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30 .\" $Id: curs_beep.3x,v 1.31 2024/05/18 20:06:33 tom Exp $
31 .TH curs_beep 3X 2024-05-18 "ncurses @NCURSES_MAJOR@.@NCURSES_MINOR@" "Library calls"
35 ring the (visual) bell of the terminal with \fIcurses\fR
38 \fB#include <curses.h>
47 alert the terminal user:
48 the former by sounding the terminal's audible alarm,
49 and the latter by visibly attracting user attention.
51 a terminal implements a visual bell by momentarily reversing the
52 character foreground and background colors on the entire display;
53 even a monochrome device can do this.
54 These functions each attempt the other alert type if the one requested
56 If neither is available,
59 Nearly all terminals have an audible alert mechanism such as a bell or
61 but only some can flash the screen.
63 These functions return
76 if the terminal type supports the corresponding capability:
91 these functions can return
95 Issue 4 describes these functions.
96 It specifies no error conditions for them.
102 and X/Open Curses specifies them as doing so.
107 appeared in SVr2 (1984).