Metrologic Optimus S Programming Manual page 209

Return If successful, it returns 1.
On error, it returns 0.
An error code is set to the global variable fErrorCode to indicate the error
condition encountered. Below are possible error codes and their interpretation.
Error Code
2
4
7
8
10
13
14
16
See Also add_member, has_member
get_member
Purpose To read a data record (member) from a DBF file.
Syntax int get_member (int DBF_fd, int key_number, char *buffer);
int DBF_fd;
int key_number;
char *buffer;
Example if (get_member (DBF_fd, 1, buffer) == 0) puts (buffer);
Description This routine reads a data record pointed to by the index pointer of an IDX file
(key_number), which is associated with a DBF file (DBF_fd), into a character
array (buffer).
Return If successful, it returns 1.
On error, it returns 0.
An error code is set to the global variable fErrorCode to indicate the error
condition encountered. Below are possible error codes and their interpretation.
Error Code
2
4
7
Chapter 3 Terminal Specific Function Library
Interpretation
File specified by DBF_fd does not exist.
File specified by DBF_fd is not a DBF file.
Invalid file handle.
File not opened.
Not enough free block.
Invalid value in argument: key_number
IDX file specified by key_number does not exist.
No members exist in the DBF file.
/* key no. of the IDX file whose pointer points to the target member */
/* pointer to a buffer where the member is read into */
Interpretation
File specified by DBF_fd does not exist.
File specified by DBF_fd is not a DBF file.
Invalid file handle.
/* file handle of the target DBF file */
203