--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/pdcurses/beep.c Thu Jul 23 18:07:39 2015 +0300
@@ -0,0 +1,65 @@
+/* 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;
+}