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-<H1>curs_refresh 3x</H1>
-<HR>
+<H1 class="no-header">curs_refresh 3x</H1>
<PRE>
-<!-- Manpage converted by man2html 3.0.1 -->
-<STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG> <STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG>
+<STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG> <STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG>
-</PRE>
-<H2>NAME</H2><PRE>
- <STRONG>doupdate</STRONG>, <STRONG>redrawwin</STRONG>, <STRONG>refresh</STRONG>, <STRONG>wnoutrefresh</STRONG>, <STRONG>wredrawln</STRONG>,
+</PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
+ <STRONG>doupdate</STRONG>, <STRONG>redrawwin</STRONG>, <STRONG>refresh</STRONG>, <STRONG>wnoutrefresh</STRONG>, <STRONG>wredrawln</STRONG>,
<STRONG>wrefresh</STRONG> - refresh <STRONG>curses</STRONG> windows and lines
-</PRE>
-<H2>SYNOPSIS</H2><PRE>
+</PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
<STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
<STRONG>int</STRONG> <STRONG>refresh(void);</STRONG>
<STRONG>int</STRONG> <STRONG>wredrawln(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>beg_line,</STRONG> <STRONG>int</STRONG> <STRONG>num_lines);</STRONG>
-</PRE>
-<H2>DESCRIPTION</H2><PRE>
+</PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
+
+</PRE><H3><a name="h3-refresh_wrefresh">refresh/wrefresh</a></H3><PRE>
The <STRONG>refresh</STRONG> and <STRONG>wrefresh</STRONG> routines (or <STRONG>wnoutrefresh</STRONG> and
<STRONG>doupdate</STRONG>) must be called to get actual output to the ter-
minal, as other routines merely manipulate data struc-
minal is left at the location of the cursor for that win-
dow.
- The <STRONG>wnoutrefresh</STRONG> and <STRONG>doupdate</STRONG> routines allow multiple
- updates with more efficiency than <STRONG>wrefresh</STRONG> alone. In
- addition to all the window structures, <STRONG>curses</STRONG> keeps two
- data structures representing the terminal screen: a physi-
- cal screen, describing what is actually on the screen, and
- a virtual screen, describing what the programmer wants to
+
+</PRE><H3><a name="h3-wnoutrefresh_doupdate">wnoutrefresh/doupdate</a></H3><PRE>
+ The <STRONG>wnoutrefresh</STRONG> and <STRONG>doupdate</STRONG> routines allow multiple up-
+ dates with more efficiency than <STRONG>wrefresh</STRONG> alone. In addi-
+ tion to all the window structures, <STRONG>curses</STRONG> keeps two data
+ structures representing the terminal screen: a physical
+ screen, describing what is actually on the screen, and a
+ virtual screen, describing what the programmer wants to
have on the screen.
The routine <STRONG>wrefresh</STRONG> works by first calling <STRONG>wnoutrefresh</STRONG>,
which copies the named window to the virtual screen, and
then calling <STRONG>doupdate</STRONG>, which compares the virtual screen
to the physical screen and does the actual update. If the
- programmer wishes to output several windows at once, a
- series of calls to <STRONG>wrefresh</STRONG> results in alternating calls
- to <STRONG>wnoutrefresh</STRONG> and <STRONG>doupdate</STRONG>, causing several bursts of
- output to the screen. By first calling <STRONG>wnoutrefresh</STRONG> for
- each window, it is then possible to call <STRONG>doupdate</STRONG> once,
- resulting in only one burst of output, with fewer total
- characters transmitted and less CPU time used. If the <EM>win</EM>
- argument to <STRONG>wrefresh</STRONG> is the global variable <STRONG>curscr</STRONG>, the
- screen is immediately cleared and repainted from scratch.
+ programmer wishes to output several windows at once, a se-
+ ries of calls to <STRONG>wrefresh</STRONG> results in alternating calls to
+ <STRONG>wnoutrefresh</STRONG> and <STRONG>doupdate</STRONG>, causing several bursts of out-
+ put to the screen. By first calling <STRONG>wnoutrefresh</STRONG> for each
+ window, it is then possible to call <STRONG>doupdate</STRONG> once, result-
+ ing in only one burst of output, with fewer total charac-
+ ters transmitted and less CPU time used. If the <EM>win</EM> argu-
+ ment to <STRONG>wrefresh</STRONG> is the global variable <STRONG>curscr</STRONG>, the screen
+ is immediately cleared and repainted from scratch.
