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- * @Id: curs_kernel.3x,v 1.44 2023/09/16 23:37:03 tom Exp @
+ * @Id: curs_kernel.3x,v 1.61 2024/04/20 21:24:19 tom Exp @
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-<H1 class="no-header">curs_kernel 3x 2023-09-16 ncurses 6.4 Library calls</H1>
+<H1 class="no-header">curs_kernel 3x 2024-04-20 ncurses 6.5 Library calls</H1>
<PRE>
<STRONG><A HREF="curs_kernel.3x.html">curs_kernel(3x)</A></STRONG> Library calls <STRONG><A HREF="curs_kernel.3x.html">curs_kernel(3x)</A></STRONG>
routines.
-</PRE><H3><a name="h3-def_prog_mode_
-def_shell_mode">def_prog_mode, def_shell_mode</a></H3><PRE>
+</PRE><H3><a name="h3-def_prog_mode_def_shell_mode">def_prog_mode, def_shell_mode</a></H3><PRE>
The <STRONG>def_prog_mode</STRONG> and <STRONG>def_shell_mode</STRONG> routines save the current terminal
modes as the "program" (in <STRONG>curses</STRONG>) or "shell" (not in <STRONG>curses</STRONG>) state for
use by the <STRONG>reset_prog_mode</STRONG> and <STRONG>reset_shell_mode</STRONG> routines. This is done
context allocated by <STRONG>newterm</STRONG>.
-</PRE><H3><a name="h3-reset_prog_mode_
-reset_shell_mode">reset_prog_mode, reset_shell_mode</a></H3><PRE>
+</PRE><H3><a name="h3-reset_prog_mode_reset_shell_mode">reset_prog_mode, reset_shell_mode</a></H3><PRE>
The <STRONG>reset_prog_mode</STRONG> and <STRONG>reset_shell_mode</STRONG> routines restore the terminal
to "program" (in <STRONG>curses</STRONG>) or "shell" (out of <STRONG>curses</STRONG>) state. These are
done automatically by <STRONG><A HREF="curs_initscr.3x.html">endwin(3x)</A></STRONG> and, after an <STRONG>endwin</STRONG>, by <STRONG>doupdate</STRONG>, so
they normally are not called.
-</PRE><H3><a name="h3-resetty_
-savetty">resetty, savetty</a></H3><PRE>
+</PRE><H3><a name="h3-resetty_savetty">resetty, savetty</a></H3><PRE>
The <STRONG>resetty</STRONG> and <STRONG>savetty</STRONG> routines save and restore the state of the
terminal modes. <STRONG>savetty</STRONG> saves the current state in a buffer and
<STRONG>resetty</STRONG> restores the state to what it was at the last call to <STRONG>savetty</STRONG>.
</PRE><H3><a name="h3-ripoffline">ripoffline</a></H3><PRE>
- The <STRONG>ripoffline</STRONG> routine provides access to the same facility that
- <STRONG>slk_init</STRONG> [see <STRONG><A HREF="curs_slk.3x.html">curs_slk(3x)</A></STRONG>] uses to reduce the size of the screen.
- <STRONG>ripoffline</STRONG> must be called before <STRONG>initscr</STRONG> or <STRONG>newterm</STRONG> is called, to
- prepare these initial actions:
+ <STRONG>ripoffline</STRONG> provides access to the same facility that <STRONG><A HREF="curs_slk.3x.html">slk_init(3x)</A></STRONG> uses
+ to reduce the size of the screen. <STRONG>ripoffline</STRONG> must be called before
+ <STRONG>initscr</STRONG> or <STRONG>newterm</STRONG> is called, to prepare these initial actions:
<STRONG>o</STRONG> If <EM>line</EM> is positive, a line is removed from the top of <STRONG>stdscr</STRONG>.
<STRONG>o</STRONG> if <EM>line</EM> is negative, a line is removed from the bottom.
- When the resulting initialization is done inside <STRONG>initscr</STRONG>, the routine
+ When the resulting initialization is done inside <STRONG>initscr</STRONG>, the routine
<STRONG>init</STRONG> (supplied by the user) is called with two arguments:
<STRONG>o</STRONG> a window pointer to the one-line window that has been allocated and
<STRONG>o</STRONG> an integer with the number of columns in the window.
- Inside this initialization routine, the integer variables <STRONG>LINES</STRONG> and
- <STRONG>COLS</STRONG> (defined in <STRONG><curses.h></STRONG>) are not guaranteed to be accurate and
- <STRONG>wrefresh</STRONG> or <STRONG>doupdate</STRONG> must not be called. It is allowable to call
+ Inside this initialization routine, the integer variables <STRONG>LINES</STRONG> and
+ <STRONG>COLS</STRONG> (defined in <STRONG><curses.h></STRONG>) are not guaranteed to be accurate and
+ <STRONG>wrefresh</STRONG> or <STRONG>doupdate</STRONG> must not be called. It is allowable to call
<STRONG>wnoutrefresh</STRONG> during the initialization routine.
- <STRONG>ripoffline</STRONG> can be called up to five times before calling <STRONG>initscr</STRONG> or
+ <STRONG>ripoffline</STRONG> can be called up to five times before calling <STRONG>initscr</STRONG> or
<STRONG>newterm</STRONG>.
