diff options
Diffstat (limited to 'ncurses-5.2/doc/html/man/curs_refresh.3x.html')
| -rw-r--r-- | ncurses-5.2/doc/html/man/curs_refresh.3x.html | 134 |
1 files changed, 0 insertions, 134 deletions
diff --git a/ncurses-5.2/doc/html/man/curs_refresh.3x.html b/ncurses-5.2/doc/html/man/curs_refresh.3x.html deleted file mode 100644 index a0c616c..0000000 --- a/ncurses-5.2/doc/html/man/curs_refresh.3x.html +++ /dev/null @@ -1,134 +0,0 @@ -<HTML> -<BODY> -<PRE> -<!-- Manpage converted by man2html 3.0.1 --> - -</PRE> -<H2>NAME</H2><PRE> - <B>refresh</B>, <B>wrefresh</B>, <B>wnoutrefresh</B>, <B>doupdate</B>, <B>redrawwin</B>, <B>wre-</B> - <B>drawln</B> - refresh <B>curses</B> windows and lines - - -</PRE> -<H2>SYNOPSIS</H2><PRE> - <B>#include</B> <B><curses.h></B> - - <B>int</B> <B>refresh(void);</B> - <B>int</B> <B>wrefresh(WINDOW</B> <B>*win);</B> - <B>int</B> <B>wnoutrefresh(WINDOW</B> <B>*win);</B> - <B>int</B> <B>doupdate(void);</B> - <B>int</B> <B>redrawwin(WINDOW</B> <B>*win);</B> - <B>int</B> <B>wredrawln(WINDOW</B> <B>*win,</B> <B>int</B> <B>beg_line,</B> <B>int</B> <B>num_lines);</B> - - -</PRE> -<H2>DESCRIPTION</H2><PRE> - The <B>refresh</B> and <B>wrefresh</B> routines (or <B>wnoutrefresh</B> and - <B>doupdate</B>) must be called to get actual output to the ter- - minal, as other routines merely manipulate data struc- - tures. The routine <B>wrefresh</B> copies the named window to - the physical terminal screen, taking into account what is - already there in order to do optimizations. The <B>refresh</B> - routine is the same, using <B>stdscr</B> as the default window. - Unless <B>leaveok</B> has been enabled, the physical cursor of - the terminal is left at the location of the cursor for - that window. - - The <B>wnoutrefresh</B> and <B>doupdate</B> routines allow multiple - updates with more efficiency than <B>wrefresh</B> alone. In - addition to all the window structures, <B>curses</B> 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 - have on the screen. - - The routine <B>wrefresh</B> works by first calling <B>wnoutrefresh</B>, - which copies the named window to the virtual screen, and - then calling <B>doupdate</B>, 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 <B>wrefresh</B> results in alternating calls - to <B>wnoutrefresh</B> and <B>doupdate</B>, causing several bursts of - output to the screen. By first calling <B>wnoutrefresh</B> for - each window, it is then possible to call <B>doupdate</B> once, - resulting in only one burst of output, with fewer total - characters transmitted and less CPU time used. If the <I>win</I> - argument to <B>wrefresh</B> is the global variable <B>curscr</B>, 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 - <I>touched</I> (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 <B>PORTABILITY</B> below for a warning about - exploiting this behavior.) - - The <B>wredrawln</B> routine indicates to <B>curses</B> 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 <B>redrawwin</B>() - touches the entire window. - - -</PRE> -<H2>RETURN VALUE</H2><PRE> - Routines that return an integer return <B>ERR</B> upon failure, - and <B>OK</B> (SVr4 only specifies "an integer value other than - <B>ERR</B>") upon successful completion. - - -</PRE> -<H2>NOTES</H2><PRE> - Note that <B>refresh</B> and <B>redrawwin</B> may be macros. - - -</PRE> -<H2>PORTABILITY</H2><PRE> - The XSI Curses standard, Issue 4 describes these func- - tions. - - Whether <B>wnoutrefresh()</B> 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 - (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 <B>touchwin()</B> before the <B>wnoutrefresh()</B> call to - guarantee an entire-contents copy anywhere. - - -</PRE> -<H2>SEE ALSO</H2><PRE> - <B><A HREF="ncurses.3x.html">curses(3x)</A></B>, <B><A HREF="curs_outopts.3x.html">curs_outopts(3x)</A></B> - - - - - - - - - - - - - - - - - - - - - -</PRE> -<HR> -<ADDRESS> -Man(1) output converted with -<a href="http://www.oac.uci.edu/indiv/ehood/man2html.html">man2html</a> -</ADDRESS> -</BODY> -</HTML> |