aboutsummaryrefslogtreecommitdiff
path: root/doc/html/man/curs_inopts.3x.html
diff options
context:
space:
mode:
Diffstat (limited to 'doc/html/man/curs_inopts.3x.html')
-rw-r--r--doc/html/man/curs_inopts.3x.html137
1 files changed, 81 insertions, 56 deletions
diff --git a/doc/html/man/curs_inopts.3x.html b/doc/html/man/curs_inopts.3x.html
index 24f2ef964eae..533d6709f8c5 100644
--- a/doc/html/man/curs_inopts.3x.html
+++ b/doc/html/man/curs_inopts.3x.html
@@ -27,7 +27,7 @@
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************
- * @Id: curs_inopts.3x,v 1.29 2020/02/02 23:34:34 tom Exp @
+ * @Id: curs_inopts.3x,v 1.33 2020/12/05 19:38:18 Benno.Schulenberg Exp @
-->
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">
<HTML>
@@ -47,9 +47,9 @@
</PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
- <STRONG>cbreak</STRONG>, <STRONG>nocbreak</STRONG>, <STRONG>echo</STRONG>, <STRONG>noecho</STRONG>, <STRONG>halfdelay</STRONG>, <STRONG>intrflush</STRONG>, <STRONG>keypad</STRONG>, <STRONG>meta</STRONG>,
- <STRONG>nodelay</STRONG>, <STRONG>notimeout</STRONG>, <STRONG>raw</STRONG>, <STRONG>noraw</STRONG>, <STRONG>noqiflush</STRONG>, <STRONG>qiflush</STRONG>, <STRONG>timeout</STRONG>, <STRONG>wtimeout</STRONG>,
- <STRONG>typeahead</STRONG> - <STRONG>curses</STRONG> input options
+ <STRONG>cbreak</STRONG>, <STRONG>nocbreak</STRONG>, <STRONG>echo</STRONG>, <STRONG>noecho</STRONG>, <STRONG>halfdelay</STRONG>, <STRONG>intrflush</STRONG>, <STRONG>keypad</STRONG>, <STRONG>meta</STRONG>, <STRONG>nl</STRONG>,
+ <STRONG>nonl</STRONG>, <STRONG>nodelay</STRONG>, <STRONG>notimeout</STRONG>, <STRONG>raw</STRONG>, <STRONG>noraw</STRONG>, <STRONG>qiflush</STRONG>, <STRONG>noqiflush</STRONG>, <STRONG>timeout</STRONG>,
+ <STRONG>wtimeout</STRONG>, <STRONG>typeahead</STRONG> - <STRONG>curses</STRONG> input options
</PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
@@ -57,21 +57,30 @@
<STRONG>int</STRONG> <STRONG>cbreak(void);</STRONG>
<STRONG>int</STRONG> <STRONG>nocbreak(void);</STRONG>
+
<STRONG>int</STRONG> <STRONG>echo(void);</STRONG>
<STRONG>int</STRONG> <STRONG>noecho(void);</STRONG>
- <STRONG>int</STRONG> <STRONG>halfdelay(int</STRONG> <STRONG>tenths);</STRONG>
- <STRONG>int</STRONG> <STRONG>intrflush(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>bool</STRONG> <STRONG>bf);</STRONG>
- <STRONG>int</STRONG> <STRONG>keypad(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>bool</STRONG> <STRONG>bf);</STRONG>
- <STRONG>int</STRONG> <STRONG>meta(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>bool</STRONG> <STRONG>bf);</STRONG>
- <STRONG>int</STRONG> <STRONG>nodelay(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>bool</STRONG> <STRONG>bf);</STRONG>
+
+ <STRONG>int</STRONG> <STRONG>intrflush(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>bool</STRONG> <EM>bf</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>keypad(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>bool</STRONG> <EM>bf</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>meta(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>bool</STRONG> <EM>bf</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>nodelay(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>bool</STRONG> <EM>bf</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>notimeout(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>bool</STRONG> <EM>bf</EM><STRONG>);</STRONG>
+
+ <STRONG>int</STRONG> <STRONG>nl(void);</STRONG>
+ <STRONG>int</STRONG> <STRONG>nonl(void);</STRONG>
+
<STRONG>int</STRONG> <STRONG>raw(void);</STRONG>
<STRONG>int</STRONG> <STRONG>noraw(void);</STRONG>
- <STRONG>void</STRONG> <STRONG>noqiflush(void);</STRONG>
+
<STRONG>void</STRONG> <STRONG>qiflush(void);</STRONG>
- <STRONG>int</STRONG> <STRONG>notimeout(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>bool</STRONG> <STRONG>bf);</STRONG>
- <STRONG>void</STRONG> <STRONG>timeout(int</STRONG> <STRONG>delay);</STRONG>
- <STRONG>void</STRONG> <STRONG>wtimeout(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>delay);</STRONG>
- <STRONG>int</STRONG> <STRONG>typeahead(int</STRONG> <STRONG>fd);</STRONG>
+ <STRONG>void</STRONG> <STRONG>noqiflush(void);</STRONG>
+
+ <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>
@@ -83,7 +92,7 @@
behavior is needed.
