PT-20 Programming Guide
55
unsigned char *pusFielddlt
This argument has two kinds of meanings.
When record _ Type is 0, search for regular
length. This function needs to insert the
unsigned char array; the array represents
the length of every field.
When record _ Type is1, search for
variable length, this function need to insert
one character to represent separate
symbol.
int record_type
When record _ Type is 0, search for regular
length. It has no separate symbols among
field and field.
When record _ Type is 1, search for
variable length. It needs a separate symbol
among field and field.
int record_length
This argument is each record‟s length.
When record _ Type is 0, need to insert this
value, not including the symbol of line feed.
When record _ Type is 1, this field can
insert any value.
int total_field_no
This argument is the field‟s quantity of each
record.
int total_record_no
Total amount of records in the file. If does
not know the total amount, you can insert -
1, that will calculate automatically by the
system.
Returns
：
0: Initialize defeat.
1: Initialize success.
Ini_SearchAdv
Purpose
：
Use “Ini_SearchAdv” can initiate the advance file search function in disk
Syntax
：
int Ini_SearchAdv(_TFILE* filehd,_DBMS* F_Search, unsigned char
*pusFielddlt, unsigned char*pusKeyIdx, int slKeyField_Num, 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]=”,”;
