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Red Bear OS is a full fork. All sources must be available from git clone with zero network access. Removed gitignore rules that excluded fetched source trees under recipes/*/source/, local/recipes/kde/*/source/, local/recipes/qt/*/source/, and vendor source trees. Build artifacts (target/, build/, source.tar, *.o, *.so) remain excluded. 127291 files added — kernel, relibc, base, bootloader, pkgar, all KDE/Qt frameworks, mesa, wayland, DRM drivers, and every other recipe source.
111 lines
3.8 KiB
Plaintext
111 lines
3.8 KiB
Plaintext
.\"***************************************************************************
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.\" Copyright 2018-2024,2025 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.3x,v 1.42 2025/02/01 23:46:11 tom Exp $
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.TH curs_beep 3X 2025-02-01 "ncurses @NCURSES_MAJOR@.@NCURSES_MINOR@" "Library calls"
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.SH NAME
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\fB\%beep\fP,
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\fB\%flash\fP \-
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ring the (visual) bell of the terminal with \fIcurses\fR
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.SH SYNOPSIS
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.nf
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\fB#include <curses.h>
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.PP
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\fBint beep(void);
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\fBint flash(void);
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.fi
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.SH DESCRIPTION
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.B beep
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and
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.B flash
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alert the terminal user:
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the former by sounding the terminal's audible alarm,
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and the latter by visibly attracting attention.
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Commonly,
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a terminal implements a visual bell by momentarily reversing the
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character foreground and background colors on the entire display;
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even a monochrome device can do this.
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These functions each attempt the other alert type if the one requested
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is unavailable.
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If neither is available,
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.I curses
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performs no action.
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Nearly all terminals have an audible alert mechanism such as a bell or
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piezoelectric buzzer,
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but only some can flash the screen.
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.SH RETURN VALUE
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These functions return
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.B OK
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on success and
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.B ERR
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on failure.
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.PP
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In
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.IR \%ncurses ","
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.B beep
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and
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.B flash
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return
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.B OK
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if the terminal type supports the corresponding capability:
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.B bell
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.RB ( bel )
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for
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.B beep
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and
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.B \%flash_screen
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.RB ( flash )
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for
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.BR flash "."
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Otherwise they return
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.BR ERR "."
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.SH EXTENSIONS
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In
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.IR \%ncurses ","
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these functions can return
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.BR ERR "."
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.SH PORTABILITY
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X/Open Curses Issue\ 4 describes these functions.
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It specifies no error conditions for them.
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.PP
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On SVr4
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.IR curses ","
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they always return
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.IR OK ","
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and X/Open Curses specifies them as doing so.
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.SH HISTORY
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SVr2 (1984)
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introduced
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.I beep
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and
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.IR flash "."
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.SH SEE ALSO
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\fB\%curses\fP(3X),
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\fB\%terminfo\fP(5)
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