-</PRE><H3><a name="h3-cbreak">cbreak</a></H3><PRE>
+</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-
@@ -153,73 +162,80 @@
<STRONG>FALSE</STRONG>) is called.
+</PRE><H3><a name="h3-nl_nonl">nl/nonl</a></H3><PRE>
+ The <STRONG>nl</STRONG> and <STRONG>nonl</STRONG> routines control whether the underlying display device
+ translates the return key into newline on input.
+
+
</PRE><H3><a name="h3-nodelay">nodelay</a></H3><PRE>
The <STRONG>nodelay</STRONG> option causes <STRONG>getch</STRONG> to be a non-blocking call. If no input
- is ready, <STRONG>getch</STRONG> returns <STRONG>ERR</STRONG>. If disabled (<EM>bf</EM> is <STRONG>FALSE</STRONG>), <STRONG>getch</STRONG> waits
+ is ready, <STRONG>getch</STRONG> returns <STRONG>ERR</STRONG>. If disabled (<EM>bf</EM> is <STRONG>FALSE</STRONG>), <STRONG>getch</STRONG> waits
until a key is pressed.
- While interpreting an input escape sequence, <STRONG><A HREF="curs_getch.3x.html">wgetch(3x)</A></STRONG> sets a timer
- while waiting for the next character. If <STRONG>notimeout(</STRONG><EM>win</EM>, <STRONG>TRUE</STRONG>) is
- called, then <STRONG>wgetch</STRONG> does not set a timer. The purpose of the timeout
- is to differentiate between sequences received from a function key and
- those typed by a user.
+
+</PRE><H3><a name="h3-notimeout">notimeout</a></H3><PRE>
+ When interpreting an escape sequence, <STRONG><A HREF="curs_getch.3x.html">wgetch(3x)</A></STRONG> sets a timer while
+ waiting for the next character. If <STRONG>notimeout(</STRONG><EM>win</EM>, <STRONG>TRUE</STRONG>) is called,
+ then <STRONG>wgetch</STRONG> does not set a timer. The purpose of the timeout is to
+ differentiate between sequences received from a function key and those
+ typed by a user.
</PRE><H3><a name="h3-raw_noraw">raw/noraw</a></H3><PRE>
- The <STRONG>raw</STRONG> and <STRONG>noraw</STRONG> routines place the terminal into or out of raw mode.
- Raw mode is similar to <STRONG>cbreak</STRONG> mode, in that characters typed are imme-
- diately passed through to the user program. The differences are that
- in raw mode, the interrupt, quit, suspend, and flow control characters
- are all passed through uninterpreted, instead of generating a signal.
- The behavior of the BREAK key depends on other bits in the tty driver
+ The <STRONG>raw</STRONG> and <STRONG>noraw</STRONG> routines place the terminal into or out of raw mode.
+ Raw mode is similar to <STRONG>cbreak</STRONG> mode, in that characters typed are imme-
+ diately passed through to the user program. The differences are that
+ in raw mode, the interrupt, quit, suspend, and flow control characters
+ are all passed through uninterpreted, instead of generating a signal.
+ The behavior of the BREAK key depends on other bits in the tty driver
that are not set by <STRONG>curses</STRONG>.
