Version with C Module

I needed to drive this fron a CLLE (code is below) because I need a RCLACTGRP DISPINFO2.

Reason is I did a return from the C module, rather than an exit. 



DISPINFOC2
 

 /* Function: This module  uses the QDFRTVFD API to return the */
 /* structure of a display file.  */

 /* CRTCMOD MODULE(urlib/DISPINFOC2) SRCFILE(urlib/C) SRCMBR(DISPINFOC2) */
 /*         REPLACE(*yes)                                                */

 /* bind into your program with                                          */
 /* CRTPGM PGM(urlib/RTVFLD2)                                         */
 /*       MODULE(urlib/RTVFLD2 urlib/DISPINFOC2)                   */
 /*       ACTGRP(DISPINFO2)                                              */



 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include "QSYSINC/H/QUSEC"
 #include "QSYSINC/H/QDFRTVFD"



 #define EQ      ==

 #define fail() do { printf("\nLine %d FAILED in file %s", \
 __LINE__,__FILE__); \
 } while(0)

/* Pointers to structures required to be used by this program. */
 QDFFBASE_t *p_QDFFBASE;
 QDFFINFO_t *p_QDFFINFO;
 QDFARFTE_t *p_QDFARFTE;
 QDFFRINF_t *p_QDFFRINF;
 QDFFDPDD_t *p_QDFFDPDD;
 QDFFRDPD_t *p_QDFFRDPD;
 QDFWFLEI_t *p_QDFWFLEI;
 QDFFNTBL_t *p_QDFFNTBL;
 QDFWRCDI_t *p_QDFWRCDI;
 QDFWFLDI_t *p_QDFWFLDI;
 QDFFSFCR_t *p_QDFFSFCR;
 QDFFSFHR_t *p_QDFFSFHR;
 QDFFSCRA_t *p_QDFFSCRA;
 QDFFFITB_t *p_QDFFFITB;
 QDFFFINF_t *p_QDFFFINF;
 QDFFFCON_t *p_QDFFFCON;
 QDFFFDPD_t *p_QDFFFDPD;
 QDFFFNAM_t *p_QDFFFNAM;
 QDFFFDIC_t *p_QDFFFDIC;
 QDFFXFDP_t *p_QDFFXFDP;
 QDFFRCTB_t *p_QDFFRCTB;
 QDFFRCTE_t *p_QDFFRCTE;
 QDFFNTB_t  *p_QDFFNTB;
 QDFFCOSA_t *p_QDFFCOSA;
 QDFFCCOA_t *p_QDFFCCOA;
 QDFKMFDK_t *p_QDFKMFDK;
 QDFKDFT_t  *p_QDFKDFT;
 QDFKEDTR_t *p_QDFKEDTR;
 QDFKDFPM_t *p_QDFKDFPM;


    /* Global variables */
    char *p_iLib;
    char *p_iFile;
    char *p_iRecord;
    char *p_iField;
    int  *p_iFld;
    char *p_iFunc;

 /* returned data   */
typedef struct FieldData {
    char RecordName[10];
    char ROW[1];
    char COL[1];
    char FldIO[1];
    char FldAtr[1];
    char FldNam[10];
    char FldCom[3000];
    int  FldPlen;
    int  FldDec;
    int  EndDta;
    int  NumFld;
  } FieldData_t;

 FieldData_t *p_FieldData;
 FieldData_t *Odata;


    int RtvApiDta (void);
    int ProcessRec (void);
    int ProcessField (int *);
    int ProcessCons(void);
    int ProcessCat22(void);
    int ProcessCat23(void);
    int ProcessCat24(void);

    int RecIndex;


    char *ReturnVar;



    char FileName[20] = "                    ";
    char Format[8];
    int  EndFlds = 0;

    /* 4 bytes WDFFRETN Length of the returned data. */
    /* 4 bytes WDFFSIZE Size of the display file description */
    typedef struct RtvSizeInfo
    {
        int ReturnLen;
        int ReturnSiz;
    } RtvSizeInfo_t;



   /* ########################################################  */
 int DISPINFOC2
  (   char *p_pLib  ,
      char *p_pFile ,
      char *p_pRecord ,
      char *p_pField ,
      int  *p_pFld ,
      char *p_pFunc ,
     FieldData_t *pOdata)
 {

       char Funct[10] = "          ";

     p_iLib    = p_pLib;
     p_iFile   = p_pFile;
     p_iRecord = p_pRecord;
     p_iField  = p_pField;
     p_iFld    = p_pFld;
     p_iFunc   = p_pFunc;
     Odata     =   pOdata;