The phrase "copies the named window to the virtual screen"
- above is ambiguous. What actually happens is that all
- <EM>touched</EM> (changed) lines in the window are copied to the
- virtual screen. This affects programs that use overlap-
- ping windows; it means that if two windows overlap, you
- can refresh them in either order and the overlap region
+ above is ambiguous. What actually happens is that all
+ <EM>touched</EM> (changed) lines in the window are copied to the
+ virtual screen. This affects programs that use overlap-
+ ping windows; it means that if two windows overlap, you
+ can refresh them in either order and the overlap region
will be modified only when it is explicitly changed. (But
- see the section on <STRONG>PORTABILITY</STRONG> below for a warning about
+ see the section on <STRONG>PORTABILITY</STRONG> below for a warning about
exploiting this behavior.)
+
+</PRE><H3><a name="h3-wredrawln_redrawwin">wredrawln/redrawwin</a></H3><PRE>
The <STRONG>wredrawln</STRONG> routine indicates to <STRONG>curses</STRONG> that some screen
- lines are corrupted and should be thrown away before any-
- thing is written over them. It touches the indicated
- lines (marking them changed). The routine <STRONG>redrawwin</STRONG>()
+ lines are corrupted and should be thrown away before any-
+ thing is written over them. It touches the indicated
+ lines (marking them changed). The routine <STRONG>redrawwin</STRONG>
touches the entire window.
-</PRE>
-<H2>RETURN VALUE</H2><PRE>
- Routines that return an integer return <STRONG>ERR</STRONG> upon failure,
- and <STRONG>OK</STRONG> (SVr4 only specifies "an integer value other than
+</PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
+ Routines that return an integer return <STRONG>ERR</STRONG> upon failure,
+ and <STRONG>OK</STRONG> (SVr4 only specifies "an integer value other than
<STRONG>ERR</STRONG>") upon successful completion.
+ X/Open does not define any error conditions. In this im-
+ plementation
-</PRE>
-<H2>NOTES</H2><PRE>
+ <STRONG>wnoutrefresh</STRONG>
+ returns an error if the window pointer is null, or
+ if the window is really a pad.
+
+ <STRONG>wredrawln</STRONG>
+ returns an error if the associated call to <STRONG>touchln</STRONG>
+ returns an error.
+
+
+</PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
Note that <STRONG>refresh</STRONG> and <STRONG>redrawwin</STRONG> may be macros.
-</PRE>
-<H2>PORTABILITY</H2><PRE>
+</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
The XSI Curses standard, Issue 4 describes these func-
tions.
- Whether <STRONG>wnoutrefresh()</STRONG> copies to the virtual screen the
- entire contents of a window or just its changed portions
- has never been well-documented in historic curses versions
+ Whether <STRONG>wnoutrefresh</STRONG> copies to the virtual screen the en-
+ tire contents of a window or just its changed portions has
+ never been well-documented in historic curses versions
(including SVr4). It might be unwise to rely on either
behavior in programs that might have to be linked with
- other curses implementations. Instead, you can do an
- explicit <STRONG>touchwin()</STRONG> before the <STRONG>wnoutrefresh()</STRONG> call to
- guarantee an entire-contents copy anywhere.
+ other curses implementations. Instead, you can do an ex-
+ plicit <STRONG>touchwin</STRONG> before the <STRONG>wnoutrefresh</STRONG> call to guarantee
+ an entire-contents copy anywhere.
-</PRE>
-<H2>SEE ALSO</H2><PRE>
- <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_outopts.3x.html">curs_outopts(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_outopts.3x.html">curs_outopts(3x)</A></STRONG> <STRONG><A HREF="curs_variables.3x.html">curs_variables(3x)</A></STRONG>.
- <STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG>
+
<STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG>
</PRE>
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-<ADDRESS>
-Man(1) output converted with
-<a href="http://www.oac.uci.edu/indiv/ehood/man2html.html">man2html</a>
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+<div class="nav">
+<ul>
+<li><a href="#h2-NAME">NAME</a></li>
+<li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
+<li><a href="#h2-DESCRIPTION">DESCRIPTION</a>
+<ul>
+<li><a href="#h3-refresh_wrefresh">refresh/wrefresh</a></li>
+<li><a href="#h3-wnoutrefresh_doupdate">wnoutrefresh/doupdate</a></li>
+<li><a href="#h3-wredrawln_redrawwin">wredrawln/redrawwin</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-SEE-ALSO">SEE ALSO</a></li>
+</ul>
+</div>
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