-</PRE><H3><a name="h3-noqiflush">noqiflush</a></H3><PRE>
- When the <STRONG>noqiflush</STRONG> routine is used, normal flush of input and output
- queues associated with the <STRONG>INTR</STRONG>, <STRONG>QUIT</STRONG> and <STRONG>SUSP</STRONG> characters will not be
- done [see <STRONG>termios(3)</STRONG>]. When <STRONG>qiflush</STRONG> is called, the queues will be
- flushed when these control characters are read. You may want to call
- <STRONG>noqiflush</STRONG> in a signal handler if you want output to continue as though
+</PRE><H3><a name="h3-qiflush_noqiflush">qiflush/noqiflush</a></H3><PRE>
+ When the <STRONG>noqiflush</STRONG> routine is used, normal flush of input and output
+ queues associated with the <STRONG>INTR</STRONG>, <STRONG>QUIT</STRONG> and <STRONG>SUSP</STRONG> characters will not be
+ done [see <STRONG>termios(3)</STRONG>]. When <STRONG>qiflush</STRONG> is called, the queues will be
+ flushed when these control characters are read. You may want to call
+ <STRONG>noqiflush</STRONG> in a signal handler if you want output to continue as though
the interrupt had not occurred, after the handler exits.
</PRE><H3><a name="h3-timeout_wtimeout">timeout/wtimeout</a></H3><PRE>
The <STRONG>timeout</STRONG> and <STRONG>wtimeout</STRONG> routines set blocking or non-blocking read for
- a given window. If <EM>delay</EM> is negative, blocking read is used (i.e.,
- waits indefinitely for input). If <EM>delay</EM> is zero, then non-blocking
+ a given window. If <EM>delay</EM> is negative, blocking read is used (i.e.,
+ waits indefinitely for input). If <EM>delay</EM> is zero, then non-blocking
read is used (i.e., read returns <STRONG>ERR</STRONG> if no input is waiting). If <EM>delay</EM>
- is positive, then read blocks for <EM>delay</EM> milliseconds, and returns <STRONG>ERR</STRONG>
- if there is still no input. Hence, these routines provide the same
- functionality as <STRONG>nodelay</STRONG>, plus the additional capability of being able
+ is positive, then read blocks for <EM>delay</EM> milliseconds, and returns <STRONG>ERR</STRONG>
+ if there is still no input. Hence, these routines provide the same
+ functionality as <STRONG>nodelay</STRONG>, plus the additional capability of being able
to block for only <EM>delay</EM> milliseconds (where <EM>delay</EM> is positive).
</PRE><H3><a name="h3-typeahead">typeahead</a></H3><PRE>
The <STRONG>curses</STRONG> library does "line-breakout optimization" by looking for ty-
peahead periodically while updating the screen. If input is found, and
- it is coming from a tty, the current update is postponed until <STRONG>re-</STRONG>
- <STRONG><A HREF="refresh.3x.html">fresh(3x)</A></STRONG> or <STRONG>doupdate</STRONG> is called again. This allows faster response to
- commands typed in advance. Normally, the input FILE pointer passed to
+ it is coming from a tty, the current update is postponed until <STRONG>re-</STRONG>
+ <STRONG><A HREF="refresh.3x.html">fresh(3x)</A></STRONG> or <STRONG>doupdate</STRONG> is called again. This allows faster response to
+ commands typed in advance. Normally, the input FILE pointer passed to
<STRONG>newterm</STRONG>, or <STRONG>stdin</STRONG> in the case that <STRONG>initscr</STRONG> was used, will be used to do
this typeahead checking. The <STRONG>typeahead</STRONG> routine specifies that the file
- descriptor <EM>fd</EM> is to be used to check for typeahead instead. If <EM>fd</EM> is
+ descriptor <EM>fd</EM> is to be used to check for typeahead instead. If <EM>fd</EM> is
-1, then no typeahead checking is done.
</PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
- All routines that return an integer return <STRONG>ERR</STRONG> upon failure and <STRONG>OK</STRONG>
+ All routines that return an integer return <STRONG>ERR</STRONG> upon failure and <STRONG>OK</STRONG>
(SVr4 specifies only "an integer value other than <STRONG>ERR</STRONG>") upon successful
- completion, unless otherwise noted in the preceding routine descrip-
+ completion, unless otherwise noted in the preceding routine descrip-
tions.
- X/Open does not define any error conditions. In this implementation,
- functions with a window parameter will return an error if it is null.
+ X/Open does not define any error conditions. In this implementation,
+ functions with a window parameter will return an error if it is null.
