+ <STRONG>int</STRONG> <STRONG>halfdelay(int</STRONG> <EM>tenths</EM><STRONG>);</STRONG>
+ <STRONG>void</STRONG> <STRONG>timeout(int</STRONG> <EM>delay</EM><STRONG>);</STRONG>
+ <STRONG>void</STRONG> <STRONG>wtimeout(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>delay</EM><STRONG>);</STRONG>
+
+ <STRONG>int</STRONG> <STRONG>typeahead(int</STRONG> <EM>fd</EM><STRONG>);</STRONG>
+
+
+</PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
+ The <STRONG>ncurses</STRONG> library provides several functions which let an application
+ change the way input from the terminal is handled. Some are global,
+ applying to all windows. Others apply only to a specific window. Win-
+ dow-specific settings are not automatically applied to new or derived
+ windows. An application must apply these to each window, if the same
+ behavior is needed.
+
+
+</PRE><H3><a name="h3-cbreak_nocbreak">cbreak/nocbreak</a></H3><PRE>
+ Normally, the tty driver buffers typed characters until a newline or
+ carriage return is typed. The <STRONG>cbreak</STRONG> routine disables line buffering
+ and erase/kill character-processing (interrupt and flow control charac-
+ ters are unaffected), making characters typed by the user immediately
+ available to the program. The <STRONG>nocbreak</STRONG> routine returns the terminal to
+ normal (cooked) mode.
+
+ Initially the terminal may or may not be in <STRONG>cbreak</STRONG> mode, as the mode is
+ inherited; therefore, a program should call <STRONG>cbreak</STRONG> or <STRONG>nocbreak</STRONG> explic-
+ itly. Most interactive programs using <STRONG>curses</STRONG> set the <STRONG>cbreak</STRONG> mode.
+ Note that <STRONG>cbreak</STRONG> overrides <STRONG>raw</STRONG>. [See <STRONG><A HREF="curs_getch.3x.html">curs_getch(3x)</A></STRONG> for a discussion
+ of how these routines interact with <STRONG>echo</STRONG> and <STRONG>noecho</STRONG>.]
+
+
+</PRE><H3><a name="h3-echo_noecho">echo/noecho</a></H3><PRE>
+ The <STRONG>echo</STRONG> and <STRONG>noecho</STRONG> routines control whether characters typed by the
+ user are echoed by <STRONG><A HREF="curs_getch.3x.html">getch(3x)</A></STRONG> as they are typed. Echoing by the tty
+ driver is always disabled, but initially <STRONG>getch</STRONG> is in echo mode, so
+ characters typed are echoed. Authors of most interactive programs pre-
+ fer to do their own echoing in a controlled area of the screen, or not
+ to echo at all, so they disable echoing by calling <STRONG>noecho</STRONG>. [See
+ <STRONG><A HREF="curs_getch.3x.html">curs_getch(3x)</A></STRONG> for a discussion of how these routines interact with
+ <STRONG>cbreak</STRONG> and <STRONG>nocbreak</STRONG>.]
+
+
+</PRE><H3><a name="h3-halfdelay">halfdelay</a></H3><PRE>
+ The <STRONG>halfdelay</STRONG> routine is used for half-delay mode, which is similar to
+ <STRONG>cbreak</STRONG> mode in that characters typed by the user are immediately avail-
+ able to the program. However, after blocking for <EM>tenths</EM> tenths of sec-
+ onds, <STRONG>ERR</STRONG> is returned if nothing has been typed. The value of <EM>tenths</EM>
+ must be a number between 1 and 255. Use <STRONG>nocbreak</STRONG> to leave half-delay
+ mode.
+
+
+</PRE><H3><a name="h3-intrflush">intrflush</a></H3><PRE>
+ If the <STRONG>intrflush</STRONG> option is enabled (<EM>bf</EM> is <STRONG>TRUE</STRONG>), and an interrupt key
+ is pressed on the keyboard (interrupt, break, quit), all output in the
+ tty driver queue will be flushed, giving the effect of faster response
+ to the interrupt, but causing <STRONG>curses</STRONG> to have the wrong idea of what is
+ on the screen. Disabling the option (<EM>bf</EM> is <STRONG>FALSE</STRONG>) prevents the flush.
+ The default for the option is inherited from the tty driver settings.
+ The window argument is ignored.
+
+
+</PRE><H3><a name="h3-keypad">keypad</a></H3><PRE>
+ The <STRONG>keypad</STRONG> option enables the keypad of the user's terminal. If en-
+ abled (<EM>bf</EM> is <STRONG>TRUE</STRONG>), the user can press a function key (such as an arrow
+ key) and <STRONG><A HREF="curs_getch.3x.html">wgetch(3x)</A></STRONG> returns a single value representing the function
+ key, as in <STRONG>KEY_LEFT</STRONG>. If disabled (<EM>bf</EM> is <STRONG>FALSE</STRONG>), <STRONG>curses</STRONG> does not treat
+ function keys specially and the program has to interpret the escape se-
+ quences itself. If the keypad in the terminal can be turned on (made
+ to transmit) and off (made to work locally), turning on this option
+ causes the terminal keypad to be turned on when <STRONG><A HREF="curs_getch.3x.html">wgetch(3x)</A></STRONG> is called.
+ The default value for keypad is <STRONG>FALSE</STRONG>.
+
+
+</PRE><H3><a name="h3-meta">meta</a></H3><PRE>
+ Initially, whether the terminal returns 7 or 8 significant bits on in-
+ put depends on the control mode of the tty driver [see <STRONG>termios(3)</STRONG>]. To
+ force 8 bits to be returned, invoke <STRONG>meta</STRONG>(<EM>win</EM>, <STRONG>TRUE</STRONG>); this is equiva-
+ lent, under POSIX, to setting the CS8 flag on the terminal. To force 7
+ bits to be returned, invoke <STRONG>meta</STRONG>(<EM>win</EM>, <STRONG>FALSE</STRONG>); this is equivalent, under
+ POSIX, to setting the CS7 flag on the terminal. The window argument,
+ <EM>win</EM>, is always ignored. If the terminfo capabilities <STRONG>smm</STRONG> (meta_on) and
+ <STRONG>rmm</STRONG> (meta_off) are defined for the terminal, <STRONG>smm</STRONG> is sent to the termi-
+ nal when <STRONG>meta</STRONG>(<EM>win</EM>, <STRONG>TRUE</STRONG>) is called and <STRONG>rmm</STRONG> is sent when <STRONG>meta</STRONG>(<EM>win</EM>,
+ <STRONG>FALSE</STRONG>) is called.