</PRE><H3><a name="h3-curs_set">curs_set</a></H3><PRE>
- The <STRONG>curs_set</STRONG> routine sets the cursor state to invisible, normal, or
- very visible for <STRONG>visibility</STRONG> equal to <STRONG>0</STRONG>, <STRONG>1</STRONG>, or <STRONG>2</STRONG> respectively. If the
- terminal supports the <EM>visibility</EM> requested, the previous <EM>cursor</EM> state
+ The <STRONG>curs_set</STRONG> routine sets the cursor state to invisible, normal, or
+ very visible for <STRONG>visibility</STRONG> equal to <STRONG>0</STRONG>, <STRONG>1</STRONG>, or <STRONG>2</STRONG> respectively. If the
+ terminal supports the <EM>visibility</EM> requested, the previous <EM>cursor</EM> state
is returned; otherwise, <STRONG>ERR</STRONG> is returned.
</PRE><H3><a name="h3-napms">napms</a></H3><PRE>
- The <STRONG>napms</STRONG> routine is used to sleep for <EM>ms</EM> milliseconds.
+ <STRONG>napms</STRONG> sleeps for <EM>ms</EM> milliseconds. If <EM>ms</EM> exceeds 30,000 (thirty
+ seconds), it is capped at that value.
</PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
currently incorrect". This implementation gets it right, but it may be
unwise to count on the correctness of the return value anywhere else.
- Both ncurses and SVr4 will call <STRONG>curs_set</STRONG> in <STRONG>endwin</STRONG> if <STRONG>curs_set</STRONG> has been
+ Both <EM>ncurses</EM> and SVr4 will call <STRONG>curs_set</STRONG> in <STRONG>endwin</STRONG> if <STRONG>curs_set</STRONG> has been
called to make the cursor other than normal, i.e., either invisible or
- very visible. There is no way for ncurses to determine the initial
+ very visible. There is no way for <EM>ncurses</EM> to determine the initial
cursor state to restore that.
</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
- The <EM>virtual</EM> <EM>screen</EM> functions <STRONG>setsyx</STRONG> and <STRONG>getsyx</STRONG> are not described in the
- XSI Curses standard, Issue 4. All other functions are as described in
- XSI Curses.
+ The <EM>virtual</EM> <EM>screen</EM> functions <STRONG>setsyx</STRONG> and <STRONG>getsyx</STRONG> are not described in
+ X/Open Curses, Issue 4. All other functions are as described in X/Open
+ Curses.
The SVr4 documentation describes <STRONG>setsyx</STRONG> and <STRONG>getsyx</STRONG> as having return
type int. This is misleading, as they are macros with no documented
semantics for the return value.
+ If interrupted, <EM>ncurses</EM> restarts <STRONG>napms</STRONG>. That, and the limitation to 30
+ seconds, are different from other implementations.
+
</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_initscr.3x.html">curs_initscr(3x)</A></STRONG>, <STRONG><A HREF="curs_outopts.3x.html">curs_outopts(3x)</A></STRONG>, <STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG>,
- <STRONG><A HREF="curs_scr_dump.3x.html">curs_scr_dump(3x)</A></STRONG>, <STRONG><A HREF="curs_slk.3x.html">curs_slk(3x)</A></STRONG>, <STRONG><A HREF="curs_variables.3x.html">curs_variables(3x)</A></STRONG>.
+ <STRONG><A HREF="curs_scr_dump.3x.html">curs_scr_dump(3x)</A></STRONG>, <STRONG><A HREF="curs_slk.3x.html">curs_slk(3x)</A></STRONG>, <STRONG><A HREF="curs_variables.3x.html">curs_variables(3x)</A></STRONG>
-ncurses 6.
4 2023-09-16 <STRONG><A HREF="curs_kernel.3x.html">curs_kernel(3x)</A></STRONG>
+ncurses 6.
5 2024-04-20 <STRONG><A HREF="curs_kernel.3x.html">curs_kernel(3x)</A></STRONG>
</PRE>
<div class="nav">
<ul>
<li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
<li><a href="#h2-DESCRIPTION">DESCRIPTION</a>
<ul>
-<li><a href="#h3-def_prog_mode_-def_shell_mode">def_prog_mode, def_shell_mode</a></li>
-<li><a href="#h3-reset_prog_mode_-reset_shell_mode">reset_prog_mode, reset_shell_mode</a></li>
-<li><a href="#h3-resetty_-savetty">resetty, savetty</a></li>
+<li><a href="#h3-def_prog_mode_def_shell_mode">def_prog_mode, def_shell_mode</a></li>
+<li><a href="#h3-reset_prog_mode_reset_shell_mode">reset_prog_mode, reset_shell_mode</a></li>
+<li><a href="#h3-resetty_savetty">resetty, savetty</a></li>
<li><a href="#h3-getsyx">getsyx</a></li>
<li><a href="#h3-setsyx">setsyx</a></li>
<li><a href="#h3-ripoffline">ripoffline</a></li>
projects / ncurses.git / blobdiff