Source Code Samples

Figure 1. T1520DD0 — DDS Source for a Phone Book Display
     A                                      INDARA
     A          R PHONE
     A                                      CF03(03 'EXIT')
     A                                  1 35'PHONE BOOK'
     A                                      DSPATR(HI)
     A                                  7 28'Name:'
     A            NAME          11A  I  7 34
     A                                  9 25'Address:'
     A            ADDRESS       20A  I  9 34
     A                                 11 25'Phone #:'
     A            PHONE_NUM      8A  I 11 34
     A                                 23 34'F3 - EXIT'
                                            DSPATR(HI)
Figure 2. T1520ID2 — ILE C Source to Specify Indicators in a Separate Indicator Area
/*  This program uses response indicators to inform the program that  */
/*  F3 was pressed by a user to indicate that an input request        */
/*  finished. The response indicators are returned in a separate      */
/*  indicator area.                                                   */ 
#include <stdio.h>
#include <recio.h>
#include <stdlib.h>
typedef struct{
               char name[11];
               char address[20];
               char phone_num[8];
              }info;
#define IND_ON '1'
#define F3      2

int main(void)
{
   _RFILE     *fp;
   _RIOFB_T   *rfb;
   info       phone_list;
   _SYSindara indicator_area; 
    if (( fp = _Ropen ( "*LIBL/T1520DD0", "ar+ indicators=y" )) == NULL )
    {
        printf ( "display file open failed\n" );
        exit ( 1 );
    } 
    _Rindara ( fp, indicator_area ); 
    _Rformat ( fp, "PHONE" );
    rfb = _Rwrite ( fp, "", 0 );
    rfb = _Rreadn ( fp, &phone_list, sizeof(phone_list), __DFT );
    if ( indicator_area[F3] == IND_ON )
    {
        printf ( "user pressed F3\n" );
    }
    _Rclose ( fp );
}
Note:

This program uses response indicators IND_ON '1' and F3 2 to inform the ILE C program T1520ID2 that a user pressed F3. The _Rindara() function accesses the separate indicator buffer indicator_area associated with the externally described file T1520DD0. The display file T1520DD0 is opened with the keyword indicators=yes to return the indicator to a separate area.