       /* On First pass get the API data */
       memmove(Funct,p_iFunc, strlen(p_iFunc));
         if (!memcmp(Funct, "#FIRST", 6)) {
            RtvApiDta();
            };


    ProcessRec();

 }




  /* ######################################### */

    RtvApiDta() {

    RtvSizeInfo_t *RtvSize;
    int  API_Len;

    Qus_EC_t Error_Code = {0};


    /* Define the API format requested and the display file to access */
    memcpy(Format,"DSPF0100",8);
    /* Point to your DSPF */
    memmove(FileName,p_iFile, strlen(p_iFile));
    memmove(FileName + 10 ,p_iLib, strlen(p_iLib ));

    /* Invoke the API. to get the size needed */
    RtvSize =  malloc(8);
    QDFRTVFD (RtvSize,
                8,
                Format,
                FileName,
                &Error_Code);
    if ( Error_Code.Bytes_Available != 0 ) {
            fail();
            exit (1);
    }
    API_Len  =  RtvSize->ReturnSiz;
    free(RtvSize);

    ReturnVar =  malloc(API_Len);
    QDFRTVFD (ReturnVar,
                API_Len,
                Format,
                FileName,
                &Error_Code);
    if ( Error_Code.Bytes_Available != 0 ) {
            fail();
            printf( "\nExcId: %s" , Error_Code.Exception_Id );
            exit (1);
    }
}




  /* ######################################### */
int ProcessRec() {

    int  NumRecs;
    int i;
    int GotIt = 0;
    /* Access returned structures. The base structure starts at */
    /* the begining of the returned space. */
     p_QDFFBASE = (QDFFBASE_t *)ReturnVar;
     p_QDFFINFO = (QDFFINFO_t *)((char *) p_QDFFBASE + p_QDFFBASE->WDFFINOF);
     p_QDFARFTE = (QDFARFTE_t *)((char *) p_QDFFINFO + p_QDFFINFO->WDFFDFLO);
     p_QDFWFLEI = (QDFWFLEI_t *)((char *) p_QDFFINFO + p_QDFFINFO->WDFFWUOF);
     p_QDFFDPDD = (QDFFDPDD_t *)((char *) p_QDFFINFO + p_QDFFINFO->WDFFXDOF);
     p_QDFWRCDI = (QDFWRCDI_t *)((char *) p_QDFWFLEI + p_QDFWFLEI->WDFWXLEN);
     p_QDFFNTBL = (QDFFNTBL_t *)((char *) p_QDFWFLEI + p_QDFWFLEI->WDFWNTBO);

    /*  here is the place to retreive File Keywords */

     NumRecs = p_QDFFBASE->WDFFRCS;

     for (i=0; i< NumRecs ; ++i) {

         /* Bump ptr to next record structure */
      if  (i  != 0)
     {p_QDFWRCDI = (QDFWRCDI_t *)((char *) p_QDFWRCDI + p_QDFWRCDI->WDFWNXTR);
      p_QDFARFTE = (QDFARFTE_t *)((char *) p_QDFARFTE + sizeof(QDFARFTE_t));   }

     memcpy(Odata->RecordName,
            p_QDFARFTE->WDFARFNM,sizeof(p_QDFARFTE->WDFARFNM));

    if  (i EQ NumRecs - 1) {
      EndFlds = 1;
      }

     ProcessField(&GotIt);

        if (GotIt EQ 1)  {
            return(0);
          };


    }

 }

  /* ######################################### */

int ProcessField(int *GotIt) {

      int SflCtl;
      int SizeIdx;
      int FldIdx;
      int NumFlds;
      char ScrnSize[1];
      char Attrib[1];
      char X01     =  0x01 ;
      char Functn[10] = "          ";

       NumFlds = 0;

