64 lines
3.4 KiB
Groff
64 lines
3.4 KiB
Groff
.\" $OpenBSD: curs_beep.3,v 1.8 2023/10/17 09:52:08 nicm Exp $
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.\"
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.\"***************************************************************************
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.\" Copyright 2018-2020,2021 Thomas E. Dickey *
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.\" Copyright 1998-2005,2010 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: curs_beep.3,v 1.8 2023/10/17 09:52:08 nicm Exp $
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.TH curs_beep 3 2021-12-25 "ncurses 6.4" "Library calls"
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.SH NAME
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\fBbeep\fP, \fBflash\fP \- \fBcurses\fP bell and screen flash routines
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.SH SYNOPSIS
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\fB#include <curses.h>\fP
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.PP
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\fBint beep(void);\fP
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.br
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\fBint flash(void);\fP
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.br
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.SH DESCRIPTION
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The \fBbeep\fP and \fBflash\fP routines are used to alert the terminal user.
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The routine \fBbeep\fP sounds an audible alarm on the terminal, if possible;
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otherwise it flashes the screen (visible bell).
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The routine \fBflash\fP
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flashes the screen, and if that is not possible, sounds the alert.
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If neither
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alert is possible, nothing happens.
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Nearly all terminals have an audible alert
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(bell or beep), but only some can flash the screen.
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.SH RETURN VALUE
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These routines return \fBOK\fP if they succeed in beeping or flashing,
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\fBERR\fP otherwise.
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.SH EXTENSIONS
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SVr4's beep and flash routines always returned \fBOK\fP, so it was not
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possible to tell when the beep or flash failed.
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.SH PORTABILITY
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These functions are described in the XSI Curses standard, Issue 4.
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Like SVr4, it specifies that they always return \fBOK\fP.
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.SH SEE ALSO
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\fBcurses\fP(3)
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