112 lines
3.3 KiB
Groff
112 lines
3.3 KiB
Groff
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.\" $NetBSD: form_field.3,v 1.12 2012/10/08 18:15:09 njoly Exp $
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.\"
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.\" Copyright (c) 2001
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.\" Brett Lymn - blymn@baea.com.au, brett_lymn@yahoo.com.au
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.\"
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.\" This code is donated to The NetBSD Foundation by the author.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. The name of the Author may not be used to endorse or promote
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.\" products derived from this software without specific prior written
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.\" permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.Dd January 1, 2001
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.Dt FORMS 3
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.Os
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.Sh NAME
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.Nm field_count ,
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.Nm form_fields ,
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.Nm move_field ,
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.Nm set_form_fields
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.Nd form library
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.Sh LIBRARY
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.Lb libform
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.Sh SYNOPSIS
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.In form.h
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.Ft int
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.Fn field_count "FORM *form"
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.Ft FIELD **
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.Fn form_fields "FORM *form"
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.Ft int
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.Fn move_field "FIELD *field" "int frow" "int fcol"
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.Ft int
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.Fn set_form_fields "FORM *form" "FIELD **fields"
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.Sh DESCRIPTION
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The
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.Fn field_count
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function returns the number of fields that are attached to the given
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form, if the form argument passed is
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.Dv NULL
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then
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.Fn field_count
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will return \-1.
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The function
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.Fn form_fields
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will return a pointer to array of attach fields for the given form,
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this array is not
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.Dv NULL
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terminated, fields may be attached to the given
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form by calling
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.Fn set_form_fields .
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The
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.Fa fields
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argument in this function is a pointer to a
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.Dv NULL
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terminated array of
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fields that will be attached to the form.
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If there are already fields attached to the form then they will be
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detached before the new fields are attached.
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The new fields given must not be attached to any other form.
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The
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.Fn move_field
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function will move the given field to the location specified by
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.Fa frow
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and
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.Fa fcol .
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.Sh RETURN VALUES
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Functions returning pointers will return
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.Dv NULL
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if an error is detected.
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The functions that return an int will return one of the following error
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values:
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.Pp
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.Bl -tag -width E_UNKNOWN_COMMAND -compact
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.It Er E_OK
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The function was successful.
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.It Er E_CONNECTED
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The field is connected to a form.
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.It Er E_POSTED
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The form is currently posted to the screen.
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.It Er E_BAD_ARGUMENT
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The function was passed a bad argument.
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.El
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.Sh SEE ALSO
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.Xr curses 3 ,
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.Xr forms 3
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.Sh NOTES
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The header
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.In form.h
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automatically includes both
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.In curses.h
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and
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.In eti.h .
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