Argox PA-20 Programming Guide - Manual (Page 61)

PT-20 Programming Guide 59
recordno, char* R_Buffer, int flag);
Example call： char str[8]=”abcdefg”,str_buffer[60];
SearchField_GR(&fsearch, str,0,0, str_buffer,FORWARD);
Includes： #include “DBMS.h”
Description： This function can search and contrast the data of appointed field. After
success, reading the record which includes this field.
Several describe the argument as follows:
argument description
_DBMS* F_Search The file’s searching structure that has been
initialized.
char* field String data wanted to match.
int search_fieldno Field wanted to search.
int recordno Begin to search from which data.
char* R_Buffer After contrast success, it will write record
which included this field into buffer.
int flag FORWARD => Search from forward to
backward
BACKWARD => Search from backward to
forward
As success of searching, the file index will
stay in successful record front. When
search defeat, the file index will not be
moved.
Returns： When “R _ Buffer = NULL”, pass back – 1: Search defeat; Pass other
value back: That is the size of space for buffer.
When “R _ Buffer ≠ NULL”, pass back – 1: Search defeat; Pass other
value back: That is the record position which confirm to contrast data.
SearchField_GF
Purpose： Search the designated field. After success, acquiring the appointed field
in including the field’s record.
Syntax： int SearchField_GF(_DBMS* F_Search, char* field, int search_fieldno, int
recordno, int get_field_no, char* F_Buffer, int flag);
Example call： char str[8]=”abcdefg”,str_buffer[60];
SearchField_GF(&fsearch, str,0,0,1,str_buffer,FORWARD);
Includes： #incl ude “DBMS.h”