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'\" t
.\" $OpenBSD: form_data.3,v 1.13 2023/10/17 09:52:10 nicm Exp $
.\"
.\"***************************************************************************
.\" Copyright 2018-2022,2023 Thomas E. Dickey *
.\" Copyright 1998-2010,2015 Free Software Foundation, Inc. *
.\" *
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.\" copies of the Software, and to permit persons to whom the Software is *
.\" furnished to do so, subject to the following conditions: *
.\" *
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.\" in all copies or substantial portions of the Software. *
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.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
.\" OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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.\" OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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.\"***************************************************************************
.\"
.\" $Id: form_data.3,v 1.13 2023/10/17 09:52:10 nicm Exp $
.TH form_data 3 2023-07-01 "ncurses 6.4" "Library calls"
.SH NAME
\fBdata_ahead\fP,
\fBdata_behind\fP \- test for off-screen data in given forms
.SH SYNOPSIS
\fB#include <form.h>\fP
.sp
\fBbool data_ahead(const FORM *\fIform\fB);\fR
.br
\fBbool data_behind(const FORM *\fIform\fB);\fR
.SH DESCRIPTION
The function \fBdata_ahead\fP tests whether there is off-screen data
ahead in the given form.
It returns TRUE (1) or FALSE (0).
.PP
The function \fBdata_behind\fP tests whether there is off-screen data
behind in the given form.
It returns TRUE (1) or FALSE (0).
.SH SEE ALSO
\fBcurses\fP(3), \fBform\fP(3).
.SH NOTES
The header file \fB<form.h>\fP automatically includes the header file
\fB<curses.h>\fP.
.SH PORTABILITY
These routines emulate the System V forms library.
They were not supported on
Version 7 or BSD versions.
.SH AUTHORS
Juergen Pfeifer.
Manual pages and adaptation for new curses by Eric S. Raymond.
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