'\" t
.\"***************************************************************************
-.\" Copyright (c) 1998 Free Software Foundation, Inc. *
+.\" Copyright 2018-2019,2020 Thomas E. Dickey *
+.\" Copyright 1998-2010,2016 Free Software Foundation, Inc. *
.\" *
.\" Permission is hereby granted, free of charge, to any person obtaining a *
.\" copy of this software and associated documentation files (the *
.\" authorization. *
.\"***************************************************************************
.\"
-.\" $Id: form_page.3x,v 1.8 1998/11/29 01:08:02 Rick.Ohnemus Exp $
+.\" $Id: form_page.3x,v 1.19 2020/10/18 00:02:44 tom Exp $
.TH form_page 3X ""
.SH NAME
-\fBform_page\fR - set and get form page number
+\fBform_page\fR \- set and get form page number
.SH SYNOPSIS
\fB#include <form.h>\fR
+.sp
+\fBint set_current_field(FORM *\fP\fIform\fP\fB, FIELD *\fP\fIfield\fP\fB);\fP
.br
-int set_current_field(FORM *form, FIELD *field);
+\fBFIELD *current_field(const FORM *\fP\fIform\fP\fB);\fP
+.sp
+\fBint unfocus_current_field(FORM *\fP\fIform\fP\fB);\fP
+.sp
+\fBint set_form_page(FORM *\fP\fIform\fP\fB, int \fP\fIn\fP\fB);\fP
.br
-FIELD *current_field(const FORM *);
-.br
-int set_form_page(FORM *form, int n);
-.br
-int form_page(const FORM *form);
-.br
-int field_index(const FIELD *field);
+\fBint form_page(const FORM *\fP\fIform\fP\fB);\fP
+.sp
+\fBint field_index(const FIELD *\fP\fIfield\fP\fB);\fP
.br
.SH DESCRIPTION
-The function \fBset_current field\fR sets the current field of the given
+The function \fBset_current_field\fR sets the current field of the given
form; \fBcurrent_field\fR returns the current field of the given form.
.PP
+The function \fBunfocus_current_field\fR removes the focus from the current
+field of the form.
+In such state, inquiries via \fBcurrent_field\fR shall return a NULL pointer.
+.PP
The function \fBset_form_page\fR sets the form's page number (goes to page
\fIn\fR of the form).
.PP
The function \fBform_page\fR returns the form's current page number.
.PP
The function \fBfield_index\fR returns the index of the field in the
-field array of the form it is connected to. It returns \fBERR\fR if
+field array of the form it is connected to.
+It returns \fBERR\fR if
the argument is the null pointer or the field is not connected.
.SH RETURN VALUE
Except for \fBform_page\fR, each routine returns one of the following:
.TP 5
-\fBE_OK\fR
+.B E_OK
The routine succeeded.
.TP 5
-\fBE_SYSTEM_ERROR\fR
-System error occurred (see \fBerrno\fR).
-.TP 5
-\fBE_BAD_ARGUMENT\fR
+.B E_BAD_ARGUMENT
Routine detected an incorrect or out-of-range argument.
.TP 5
-\fBE_BAD_STATE\fR
+.B E_BAD_STATE
Routine was called from an initialization or termination function.
.TP 5
-\fBE_INVALID_FIELD\fR
+.B E_INVALID_FIELD
Contents of a field are not valid.
.TP 5
-\fBE_REQUEST_DENIED\fR
+.B E_REQUEST_DENIED
The form driver could not process the request.
+.TP 5
+.B E_SYSTEM_ERROR
+System error occurred (see \fBerrno\fR(3)).
+.
.SH SEE ALSO
\fBcurses\fR(3X), \fBform\fR(3X).
.SH NOTES
The header file \fB<form.h>\fR automatically includes the header file
\fB<curses.h>\fR.
.SH PORTABILITY
-These routines emulate the System V forms library. They were not supported on
+These routines emulate the System V forms library.
+They were not supported on
Version 7 or BSD versions.
+.PP
+The \fBunfocus_current_field\fP function is an ncurses extension.
.SH AUTHORS
-Juergen Pfeifer. Manual pages and adaptation for new curses by Eric
-S. Raymond.
-.\"#
-.\"# The following sets edit modes for GNU EMACS
-.\"# Local Variables:
-.\"# mode:nroff
-.\"# fill-column:79
-.\"# End:
+Juergen Pfeifer.
+Manual pages and adaptation for new curses by Eric S. Raymond.