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- * @Id: curs_initscr.3x,v 1.56 2023/12/03 00:09:54 tom Exp @
+ * @Id: curs_initscr.3x,v 1.59 2023/12/17 23:56:04 tom Exp @
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-<H1 class="no-header">curs_initscr 3x 2023-12-02 ncurses 6.4 Library calls</H1>
+<H1 class="no-header">curs_initscr 3x 2023-12-17 ncurses 6.4 Library calls</H1>
<PRE>
<STRONG><A HREF="curs_initscr.3x.html">curs_initscr(3x)</A></STRONG> Library calls <STRONG><A HREF="curs_initscr.3x.html">curs_initscr(3x)</A></STRONG>
X/Open specifies that portable applications must not call <STRONG>initscr</STRONG> more
than once:
- <STRONG>o</STRONG> The portable way to use <STRONG>initscr</STRONG> is once only, using <STRONG>refresh</STRONG> (see
- <STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG>) to restore the screen after <STRONG>endwin</STRONG>.
+ <STRONG>o</STRONG> The portable way to use <STRONG>initscr</STRONG> is once only, using <STRONG><A HREF="curs_refresh.3x.html">refresh(3x)</A></STRONG> to
+ restore the screen after <STRONG>endwin</STRONG>.
<STRONG>o</STRONG> This implementation allows using <STRONG>initscr</STRONG> after <STRONG>endwin</STRONG>.
<STRONG>curscr</STRONG> as well as a work area <STRONG>newscr</STRONG>. SVr4 curses ignores other
windows.
- <STRONG>o</STRONG> Since version 4.0 (1996), ncurses has maintained a list of all
+ <STRONG>o</STRONG> Since version 4.0 (1996), <EM>ncurses</EM> has maintained a list of all
windows for each screen, using that information to delete those
windows when <STRONG>delscreen</STRONG> is called.
- <STRONG>o</STRONG> NetBSD copied this feature of ncurses in 2001. PDCurses follows
+ <STRONG>o</STRONG> NetBSD copied this feature of <EM>ncurses</EM> in 2001. PDCurses follows
the SVr4 model, deleting only the standard <STRONG>WINDOW</STRONG> structures.
-</PRE><H3><a name="h3-High-level-versus-
low-level">High-level versus low-level</a></H3><PRE>
+</PRE><H3><a name="h3-High-level-versus-
Low-level">High-level versus Low-level</a></H3><PRE>
Different implementations may disagree regarding the level of some
functions. For example, <STRONG>SCREEN</STRONG> (returned by <STRONG>newterm</STRONG>) and <STRONG>TERMINAL</STRONG>
(returned by <STRONG><A HREF="curs_terminfo.3x.html">setupterm(3x)</A></STRONG>) hold file descriptors for the output
For example
<STRONG>o</STRONG> NetBSD's <STRONG><A HREF="curs_termattrs.3x.html">baudrate(3x)</A></STRONG> function uses the descriptor in <STRONG>TERMINAL</STRONG>.
- <STRONG>ncurses</STRONG> and SVr4 use the descriptor in <STRONG>SCREEN</STRONG>.
+ <EM>ncurses</EM> and SVr4 use the descriptor in <STRONG>SCREEN</STRONG>.
- <STRONG>o</STRONG> NetBSD and <STRONG>ncurses</STRONG> use the descriptor in <STRONG>TERMINAL</STRONG> for terminal I/O
+ <STRONG>o</STRONG> NetBSD and <EM>ncurses</EM> use the descriptor in <STRONG>TERMINAL</STRONG> for terminal I/O
modes, e.g., <STRONG><A HREF="curs_kernel.3x.html">def_shell_mode(3x)</A></STRONG>, <STRONG><A HREF="curs_kernel.3x.html">def_prog_mode(3x)</A></STRONG>. SVr4 curses
uses the descriptor in <STRONG>SCREEN</STRONG>.
-
-</PRE><H3><a name="h3-Unset-TERM-Variable">Unset TERM Variable</a></H3><PRE>
+ <STRONG>Unset</STRONG> <EM>TERM</EM> <STRONG>Variable</STRONG>
If the <EM>TERM</EM> variable is missing or empty, <STRONG>initscr</STRONG> uses the value
"unknown", which normally corresponds to a terminal entry with the
<EM>generic</EM> (<EM>gn</EM>) capability. Generic entries are detected by <STRONG><A HREF="curs_terminfo.3x.html">setupterm(3x)</A></STRONG>
<STRONG>SIGTSTP</STRONG>
This handles the <EM>stop</EM> signal, used in job control. When resuming
the process, this implementation discards pending input with
- <STRONG>flushinput</STRONG> (see <STRONG><A HREF="curs_util.3x.html">curs_util(3x)</A></STRONG>), and repaints the screen assuming
- that it has been completely altered. It also updates the saved
- terminal modes with <STRONG>def_shell_mode</STRONG> (see <STRONG><A HREF="curs_kernel.3x.html">curs_kernel(3x)</A></STRONG>).
+ <STRONG><A HREF="curs_util.3x.html">flushinp(3x)</A></STRONG>, and repaints the screen assuming that it has been
+ completely altered. It also updates the saved terminal modes with
+ <STRONG><A HREF="curs_kernel.3x.html">def_shell_mode(3x)</A></STRONG>.
<STRONG>SIGWINCH</STRONG>
This handles the window-size changes which were ignored in the
standardization efforts. The handler sets a (signal-safe)
- variable which is later tested in <STRONG>wgetch</STRONG> (see <STRONG><A HREF="curs_getch.3x.html">curs_getch(3x)</A></STRONG>). If
- <STRONG>keypad</STRONG> has been enabled for the corresponding window, <STRONG>wgetch</STRONG>
- returns the key symbol <STRONG>KEY_RESIZE</STRONG>. At the same time, <STRONG>wgetch</STRONG> calls
- <STRONG>resizeterm</STRONG> to adjust the standard screen <STRONG>stdscr</STRONG>, and update other
- data such as <STRONG>LINES</STRONG> and <STRONG>COLS</STRONG>.
+ variable which is later tested in <STRONG><A HREF="curs_getch.3x.html">wgetch(3x)</A></STRONG>. If <STRONG>keypad</STRONG> has been
+ enabled for the corresponding window, <STRONG>wgetch</STRONG> returns the key
+ symbol <STRONG>KEY_RESIZE</STRONG>. At the same time, <STRONG>wgetch</STRONG> calls <STRONG>resizeterm</STRONG> to
+ adjust the standard screen <STRONG>stdscr</STRONG>, and update other data such as
+ <STRONG>LINES</STRONG> and <STRONG>COLS</STRONG>.
</PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
-ncurses 6.4 2023-12-
02 <STRONG><A HREF="curs_initscr.3x.html">curs_initscr(3x)</A></STRONG>
+ncurses 6.4 2023-12-
17 <STRONG><A HREF="curs_initscr.3x.html">curs_initscr(3x)</A></STRONG>
</PRE>
<div class="nav">
<ul>
<li><a href="#h2-PORTABILITY">PORTABILITY</a>
<ul>
<li><a href="#h3-Differences">Differences</a></li>
-<li><a href="#h3-High-level-versus-low-level">High-level versus low-level</a></li>
-<li><a href="#h3-Unset-TERM-Variable">Unset TERM Variable</a></li>
+<li><a href="#h3-High-level-versus-Low-level">High-level versus Low-level</a></li>
<li><a href="#h3-Signal-Handlers">Signal Handlers</a></li>
</ul>
</li>
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