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- * @Id: curs_outopts.3x,v 1.52 2023/11/25 14:08:05 tom Exp @
+ * @Id: curs_outopts.3x,v 1.64 2024/04/20 21:24:19 tom Exp @
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+<TITLE>curs_outopts 3x 2024-04-20 ncurses 6.5 Library calls</TITLE>
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-<H1 class="no-header">curs_outopts 3x 2023-11-25 ncurses 6.4 Library calls</H1>
+<H1 class="no-header">curs_outopts 3x 2024-04-20 ncurses 6.5 Library calls</H1>
<PRE>
<STRONG><A HREF="curs_outopts.3x.html">curs_outopts(3x)</A></STRONG> Library calls <STRONG><A HREF="curs_outopts.3x.html">curs_outopts(3x)</A></STRONG>
the terminal, it is also necessary to call <STRONG>idlok</STRONG>).
-</PRE><H3><a name="h3-setscrreg_wsetscrreg">setscrreg
/wsetscrreg</a></H3><PRE>
+</PRE><H3><a name="h3-setscrreg_wsetscrreg">setscrreg
, wsetscrreg</a></H3><PRE>
The <STRONG>setscrreg</STRONG> and <STRONG>wsetscrreg</STRONG> routines allow the application programmer
to set a software scrolling region in a window. The <EM>top</EM> and <EM>bot</EM>
parameters are the line numbers of the top and bottom margin of the
upon failure. All other routines that return an integer always return
<STRONG>OK</STRONG>.
- X/Open Curses does not define any error conditions.
+ X/Open Curses does not specify any error conditions.
In this implementation,
the window pointer is null
<STRONG>o</STRONG> <STRONG>wsetscrreg</STRONG> returns an error if the scrolling region limits extend
- outside the window.
-
- X/Open does not define any error conditions. This implementation
- returns an error if the window pointer is null.
+ outside the window boundaries.
</PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
- Note that <STRONG>clearok</STRONG>, <STRONG>leaveok</STRONG>, <STRONG>scrollok</STRONG>, <STRONG>idcok</STRONG>, and <STRONG>setscrreg</STRONG> may be
+ Note that <STRONG>clearok</STRONG>, <STRONG>leaveok</STRONG>, <STRONG>scrollok</STRONG>, <STRONG>idcok</STRONG>, and <STRONG>setscrreg</STRONG> may be
macros.
- The <STRONG>immedok</STRONG> routine is useful for windows that are used as terminal
+ The <STRONG>immedok</STRONG> routine is useful for windows that are used as terminal
emulators.
</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
- These functions are described in the XSI Curses standard, Issue 4.
-
- From the outset, ncurses used <STRONG>nl</STRONG>/<STRONG>nonl</STRONG> to control the conversion of
- newlines to carriage return/line-feed on output as well as input. XSI
- Curses documents only the use of these functions for input. This
- difference arose from converting the <EM>pcurses</EM> source (which used <STRONG>ioctl</STRONG>
- calls with the <STRONG>sgttyb</STRONG> structure) to termios (i.e., the POSIX terminal
- interface). In the former, both input and output were controlled via a
- single option <STRONG>CRMOD</STRONG>, while the latter separates these features.
- Because that conversion interferes with output optimization, <STRONG>nl</STRONG>/<STRONG>nonl</STRONG>
- were amended after ncurses 6.2 to eliminate their effect on output.
-
- Some historic curses implementations had, as an undocumented feature,
+ These functions are described in X/Open Curses, Issue 4.
+
+ Some historic curses implementations had, as an undocumented feature,
the ability to do the equivalent of <STRONG>clearok(...,</STRONG> <STRONG>1)</STRONG> by saying
- <STRONG>touchwin(stdscr)</STRONG> or <STRONG>clear(stdscr)</STRONG>. This will not work under ncurses.
+ <STRONG>touchwin(stdscr)</STRONG> or <STRONG>clear(stdscr)</STRONG>. This will not work under <EM>ncurses</EM>.
+
+ Earlier System V curses implementations specified that with <STRONG>scrollok</STRONG>
+ enabled, any window modification triggering a scroll also forced a
+ physical refresh. X/Open Curses does not require this, and <EM>ncurses</EM>
+ avoids doing it to perform better vertical-motion optimization at
+ <STRONG>wrefresh</STRONG> time.
+
+ X/Open Curses does not mention that the cursor should be made invisible
+ as a side-effect of <STRONG>leaveok</STRONG>. SVr4 curses documentation does this, but
+ the code does not. Use <STRONG>curs_set</STRONG> to make the cursor invisible.
- Earlier System V curses implementations specified that with <STRONG>scrollok</STRONG>
- enabled, any window modification triggering a scroll also forced a
- physical refresh. XSI Curses does not require this, and <STRONG>ncurses</STRONG> avoids
- doing it to perform better vertical-motion optimization at <STRONG>wrefresh</STRONG>
- time.
- The XSI Curses standard does not mention that the cursor should be made
- invisible as a side-effect of <STRONG>leaveok</STRONG>. SVr4 curses documentation does
- this, but the code does not. Use <STRONG>curs_set</STRONG> to make the cursor
- invisible.
+</PRE><H2><a name="h2-HISTORY">HISTORY</a></H2><PRE>
+ <EM>ncurses</EM> formerly treated <STRONG><A HREF="curs_inopts.3x.html">nl(3x)</A></STRONG> and <STRONG><A HREF="curs_inopts.3x.html">nonl(3x)</A></STRONG> as both input <EM>and</EM> output
+ options, but no longer; see <STRONG><A HREF="curs_inopts.3x.html">curs_inopts(3x)</A></STRONG>.
</PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
- <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>,
<STRONG><A HREF="curs_addch.3x.html">curs_addch(3x)</A></STRONG>, <STRONG><A HREF="curs_clear.3x.html">curs_clear(3x)</A></STRONG>, <STRONG><A HREF="curs_initscr.3x.html">curs_initscr(3x)</A></STRONG>,
+ <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>,
<STRONG><A HREF="curs_addch.3x.html">curs_addch(3x)</A></STRONG>, <STRONG><A HREF="curs_clear.3x.html">curs_clear(3x)</A></STRONG>, <STRONG><A HREF="curs_initscr.3x.html">curs_initscr(3x)</A></STRONG>,
<STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG>, <STRONG><A HREF="curs_scroll.3x.html">curs_scroll(3x)</A></STRONG>, <STRONG><A HREF="curs_variables.3x.html">curs_variables(3x)</A></STRONG>
-ncurses 6.
4 2023-11-25 <STRONG><A HREF="curs_outopts.3x.html">curs_outopts(3x)</A></STRONG>
+ncurses 6.
5 2024-04-20 <STRONG><A HREF="curs_outopts.3x.html">curs_outopts(3x)</A></STRONG>
</PRE>
<div class="nav">
<ul>
<li><a href="#h3-immedok">immedok</a></li>
<li><a href="#h3-leaveok">leaveok</a></li>
<li><a href="#h3-scrollok">scrollok</a></li>
-<li><a href="#h3-setscrreg_wsetscrreg">setscrreg/wsetscrreg</a></li>
+<li><a href="#h3-setscrreg_wsetscrreg">setscrreg, wsetscrreg</a></li>
</ul>
</li>
<li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
<li><a href="#h2-NOTES">NOTES</a></li>
<li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
+<li><a href="#h2-HISTORY">HISTORY</a></li>
<li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
</ul>
</div>
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