101 lines
4.1 KiB
Plaintext
101 lines
4.1 KiB
Plaintext
'\" t
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.\"***************************************************************************
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.\" Copyright (c) 1998-2018,2019 Free Software Foundation, Inc. *
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.\" *
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.\" Permission is hereby granted, free of charge, to any person obtaining a *
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.\" copy of this software and associated documentation files (the *
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.\" "Software"), to deal in the Software without restriction, including *
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.\" without limitation the rights to use, copy, modify, merge, publish, *
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.\" distribute, distribute with modifications, sublicense, and/or sell *
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.\" copies of the Software, and to permit persons to whom the Software is *
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.\" furnished to do so, subject to the following conditions: *
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.\" *
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.\" The above copyright notice and this permission notice shall be included *
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.\" in all copies or substantial portions of the Software. *
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.\" *
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.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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.\" OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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.\" IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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.\" DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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.\" OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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.\" THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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.\" *
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.\" Except as contained in this notice, the name(s) of the above copyright *
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.\" holders shall not be used in advertising or otherwise to promote the *
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.\" sale, use or other dealings in this Software without prior written *
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.\" authorization. *
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.\"***************************************************************************
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.\"
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.\" $Id: form_page.3x,v 1.16 2019/01/20 20:31:42 tom Exp $
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.TH form_page 3X ""
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.SH NAME
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\fBform_page\fR \- set and get form page number
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.SH SYNOPSIS
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\fB#include <form.h>\fR
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.br
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int set_current_field(FORM *form, FIELD *field);
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.br
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FIELD *current_field(const FORM *);
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.br
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int unfocus_current_field(FORM *form);
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.br
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int set_form_page(FORM *form, int n);
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.br
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int form_page(const FORM *form);
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.br
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int field_index(const FIELD *field);
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.br
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.SH DESCRIPTION
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The function \fBset_current_field\fR sets the current field of the given
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form; \fBcurrent_field\fR returns the current field of the given form.
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.PP
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The function \fBunfocus_current_field\fR removes the focus from the current
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field of the form.
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In such state, inquiries via \fBcurrent_field\fR shall return a NULL pointer.
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.PP
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The function \fBset_form_page\fR sets the form's page number (goes to page
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\fIn\fR of the form).
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.PP
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The function \fBform_page\fR returns the form's current page number.
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.PP
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The function \fBfield_index\fR returns the index of the field in the
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field array of the form it is connected to.
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It returns \fBERR\fR if
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the argument is the null pointer or the field is not connected.
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.SH RETURN VALUE
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Except for \fBform_page\fR, each routine returns one of the following:
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.TP 5
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.B E_OK
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The routine succeeded.
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.TP 5
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.B E_BAD_ARGUMENT
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Routine detected an incorrect or out-of-range argument.
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.TP 5
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.B E_BAD_STATE
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Routine was called from an initialization or termination function.
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.TP 5
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.B E_INVALID_FIELD
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Contents of a field are not valid.
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.TP 5
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.B E_REQUEST_DENIED
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The form driver could not process the request.
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.TP 5
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.B E_SYSTEM_ERROR
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System error occurred (see \fBerrno\fR(3)).
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.
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.SH SEE ALSO
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\fBcurses\fR(3X), \fBform\fR(3X).
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.SH NOTES
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The header file \fB<form.h>\fR automatically includes the header file
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\fB<curses.h>\fR.
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.SH PORTABILITY
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These routines emulate the System V forms library.
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They were not supported on
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Version 7 or BSD versions.
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.PP
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The \fBunfocus_current_field\fP function is an ncurses extension.
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.SH AUTHORS
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Juergen Pfeifer.
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Manual pages and adaptation for new curses by Eric S. Raymond.
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