Argox PA-20 Programming Guide Bedienungsanleitung PDF herunterladen (Seite 56)

PT-20 Programming Guide

DBMS

Ini_Search

Purpose：

Use “Ini_Search” can initiate the file search function in disk.

Syntax：

int Ini_Search(_TFILE* filehd,_DBMS* F_Search, unsigned char

*pusFielddlt, int record_type, int record_length, int total_field_no, int

total_record_no);

Example call：

Example 1: Variable field length

_DBMS fsearch;

_TFILE *filepoint;

unsigned char ausFielddlt[2]=”,”;

filepoint = _fopen(“c:\\data\\data.txt”,”r+”);

Ini_Search(filepoint,&fsearch, ausFielddlt,1,0,5,0);

Example 2: Regular field length

_DBMS fsearch;

_TFILE *filepoint;

unsigned char field_size[5]={6,5,4,5,6};

filepoint = _fopen(“c:\\data\\data.txt”,”a+”);

Ini_Search(filepoint,&fsearch, field_size,0,26,5,0);

Includes：

#include “DBMS.h ”

Description：

This function can initialize a work of searching file. After inserting every

argument, you can use _ DBMS* F _ Search to search files. Several

introduces the argument as follows:

argument

description

_TFILE* filehd

An opened file handle.

_DBMS* F_Search

One of _DBMS start address has already

declared. Originally after the beginning

success this argument was used for written

into various kinds of search.

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Argox PA-20 Programming Guide Bedienungsanleitung Seite 56