Table of Contents
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Function
OFh
-
Get
Field
From
Specified
Record
Parameter
Block:
00
FILEJHANDLE
File Identifier
01
RECORD.
ID
Record
Identifier
02
FIELD-ID
Field
Identifier
03
TRANSFER_LENGTH
Number
of
bytes
to
read
04
BUFFER
Pointer
to
buffer
to
receive
date
Returr
i
Value:
AX:
STATUS
Number
of
bytes
transferred or
The
FILEHANDLE
parameter
specifies
the
file
handle
of
a
previously
opened
database
file.
The
RECORDID
parameter
specifies
the record from
which
the
data
is
to
be
read.
The
FIELDID parameter
specifies
the
field
ID
of
the
field
to
access.
The
TRANSFERLENGTH
parameter
specifies
the
number
of
bytes
to
be
read from the
field.
The
BUFFER
parameter
specifies the offset
from
the
segment
in
DS
of
the
buffer to
receive the transferred data.
On
return,
AX
will
contain the
actual
number
of
bytes placed
in
the
buffer.
The
bytes
transferred
will
always be
taken
starting at
the
beginning
of
the
field
data.
It
is
not
possible
to
read a
field in
a
series
of
partial
reads.
Error
Returns:
93
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