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- * @Id: curs_inopts.3x,v 1.13 2005/05/15 16:18:07 tom Exp @
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ty, set echo or noecho explicitly just after initializa-
tion, even if your program remains in cooked mode.
+ When <STRONG>keypad</STRONG> is first enabled, ncurses loads the key-defi-
+ nitions for the current terminal description. If the ter-
+ minal description includes extended string capabilities,
+ e.g., from using the <STRONG>-x</STRONG> option of tic, then ncurses also
+ defines keys for the capabilities whose names begin with
+ "k". The corresponding keycodes are generated and (de-
+ pending on previous loads of terminal descriptions) may
+ differ from one execution of a program to the next. The
+ generated keycodes are recognized by the <STRONG>keyname</STRONG> function
+ (which will then return a name beginning with "k" denoting
+ the terminfo capability name rather than "K", used for
+ curses key-names). On the other hand, an application can
+ use <STRONG>define_key</STRONG> to establish a specific keycode for a given
+ string. This makes it possible for an application to
+ check for an extended capability's presence with <EM>tigetstr</EM>,
+ and reassign the keycode to match its own needs.
+
+ Low-level applications can use <STRONG>tigetstr</STRONG> to obtain the def-
+ inition of any particular string capability. Higher-level
+ applications which use the curses <STRONG>wgetch</STRONG> and similar func-
+ tions to return keycodes rely upon the order in which the
+ strings are loaded. If more than one key definition has
+ the same string value, then <STRONG>wgetch</STRONG> can return only one
+ keycode. Most curses implementations (including ncurses)
+ load key definitions in the order defined by the array of
+ string capability names. The last key to be loaded deter-
+ mines the keycode which will be returned. In ncurses, you
+ may also have extended capabilities interpreted as key
+ definitions. These are loaded after the predefined keys,
+ and if a capability's value is the same as a previously-
+ loaded key definition, the later definition is the one
+ used.
+
</PRE>
<H2>NOTES</H2><PRE>
- Note that <STRONG>echo</STRONG>, <STRONG>noecho</STRONG>, <STRONG>halfdelay</STRONG>, <STRONG>intrflush</STRONG>, <STRONG>meta</STRONG>, <STRONG>node-</STRONG>
- <STRONG>lay</STRONG>, <STRONG>notimeout</STRONG>, <STRONG>noqiflush</STRONG>, <STRONG>qiflush</STRONG>, <STRONG>timeout</STRONG>, and <STRONG>wtimeout</STRONG>
+ Note that <STRONG>echo</STRONG>, <STRONG>noecho</STRONG>, <STRONG>halfdelay</STRONG>, <STRONG>intrflush</STRONG>, <STRONG>meta</STRONG>, <STRONG>node-</STRONG>
+ <STRONG>lay</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 respectively. Mixing raw/noraw
- and cbreak/nocbreak calls leads to tty driver control
- states that are hard to predict or understand; it is not
+ that they attempt to restore to normal (`cooked') mode
+ from raw and cbreak modes respectively. Mixing raw/noraw
+ and cbreak/nocbreak calls leads to tty driver control
+ states that are hard to predict or understand; it is not
recommended.
</PRE>
<H2>SEE ALSO</H2><PRE>
- <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_getch.3x.html">curs_getch(3x)</A></STRONG>, <STRONG><A HREF="curs_initscr.3x.html">curs_initscr(3x)</A></STRONG>, <STRONG><A HREF="termio.7.html">termio(7)</A></STRONG>
+ <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_getch.3x.html">curs_getch(3x)</A></STRONG>, <STRONG><A HREF="curs_initscr.3x.html">curs_initscr(3x)</A></STRONG>,
+ <STRONG><A HREF="curs_util.3x.html">curs_util(3x)</A></STRONG>, <STRONG><A HREF="define_key.3x.html">define_key(3x)</A></STRONG>, <STRONG><A HREF="termio.7.html">termio(7)</A></STRONG>