      /*  record header   */
       p_QDFFRINF = (QDFFRINF_t *)((char *) p_QDFFINFO + p_QDFARFTE->WDFARFOF);
      /*  record dev dept  */
       p_QDFFRDPD = (QDFFRDPD_t *)((char *) p_QDFFRINF + p_QDFFRINF->WDFFRAOF);
      /*  SFLCTL                                                              */
      /* 12  C       BIN(31) WDFFRFLG    Miscellaneous record contents.       */
      /* 12  C   0   BIT(1)  WDFFUDDS    If on, USRDFN keyword is specified.  */
      /* 12  C   1   BIT(1)  WDFFSFL If on, SFL keyword is specified (next rec*/
      /* 12  C   2   BIT(1)  WDFFSFLC    If on, SFLCTL keyword is specified (p*/
       SflCtl = 0;
       if (p_QDFFRINF->WDFFRFLG.WDFFSFLC)
        {  SflCtl = 1;
     p_QDFFSFCR  = (QDFFSFCR_t *)((char *) p_QDFFRINF + p_QDFFRINF->WDFFRAOF);
     p_QDFFSFHR  = (QDFFSFHR_t *)((char *) p_QDFFSFCR + sizeof(QDFFSFCR_t));
         }

     for (SizeIdx=0; SizeIdx<p_QDFFBASE->WDFFSCR ; ++SizeIdx) {
     p_QDFFSCRA  = (QDFFSCRA_t *)((char *) p_QDFFBASE + sizeof(QDFFBASE_t)
                          + sizeof(QDFFSCRA_t) * SizeIdx    ) ;
    *ScrnSize =  p_QDFFSCRA->WDFFSCIA ;
     }
    /* Find RowColumn table. Note: this is the first row/col table */
    /* so this code only works for the PRIMARY DISPLAY SIZE. */
    /* See QDFFRDPD.WDFFDRCO field description for finding the */
    /* correct QDFFRCTB structure if more than one screen size is */
    /* used. */
      p_QDFFRCTB = (QDFFRCTB_t *)((char *) p_QDFFRINF + p_QDFFRDPD->WDFFDRCO);

    /********  HERE include code for Record Keywords ********/

    /*  PROCESS THE RECORDS FIELDS    */
        /* Find where used section */

      p_QDFWFLDI = (QDFWFLDI_t *)((char *) p_QDFWRCDI + p_QDFWRCDI->WDFWRLEN);
      p_QDFFFITB = (QDFFFITB_t *)((char *) p_QDFFRINF + p_QDFFRINF->WDFFOFIT
                   +  ( p_QDFWFLDI->WDFWRRDX -1) * sizeof(QDFFFITB_t));


    for (FldIdx=0; FldIdx < p_QDFFRINF->WDFFFLD; ++FldIdx) {

       /* Field Header  */
     p_QDFFFINF = (QDFFFINF_t *)((char *) p_QDFFRINF + p_QDFFFITB->WDFFFOFS);

    if (p_QDFFFINF->WDFFFIOA EQ 0x01)  {
      /* constant  */
     p_QDFFFCON = (QDFFFCON_t *)((char *) p_QDFFFINF + sizeof(QDFFFINF_t));
     p_QDFFFDPD = (QDFFFDPD_t *)((char *) p_QDFFFINF + p_QDFFFCON->WDFFFAOC);
    }
    else {
      /*  variable */
     p_QDFFFNAM = (QDFFFNAM_t *)((char *) p_QDFFFINF + sizeof(QDFFFINF_t));
     p_QDFFFDPD = (QDFFFDPD_t *)((char *) p_QDFFFINF + p_QDFFFNAM->WDFFFAOF);
     p_QDFFFDIC = (QDFFFDIC_t *)((char *) p_QDFFFDPD + sizeof(QDFFFDPD_t));
    }
      /* Field Extension  */
     p_QDFFXFDP = (QDFFXFDP_t *)((char *) p_QDFFFINF + p_QDFFFDPD->WDFFXFDO);

      /* Row Column  */
     p_QDFFRCTB = (QDFFRCTB_t *)((char *) p_QDFFRINF + p_QDFFRDPD->WDFFDRCO
                     + (p_QDFWFLDI->WDFWRRDX - 1) *2);
     p_QDFFRCTE = (QDFFRCTE_t *)((char *) p_QDFFRCTB + sizeof(QDFFRCTB_t));

       *Odata->ROW  =  p_QDFFRCTE->WDFFSROW;
       *Odata->COL  =  p_QDFFRCTE->WDFFSCOL;

      /*   here can extract data time flags */

      /* CONSTANTS  */
    if (p_QDFFFINF->WDFFFIOA EQ 0x01)  {
      /* constant  */
      ProcessCons();

    }
    else {
        /*   Field Name   */

       p_QDFFNTB  = (QDFFNTB_t *)((char *) p_QDFFNTBL + sizeof(QDFFNTBL_t)
                          +  10 * (p_QDFWFLDI->WDFWNMEI -1) );


