Argox PA-20 Programming Guide Instrukcja Użytkownika Pobierz pdf (Strona 61)

PT-20 Programming Guide

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：

#include “DBMS.h”

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