1.\" $NetBSD: form_data.3,v 1.10 2017/10/23 15:23:55 abhinav Exp $ 2.\" 3.\" Copyright (c) 2001 4.\" Brett Lymn - blymn@baea.com.au, brett_lymn@yahoo.com.au 5.\" 6.\" This code is donated to The NetBSD Foundation by the author. 7.\" 8.\" Redistribution and use in source and binary forms, with or without 9.\" modification, are permitted provided that the following conditions 10.\" are met: 11.\" 1. Redistributions of source code must retain the above copyright 12.\" notice, this list of conditions and the following disclaimer. 13.\" 2. Redistributions in binary form must reproduce the above copyright 14.\" notice, this list of conditions and the following disclaimer in the 15.\" documentation and/or other materials provided with the distribution. 16.\" 3. The name of the Author may not be used to endorse or promote 17.\" products derived from this software without specific prior written 18.\" permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.Dd January 1, 2001 33.Dt FORM_DATA 3 34.Os 35.Sh NAME 36.Nm data_ahead , 37.Nm data_behind 38.Nd form library 39.Sh LIBRARY 40.Lb libform 41.Sh SYNOPSIS 42.In form.h 43.Ft int 44.Fn data_ahead "FORM *form" 45.Ft int 46.Fn data_behind "FORM *form" 47.Sh DESCRIPTION 48If there is data offscreen to the right of the current field of the 49given form then 50.Fn data_ahead 51will return 52.Dv TRUE , 53otherwise 54.Dv FALSE 55is returned. 56Similarly, if there is 57data offscreen to the left of the current field of the given form then 58.Fn data_behind 59will return 60.Dv TRUE . 61.Sh RETURN VALUES 62If the condition is met then the functions will return 63.Dv TRUE , 64if there 65is an error or there is no data offscreen the functions will return 66.Dv FALSE . 67.Sh SEE ALSO 68.Xr curses 3 , 69.Xr forms 3 70.Sh NOTES 71The header 72.In form.h 73automatically includes both 74.In curses.h 75and 76.In eti.h . 77