      /*Field attribute.  */
      /*X'01' indicates Constant (see structure QDFFFCON, Constant Field  */
      /*X'02' indicates Output (O), */
      /*X'03' indicates Message (M), h (B), */
      /*X'04' indicates Input (I),  (P)  */
      /*X'05' indicates Both (B), */
      /*X'06' indicates Hidden (H), and */
      /*X'07' indicates Program to System (P) */
       *Odata->FldIO     = p_QDFFFINF->WDFFFIOA;

      /* Keyboard shift and data type.  */
      /* X'00' indicates Alpha shift/character (A), */


        *Odata->FldAtr   = p_QDFFFNAM->WDFFKBDT;
        memcpy(Odata->FldNam,
               p_QDFFNTB->WDFFNAM,sizeof(p_QDFFNTB->WDFFNAM));
        memset(Odata->FldCom, ' ',3000);
        Odata->FldPlen  = p_QDFFFNAM->WDFFPLEN;
        Odata->FldDec   = p_QDFFFNAM->WDFFDEC;
    }

   /***********  HERE include code for Field KEYWORDS **********/
      if (FldIdx < p_QDFFRINF->WDFFFLD -1) {
       p_QDFWFLDI = (QDFWFLDI_t *)((char *) p_QDFWFLDI + p_QDFWFLDI->WDFWFLDL);
       p_QDFFFITB = (QDFFFITB_t *)((char *) p_QDFFRINF + p_QDFFRINF->WDFFOFIT
                   +  ( p_QDFWFLDI->WDFWRRDX -1) * sizeof(QDFFFITB_t));
       }

      NumFlds += 1;

       Odata->NumFld   = NumFlds;
       Odata->EndDta   = 0;

   /* End ofthe Fields  */
      if ((EndFlds EQ 1) && (FldIdx EQ p_QDFFRINF->WDFFFLD -1) ) {
        Odata->EndDta   = 1;
         *GotIt = 2;
         free(ReturnVar);
       };

       /* Return the requested Field  */
       memmove(Functn,p_iFunc, strlen(p_iFunc));

        if ( (!memcmp(Functn , "#FIRST", 6)) || (*GotIt EQ 2))  {
            *GotIt = 1;
             return(0);
          };


    /* We know we are about to get the NEXT record when we have */
    /* found the record just before                             */
      if (!memcmp(Functn , "#NEXT" , 5) &&
       !memcmp(p_iRecord, Odata->RecordName, 10) &&
       !memcmp(p_iField, Odata->FldNam, 10 ) &&
        (*p_iFld  EQ  NumFlds))
       *GotIt = 2;



    }

 }

  /* ######################################### */

int ProcessCons() {
      /*------------------------------------------------*/
      /* This loops through all keyword categories      */
      /*  for a constant field (text on the screen.)    */
      /*------------------------------------------------*/

   int cc;

     if   (p_QDFFFDPD->WDFFFDOC > 0) {

   /* p_QDFFRINF = (QDFFRINF_t *)((char *) p_QDFFINFO + p_QDFFFINF );*/
   /* p_QDFFRINF  = p_QDFFINFO + QDFARFTE.WDFARFOF */

         p_QDFFCOSA = (QDFFCOSA_t *) ((char *) p_QDFFFINF +
                                                p_QDFFFDPD->WDFFFDOC);
       cc = 0;
       for (cc=0; cc<=p_QDFFCOSA->WDFFCCT -1 ; ++cc) {

          p_QDFFCCOA  = (QDFFCCOA_t *)((char *) p_QDFFCOSA +
                             sizeof(QDFFCOSA_t) + sizeof(QDFFCCOA_t) * cc);


           if (p_QDFFCCOA->WDFFCAID EQ 0x22) {
              p_QDFKMFDK = (QDFKMFDK_t *)((char *) p_QDFFFINF  +
                                                p_QDFFCCOA->WDFFCAOF);
              ProcessCat22();
            }


           if (p_QDFFCCOA->WDFFCAID EQ 0x23) {
              p_QDFKDFT  = (QDFKDFT_t *)((char *) p_QDFFFINF  +
                                                p_QDFFCCOA->WDFFCAOF);
              ProcessCat23();
            }


           if (p_QDFFCCOA->WDFFCAID EQ 0x24) {
              p_QDFKEDTR = (QDFKEDTR_t *)((char *) p_QDFFFINF  +
                                                p_QDFFCCOA->WDFFCAOF);
              ProcessCat24();
            }

