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- * @Id: curs_util.3x,v 1.90 2023/12/02 21:10:36 tom Exp @
+ * @Id: curs_util.3x,v 1.91 2023/12/16 20:32:22 tom Exp @
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-<H1 class="no-header">curs_util 3x 2023-12-02 ncurses 6.4 Library calls</H1>
+<H1 class="no-header">curs_util 3x 2023-12-16 ncurses 6.4 Library calls</H1>
<PRE>
<STRONG><A HREF="curs_util.3x.html">curs_util(3x)</A></STRONG> Library calls <STRONG><A HREF="curs_util.3x.html">curs_util(3x)</A></STRONG>
<STRONG>o</STRONG> Then it asks for the screen size via operating system calls. If
successful, it overrides the values from the terminal database.
- <STRONG>o</STRONG> Finally (unless <STRONG>use_env</STRONG> was called with <STRONG>FALSE</STRONG> parameter), <STRONG>ncurses</STRONG>
+ <STRONG>o</STRONG> Finally (unless <STRONG>use_env</STRONG> was called with <STRONG>FALSE</STRONG> parameter), <EM>ncurses</EM>
examines the <EM>LINES</EM> or <EM>COLUMNS</EM> environment variables, using a value
in those to override the results from the operating system or
terminal database.
- <STRONG>Ncurses</STRONG> also updates the screen size in response to <STRONG>SIGWINCH</STRONG>,
- unless overridden by the <EM>LINES</EM> or <EM>COLUMNS</EM> environment variables,
+ <EM>curses</EM> also updates the screen size in response to <STRONG>SIGWINCH</STRONG>, unless
+ overridden by the <EM>LINES</EM> or <EM>COLUMNS</EM> environment variables,
</PRE><H3><a name="h3-use_tioctl">use_tioctl</a></H3><PRE>
The <STRONG>use_tioctl</STRONG> routine, if used, should be called before <STRONG>initscr</STRONG> or
<STRONG>newterm</STRONG> are called (because those compute the screen size). After
- <STRONG>use_tioctl</STRONG> is called with <STRONG>TRUE</STRONG> as an argument, <STRONG>ncurses</STRONG> modifies the
+ <STRONG>use_tioctl</STRONG> is called with <STRONG>TRUE</STRONG> as an argument, <EM>ncurses</EM> modifies the
last step in its computation of screen size as follows:
<STRONG>o</STRONG> checks if the <EM>LINES</EM> and <EM>COLUMNS</EM> environment variables are set to a
number greater than zero.
- <STRONG>o</STRONG> for each, <STRONG>ncurses</STRONG> updates the corresponding environment variable
+ <STRONG>o</STRONG> for each, <EM>ncurses</EM> updates the corresponding environment variable
with the value that it has obtained via operating system call or
from the terminal database.
- <STRONG>o</STRONG> <STRONG>ncurses</STRONG> re-fetches the value of the environment variables so that
+ <STRONG>o</STRONG> <EM>ncurses</EM> re-fetches the value of the environment variables so that
it is still the environment variables which set the screen size.
The <STRONG>use_env</STRONG> and <STRONG>use_tioctl</STRONG> routines combine as follows.
<STRONG>o</STRONG> the data written is a copy of the <STRONG>WINDOW</STRONG> structure, and its
associated character cells. The format differs between the wide-
- character (<STRONG>ncursesw</STRONG>) and non-wide (<STRONG>ncurses</STRONG>) libraries. You can
+ character (<EM>ncursesw</EM>) and non-wide (<EM>ncurses</EM>) libraries. You can
transfer data between the two, however.
<STRONG>o</STRONG> the retrieved window is always created as a top-level window (or
</PRE><H3><a name="h3-nofilter_use_tioctl">nofilter/use_tioctl</a></H3><PRE>
- The <STRONG>nofilter</STRONG> and <STRONG>use_tioctl</STRONG> routines are specific to <STRONG>ncurses</STRONG>. They
+ The <STRONG>nofilter</STRONG> and <STRONG>use_tioctl</STRONG> routines are specific to <EM>ncurses</EM>. They
were not supported on Version 7, BSD or System V implementations. It
- is recommended that any code depending on <STRONG>ncurses</STRONG> extensions be
+ is recommended that any code depending on <EM>ncurses</EM> extensions be
conditioned using <STRONG>NCURSES_VERSION</STRONG>.
<STRONG>o</STRONG> Most implementations simply dump the binary <STRONG>WINDOW</STRONG> structure to the
file. These include SVr4 curses, NetBSD and PDCurses, as well as
- older <STRONG>ncurses</STRONG> versions. This implementation (as well as the X/Open
+ older <EM>ncurses</EM> versions. This implementation (as well as the X/Open
variant of Solaris curses, dated 1995) uses textual dumps.
The implementations which use binary dumps use block-I/O (the
before initializing curses), this implementation returns strings
"M-^@", "M-^A", etc.
- X/Open Curses documents <STRONG>unctrl</STRONG> as declared in <STRONG><unctrl.h></STRONG>, which <STRONG>ncurses</STRONG>
- does. However, <STRONG>ncurses</STRONG>' <STRONG><curses.h></STRONG> includes <STRONG><unctrl.h></STRONG>, matching the
+ X/Open Curses documents <STRONG>unctrl</STRONG> as declared in <STRONG><unctrl.h></STRONG>, which <EM>ncurses</EM>
+ does. However, <EM>ncurses</EM>' <STRONG><curses.h></STRONG> includes <STRONG><unctrl.h></STRONG>, matching the
behavior of SVr4 curses. Other implementations may not do that.
</PRE><H3><a name="h3-use_env_use_tioctl">use_env/use_tioctl</a></H3><PRE>
- If <STRONG>ncurses</STRONG> is configured to provide the sp-functions extension, the
+ If <EM>ncurses</EM> is configured to provide the sp-functions extension, the
state of <STRONG>use_env</STRONG> and <STRONG>use_tioctl</STRONG> may be updated before creating each
<EM>screen</EM> rather than once only (<STRONG><A HREF="curs_sp_funcs.3x.html">curs_sp_funcs(3x)</A></STRONG>). This feature of
<STRONG>use_env</STRONG> is not provided by other implementations of curses.
-ncurses 6.4 2023-12-
02 <STRONG><A HREF="curs_util.3x.html">curs_util(3x)</A></STRONG>
+ncurses 6.4 2023-12-
16 <STRONG><A HREF="curs_util.3x.html">curs_util(3x)</A></STRONG>
</PRE>
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