'\" t
.\"***************************************************************************
-.\" Copyright (c) 1998 Free Software Foundation, Inc. *
+.\" Copyright 2018-2019,2020 Thomas E. Dickey *
+.\" Copyright 1998-2010,2012 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_field.3x,v 1.5 1998/11/29 01:05:52 Rick.Ohnemus Exp $
+.\" $Id: form_field.3x,v 1.17 2020/10/24 09:10:45 tom Exp $
.TH form_field 3X ""
.SH NAME
-\fBform_field\fR - make and break connections between fields and forms
+\fBform_field\fR \- make and break connections between fields and forms
.SH SYNOPSIS
\fB#include <form.h>\fR
+.sp
+\fBint set_form_fields(FORM *\fP\fIform\fP\fB, FIELD **\fP\fIfields\fP\fB);\fP
.br
-int set_form_fields(FORM *form, FIELD **fields);
+\fBFIELD **form_fields(const FORM *\fP\fIform\fP\fB);\fP
.br
-FIELD **form_fields(const FORM *form);
+\fBint field_count(const FORM *\fP\fIform\fP\fB);\fP
.br
-int field_count(const FORM *form);
-.br
-int move_field(FIELD *field, int frow, int fcol);
+\fBint move_field(FIELD *\fP\fIfield\fP\fB, int \fP\fIfrow\fP\fB, int \fP\fIfcol\fP\fB);\fP
.br
.SH DESCRIPTION
The function \fBset_form_fields\fR changes the field pointer array of
the given \fIform\fR. The array must be terminated by a \fBNULL\fR.
-
+.PP
The function \fBform_fields\fR returns the field array of the given form.
-
+.PP
The function \fBfield_count\fR returns the count of fields in \fIform\fR.
-
-The function \fBmove_field\fR move the given field (which must be disconnected)
+.PP
+The function \fBmove_field\fR moves the given field (which must be disconnected)
to a specified location on the screen.
-.SH RETURN VALUES
-The function \fBform_fields\fR returns \fBNULL\fR on error.
-
-The function \fBfield_count\fR returns \fBERR\fR (the general
-\fBcurses\fR error return value) on error.
-
+.SH RETURN VALUE
+The function \fBform_fields\fR returns a pointer (which may be \fBNULL\fR).
+It does not set \fBerrno\fP.
+.PP
+The function \fBfield_count\fR returns \fBERR\fR if the \fIform\fP parameter
+is \fBNULL\fP.
+.PP
The functions \fBset_form_fields\fR and \fBmove_field\fR return one of
the following codes on error:
.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_POSTED\fR
+.B E_CONNECTED
+The field is already connected to a form.
+.TP 5
+.B E_POSTED
The form is already posted.
.TP 5
-\fBE_CONNECTED\fR
-The field is already connected to a form.
+.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 SVr4 forms library documentation specifies the \fBfield_count\fR error value
-as -1 (which is the value of \fBERR\fR).
+as \-1 (which is the value of \fBERR\fR).
.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.
projects / ncurses.git / blobdiff