       }




     }


 }

  /* ######################################### */

int ProcessCat22() {
      /*-----------------------------------------------*/
      /* This loops through all keywords that fall into*/
      /*  category 22                                  */
      /*-----------------------------------------------*/
}

  /* ######################################### */

int ProcessCat23() {
      /*------------------------------------------------*/
      /* This loops through all keywords that fall into */
      /*  category 23 (DFT, MSGCON, DFTVAL, HTML)       */
      /*------------------------------------------------*/
 typedef _Packed struct  KwdData {
    char Temp[3000];
} KwdData_t;

   KwdData_t  *p_KwdData;
   int        ck;

  for (ck=1; ck <= p_QDFKDFT->WDFKDFS ; ++ck) {

    if   (ck EQ 1 )  {
     p_QDFKDFPM = (QDFKDFPM_t *)((char *) p_QDFKDFT + sizeof(QDFKDFT_t));  }
    else
    {p_QDFKDFPM = (QDFKDFPM_t *)((char *) p_QDFKDFPM  + sizeof(QDFKDFPM_t)); }

        if (p_QDFKDFPM->WDFKDFID EQ 0x01)  {

        memcpy(Odata->FldNam,"          ",10);

        Odata->FldPlen  = p_QDFKDFPM->WDFKDFLN;
        *Odata->FldIO   = p_QDFFFINF->WDFFFIOA;
  p_KwdData =  (KwdData_t *) ((char *) p_QDFKDFPM + sizeof(QDFKDFPM_t) );
        memset(Odata->FldCom, ' ',3000);
        memcpy(Odata->FldCom,
                p_KwdData->Temp, p_QDFKDFPM->WDFKDFLN);

        }

    }


}

  /* ######################################### */

int ProcessCat24() {
      /*-----------------------------------------------*/
      /* This loops through all keywords that fall into*/
      /*  category 24  (Date, Time)                    */
      /*-----------------------------------------------*/
        memcpy(Odata->FldNam,"          ",10);
        memset(Odata->FldCom, ' ',3000);
}



RTVFLDCL2
PGM   (&LIB   &FILE)
 
/* CRTBNDCL   PGM(urlib/RTVFLDCL2)   SRCFILE(urlib/C)  */
/*            SRCMBR(RTVFLDCL2)  REPLACE(*YES)         */
 
 
DCL  &LIB  *CHAR 10
DCL  &FILE *CHAR 10
 
CALL  RTVFLD2 (&LIB  &FILE)
 
RCLACTGRP ACTGRP(DISPINFO2)
 
 
ENDPGM

RTVFLD2

     /* CRTRPGMOD MODULE(urlib/RTVFLD2) SRCFILE(urlib/C)                     */
     /*        SRCMBR(RTVFLD2) REPLACE(*YES)                                 */



     /* CRTPGM PGM(urlib/RTVFLD2)                                         */
     /*       MODULE(urlib/RTVFLD2 urlib/DISPINFOC2)                   */
     /*       ACTGRP(DISPINFO2)                                              */


     h Option(*NODEBUGIO)

     D RTVFLD2         PR
     D                               10A
     D                               10A

     D RTVFLD2         PI
     D iLib                          10A
     D iFile                         10A

     D DISPINFOC       PR                  EXTPROC('DISPINFOC2')
     D Lib                           10A   const
     D File                          10A   const
     D oRecord                       10A   const
     D oField                        10A   const
     D oFld                          10I 0 const
     D Func                          10A   const
     D Fdata                               like(RTVDATA)
           // returned data

     D RTVDATA         DS
     D RecordName                    10A
     D ROW                            1A
     D COL                            1A
     D FldIO                          1A
     D FldAtr                         1A
     D FldNam                        10A
     D FldCom                      3000A
     D FLdPlen                       10I 0
     D FldDec                        10I 0
     D EndDta                        10I 0
     D NumFld                        10I 0

     D oRecordName     S             10A
     D oFldNam         S             10A
     D oFld            S             10I 0


      /free

          *INLR = *ON;

        CALLP  DISPINFOC( iLib  : iFile    : '  ': '  ' : 0 :
                   '#FIRST    ' : RTVDATA   );

        DOW (EndDta = 0);

                    oRecordName  =    RecordName ;
                    oFldNam      =    FldNam     ;
                    oFld         =    NumFld     ;

       // To get the next record the previous fields info is also passed
         CALLP  DISPINFOC(iLib   :  iFile    :
                        oRecordName  :
                        oFldNam      :
                        oFld         :
                       '#NEXT     ' : RTVDATA   );

        ENDDO;

      /end-free

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