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29 .\" $Id: curs_beep.3x,v 1.12 2010/12/04 18:36:44 tom Exp $
32 \fBbeep\fR, \fBflash\fR \- \fBcurses\fR bell and screen flash routines
34 \fB#include <curses.h>\fR
38 \fBint flash(void);\fR
41 The \fBbeep\fR and \fBflash\fR routines are used to alert the terminal user.
42 The routine \fBbeep\fR sounds an audible alarm on the terminal, if possible;
43 otherwise it flashes the screen (visible bell). The routine \fBflash\fR
44 flashes the screen, and if that is not possible, sounds the alert. If neither
45 alert is possible, nothing happens. Nearly all terminals have an audible alert
46 (bell or beep), but only some can flash the screen.
48 These routines return \fBOK\fR if they succeed in beeping or flashing,
51 SVr4's beep and flash routines always returned \fBOK\fR, so it was not
52 possible to tell when the beep or flash failed.
54 These functions are described in the XSI Curses standard, Issue 4.
55 Like SVr4, it specifies that they always return \fBOK\fR.