Any function will also return an error if the terminal was not initial-
ized. Also,
<STRONG>halfdelay</STRONG>
- returns an error if its parameter is outside the range
+ returns an error if its parameter is outside the range
1..255.
@@ -227,13 +243,20 @@
These functions are described in the XSI Curses standard, Issue 4.
The ncurses library obeys the XPG4 standard and the historical practice
- of the AT&amp;T curses implementations, in that the echo bit is cleared
- when curses initializes the terminal state. BSD curses differed from
- this slightly; it left the echo bit on at initialization, but the BSD
- <STRONG>raw</STRONG> call turned it off as a side-effect. For best portability, set
- echo or noecho explicitly just after initialization, even if your pro-
+ of the AT&amp;T curses implementations, in that the echo bit is cleared
+ when curses initializes the terminal state. BSD curses differed from
+ this slightly; it left the echo bit on at initialization, but the BSD
+ <STRONG>raw</STRONG> call turned it off as a side-effect. For best portability, set
+ <STRONG>echo</STRONG> or <STRONG>noecho</STRONG> explicitly just after initialization, even if your pro-
gram remains in cooked mode.
+ The XSI Curses standard is ambiguous on the question of whether <STRONG>raw</STRONG>
+ should disable the CRLF translations controlled by <STRONG>nl</STRONG> and <STRONG>nonl</STRONG>. BSD
+ curses did turn off these translations; AT&amp;T curses (at least as late
+ as SVr1) did not. We chose to do so, on the theory that a programmer
+ requesting raw input wants a clean (ideally 8-bit clean) connection
+ that the operating system will not alter.
+
When <STRONG>keypad</STRONG> is first enabled, ncurses loads the key-definitions for the
current terminal description. If the terminal description includes ex-
tended string capabilities, e.g., from using the <STRONG>-x</STRONG> option of <STRONG>tic</STRONG>, then
@@ -263,8 +286,8 @@
</PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
- Note that <STRONG>echo</STRONG>, <STRONG>noecho</STRONG>, <STRONG>halfdelay</STRONG>, <STRONG>intrflush</STRONG>, <STRONG>meta</STRONG>, <STRONG>nodelay</STRONG>, <STRONG>notimeout</STRONG>,
- <STRONG>noqiflush</STRONG>, <STRONG>qiflush</STRONG>, <STRONG>timeout</STRONG>, and <STRONG>wtimeout</STRONG> may be macros.
+ Note that <STRONG>echo</STRONG>, <STRONG>noecho</STRONG>, <STRONG>halfdelay</STRONG>, <STRONG>intrflush</STRONG>, <STRONG>meta</STRONG>, <STRONG>nl</STRONG>, <STRONG>nonl</STRONG>, <STRONG>nodelay</STRONG>,
+ <STRONG>notimeout</STRONG>, <STRONG>noqiflush</STRONG>, <STRONG>qiflush</STRONG>, <STRONG>timeout</STRONG>, and <STRONG>wtimeout</STRONG> may be macros.
The <STRONG>noraw</STRONG> and <STRONG>nocbreak</STRONG> calls follow historical practice in that they
attempt to restore to normal ("cooked") mode from raw and cbreak modes
@@ -287,15 +310,17 @@
<li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
<li><a href="#h2-DESCRIPTION">DESCRIPTION</a>
<ul>
-<li><a href="#h3-cbreak">cbreak</a></li>
+<li><a href="#h3-cbreak_nocbreak">cbreak/nocbreak</a></li>
<li><a href="#h3-echo_noecho">echo/noecho</a></li>
<li><a href="#h3-halfdelay">halfdelay</a></li>
<li><a href="#h3-intrflush">intrflush</a></li>
<li><a href="#h3-keypad">keypad</a></li>
<li><a href="#h3-meta">meta</a></li>
+<li><a href="#h3-nl_nonl">nl/nonl</a></li>
<li><a href="#h3-nodelay">nodelay</a></li>
+<li><a href="#h3-notimeout">notimeout</a></li>
<li><a href="#h3-raw_noraw">raw/noraw</a></li>
-<li><a href="#h3-noqiflush">noqiflush</a></li>
+<li><a href="#h3-qiflush_noqiflush">qiflush/noqiflush</a></li>
<li><a href="#h3-timeout_wtimeout">timeout/wtimeout</a></li>
<li><a href="#h3-typeahead">typeahead</a></li>
</ul>