.\"	$NetBSD: form_field_validation.3,v 1.2 2002/01/15 02:50:18 wiz Exp $
.\"
.\" Copyright (c) 2001
.\"	Brett Lymn - blymn@baea.com.au, brett_lymn@yahoo.com.au
.\"
.\" This code is donated to The NetBSD Foundation by the author.
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.Dd January, 2001
.Dt FORMS 3
.Os
.Sh NAME
.Nm field_arg ,
.Nm field_type ,
.Nm set_field_type
.Nd form library
.Sh LIBRARY
.Lb libform
.Sh SYNOPSIS
.Fd #include <form.h>
.Ft char *
.Fn field_arg "FIELD *field"
.Ft FIELDTYPE *
.Fn field_type "FIELD *field"
.Ft int
.Fn set_field_type "FIELD *field, FIELDTYPE *type, ..."
.Sh DESCRIPTION
The
.Fn field_arg
function returns the field type arguments that are associated with the
given field. The
.Fn field_type
function returns the field type structure associated with the given
field, this type can be set by calling the
.Fn set_field_type
function which associates the given field type with the field, the
third and subsequent parameters are field dependent arguments.
.Sh RETURN VALUES
Functions returning pointers will return NULL if an error is detected.
The functions that return an int will return one of the following error
values:
.Pp
.Bl -tag -width E_UNKNOWN_COMMAND -compact
.It Er E_OK
The function was successful.
.El
.Sh SEE ALSO
.Xr curses 3 ,
.Xr forms 3
.Sh NOTES
The header
.Pa <form.h>
automatically includes both
.Pa <curses.h>
and
.Pa <eti.h> .