/* Public Domain Curses */ #include <curspriv.h> RCSID("$Id: beep.c,v 1.34 2008/07/13 16:08:17 wmcbrine Exp $") /*man-start************************************************************** Name: beep Synopsis: int beep(void); int flash(void); Description: beep() sounds the audible bell on the terminal, if possible; if not, it calls flash(). flash() "flashes" the screen, by inverting the foreground and background of every cell, pausing, and then restoring the original attributes. Return Value: These functions return OK. Portability X/Open BSD SYS V beep Y Y Y flash Y Y Y **man-end****************************************************************/ int beep(void) { PDC_LOG(("beep() - called\n")); if (SP->audible) PDC_beep(); else flash(); return OK; } int flash(void) { int z, y, x; PDC_LOG(("flash() - called\n")); /* Reverse each cell; wait; restore the screen */ for (z = 0; z < 2; z++) { for (y = 0; y < LINES; y++) for (x = 0; x < COLS; x++) curscr->_y[y][x] ^= A_REVERSE; wrefresh(curscr); if (!z) napms(50); } return OK; }