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- * @Id: curs_bkgd.3x,v 1.54 2023/12/17 23:31:28 tom Exp @
+ * @Id: curs_bkgd.3x,v 1.61 2024/04/20 18:54:36 tom Exp @
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+<TITLE>curs_bkgd 3x 2024-04-20 ncurses 6.5 Library calls</TITLE>
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-<H1 class="no-header">curs_bkgd 3x 2023-12-17 ncurses 6.4 Library calls</H1>
+<H1 class="no-header">curs_bkgd 3x 2024-04-20 ncurses 6.5 Library calls</H1>
<PRE>
<STRONG><A HREF="curs_bkgd.3x.html">curs_bkgd(3x)</A></STRONG> Library calls <STRONG><A HREF="curs_bkgd.3x.html">curs_bkgd(3x)</A></STRONG>
on the screen.
-</PRE><H3><a name="h3-bkgd_
-wbkgd">bkgd, wbkgd</a></H3><PRE>
+</PRE><H3><a name="h3-bkgd_wbkgd">bkgd, wbkgd</a></H3><PRE>
<STRONG>bkgd</STRONG> and <STRONG>wbkgd</STRONG> set the background property of <STRONG>stdscr</STRONG> or the specified
window and then apply this setting to every character cell in that
window.
character's color attribute.
-</PRE><H3><a name="h3-bkgdset_
-wbkgdset">bkgdset, wbkgdset</a></H3><PRE>
+</PRE><H3><a name="h3-bkgdset_wbkgdset">bkgdset, wbkgdset</a></H3><PRE>
<STRONG>bkgdset</STRONG> and <STRONG>wbkgdset</STRONG> manipulate the background of the applicable
window, without updating the character cells as <STRONG>bkgd</STRONG> and <STRONG>wbkgd</STRONG> do; only
future writes reflect the updated background.
Unusually, there is no <STRONG>wgetbkgd</STRONG> function; <STRONG>getbkgd</STRONG> behaves as one would
expect <STRONG>wgetbkgd</STRONG> to, accepting a <EM>WINDOW</EM> pointer argument.
- <STRONG>bkgd</STRONG> and <STRONG>bkgdset</STRONG> may be available as macros.
+ <STRONG>bkgd</STRONG> and <STRONG>bkgdset</STRONG> may be implemented as macros.
X/Open Curses mentions that the character part of the background must
be a single-byte value. <EM>ncurses</EM>, like SVr4 <EM>curses</EM>, checks to ensure
</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
- X/Open Curses, Issue 4, describes these functions. It specifies that
+ X/Open Curses, Issue 4 describes these functions. It specifies that
<STRONG>bkgd</STRONG>, <STRONG>wbkgd</STRONG>, and <STRONG>getbkgd</STRONG> return <STRONG>ERR</STRONG> on failure (in the case of the
last, this value is cast to <EM>chtype</EM>), but describes no failure
conditions.
Neither X/Open Curses nor the SVr4 manual pages detail how the
rendition of characters on the screen updates when <STRONG>bkgd</STRONG> or <STRONG>wbkgd</STRONG>
- changes the background character. <EM>ncurses,</EM> like SVr4 <EM>curses,</EM> does not
+ changes the background character. <EM>ncurses</EM>, like SVr4 <EM>curses</EM>, does not
(in its non-"wide" configuration) store the background and window
attribute contributions to each character cell separately.
</PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
<STRONG><A HREF="curs_bkgrnd.3x.html">curs_bkgrnd(3x)</A></STRONG> describes the corresponding functions in the "wide"
- configuration of <EM>ncurses.</EM>
+ configuration of <EM>ncurses</EM>.
<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_attr.3x.html">curs_attr(3x)</A></STRONG>
-ncurses 6.
4 2023-12-17 <STRONG><A HREF="curs_bkgd.3x.html">curs_bkgd(3x)</A></STRONG>
+ncurses 6.
5 2024-04-20 <STRONG><A HREF="curs_bkgd.3x.html">curs_bkgd(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-bkgd_-wbkgd">bkgd, wbkgd</a></li>
-<li><a href="#h3-bkgdset_-wbkgdset">bkgdset, wbkgdset</a></li>
+<li><a href="#h3-bkgd_wbkgd">bkgd, wbkgd</a></li>
+<li><a href="#h3-bkgdset_wbkgdset">bkgdset, wbkgdset</a></li>
<li><a href="#h3-getbkgd">getbkgd</a></li>
</ul>
</li>
projects / ncurses.git / blobdiff