'\" t
.\" $OpenBSD: form_opts.3,v 1.11 2023/10/17 09:52:10 nicm Exp $
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.\" $Id: form_opts.3,v 1.11 2023/10/17 09:52:10 nicm Exp $
.TH form_opts 3 2023-07-01 "ncurses 6.4" "Library calls"
.SH NAME
\fBset_form_opts\fP,
\fBform_opts_on\fP,
\fBform_opts_off\fP,
\fBform_opts\fP \- set and get form options
.SH SYNOPSIS
\fB#include <form.h>\fP
.sp
\fBint set_form_opts(FORM *\fIform\fB, Field_Options \fIopts\fB);\fR
.br
\fBField_Options form_opts(const FORM *\fIform\fB);\fR
.sp
\fBint form_opts_on(FORM *\fIform\fB, Field_Options \fIopts\fB);\fR
.br
\fBint form_opts_off(FORM *\fIform\fB, Field_Options \fIopts\fB);\fR
.SH DESCRIPTION
The function \fBset_form_opts\fP sets all the given form's option bits (form
option bits may be logically-OR'ed together).
.PP
The function \fBform_opts_on\fP turns on the given option bits, and leaves
others alone.
.PP
The function \fBform_opts_off\fP turns off the given option bits, and leaves
others alone.
.PP
The function \fBform_opts\fP returns the form's current option bits.
.PP
The following options are defined (all are on by default):
.TP 5
O_NL_OVERLOAD
Overload the \fBREQ_NEW_LINE\fP forms driver request so that calling it at the
end of a field goes to the next field.
.TP 5
O_BS_OVERLOAD
Overload the \fBREQ_DEL_PREV\fP forms driver request so that calling it at the
beginning of a field goes to the previous field.
.SH RETURN VALUE
Except for \fBform_opts\fP, each routine returns one of the following:
.TP 5
.B E_OK
The routine succeeded.
.TP 5
.B E_SYSTEM_ERROR
System error occurred (see \fBerrno\fP(3)).
.SH SEE ALSO
\fBcurses\fP(3), \fBform\fP(3).
.SH NOTES
The header file \fB<form.h>\fP automatically includes the header file
\fB<curses.h>\fP.
.SH PORTABILITY
These routines emulate the System V forms library.
They were not supported on
Version 7 or BSD versions.
.SH AUTHORS
Juergen Pfeifer.
Manual pages and adaptation for new curses by Eric S. Raymond.