115 lines
3.6 KiB
Groff
115 lines
3.6 KiB
Groff
.\" $NetBSD: form_page.3,v 1.4 2002/02/20 11:30:35 wiz Exp $
|
|
.\"
|
|
.\" Copyright (c) 1999
|
|
.\" Brett Lymn - blymn@baea.com.au, brett_lymn@yahoo.com.au
|
|
.\"
|
|
.\" This code is donated to The NetBSD Foundation by the author.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. The name of the Author may not be used to endorse or promote
|
|
.\" products derived from this software without specific prior written
|
|
.\" permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.Dd January 1, 2001
|
|
.Dt FORM_PAGE 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm current_field ,
|
|
.Nm field_index ,
|
|
.Nm form_page ,
|
|
.Nm form_max_page ,
|
|
.Nm set_current_field ,
|
|
.Nm set_form_page
|
|
.Nd form library
|
|
.Sh LIBRARY
|
|
.Lb libform
|
|
.Sh SYNOPSIS
|
|
.Fd #include \*[Lt]form.h\*[Gt]
|
|
.Ft FIELD *
|
|
.Fn current_field "FORM *form"
|
|
.Ft int
|
|
.Fn field_index "FIELD *field"
|
|
.Ft int
|
|
.Fn form_page "FORM *form"
|
|
.Ft int
|
|
.Fn form_max_page "FORM *form"
|
|
.Ft int
|
|
.Fn set_current_field "FORM *form, FIELD *field"
|
|
.Ft int
|
|
.Fn set_form_page "FORM *form, int page"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Fn current_field
|
|
returns a pointer to the structure for the field that is currently
|
|
active on the page. If there is an error,
|
|
.Fn current_field
|
|
will return NULL. Calling
|
|
.Fn field_index
|
|
will return the index of the given field in the form field array. The
|
|
current page the form is on can be determined by using
|
|
.Fn form_page ,
|
|
the current page of a form can be programmatically set by calling
|
|
.Fn set_form_page .
|
|
The maximum page number for a form can be found by
|
|
calling the function
|
|
.Fn form_max_page
|
|
but note that this function is a
|
|
.Nx
|
|
extension and must not be used
|
|
in portable forms library programs. The current field on the form may
|
|
be set by calling
|
|
.Fn set_current_field
|
|
which will set the current field to the one given.
|
|
.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.
|
|
.It Er E_BAD_ARGUMENT
|
|
The function was passed a bad argument.
|
|
.It Er E_NOT_CONNECTED
|
|
The given field is not associated with a form.
|
|
.It Er E_BAD_STATE
|
|
The function was called from within an init or term function.
|
|
.It Er E_INVALID_FIELD
|
|
The field given is not part of the given form.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr curses 3 ,
|
|
.Xr forms 3
|
|
.Sh NOTES
|
|
The header
|
|
.Pa \*[Lt]form.h\*[Gt]
|
|
automatically includes both
|
|
.Pa \*[Lt]curses.h\*[Gt]
|
|
and
|
|
.Pa \*[Lt]eti.h\*[Gt] .
|
|
.Pp
|
|
The
|
|
.Nm form_max_page
|
|
is a
|
|
.Nx
|
|
extension and should not be used in portable applications.
|