.\"***************************************************************************
-.\" Copyright (c) 1998-2005,2010 Free Software Foundation, Inc. *
+.\" Copyright (c) 1998-2010,2016 Free Software Foundation, Inc. *
.\" *
.\" Permission is hereby granted, free of charge, to any person obtaining a *
.\" copy of this software and associated documentation files (the *
.\" authorization. *
.\"***************************************************************************
.\"
-.\" $Id: curs_refresh.3x,v 1.13 2010/07/31 16:10:55 tom Exp $
+.\" $Id: curs_refresh.3x,v 1.17 2016/10/15 16:45:45 tom Exp $
.TH curs_refresh 3X ""
.na
.hy 0
\fBint wredrawln(WINDOW *win, int beg_line, int num_lines);\fR
.br
.SH DESCRIPTION
+.SS refresh/wrefresh
The \fBrefresh\fR and \fBwrefresh\fR routines (or \fBwnoutrefresh\fR and
\fBdoupdate\fR) must be called to get actual output to the terminal, as other
routines merely manipulate data structures.
Unless \fBleaveok\fR has been
enabled, the physical cursor of the terminal is left at the location of the
cursor for that window.
+.SS wnoutrefresh/doupdate
.PP
The \fBwnoutrefresh\fR and \fBdoupdate\fR routines allow multiple updates with
more efficiency than \fBwrefresh\fR alone.
changed.
(But see the section on \fBPORTABILITY\fR below for a warning about
exploiting this behavior.)
+.SS wredrawln/redrawwin
.PP
The \fBwredrawln\fR routine indicates to \fBcurses\fR that some screen lines
are corrupted and should be thrown away before anything is written over them.
It touches the indicated lines (marking them changed).
-The routine \fBredrawwin\fR() touches the entire window.
+The routine \fBredrawwin\fR touches the entire window.
.SH RETURN VALUE
Routines that return an integer return \fBERR\fR upon failure, and \fBOK\fR
(SVr4 only specifies "an integer value other than \fBERR\fR") upon successful
.PP
X/Open does not define any error conditions.
In this implementation
-.RS
+.RS 3
.TP 5
\fBwnoutrefresh\fP
returns an error
.SH PORTABILITY
The XSI Curses standard, Issue 4 describes these functions.
.PP
-Whether \fBwnoutrefresh()\fR copies to the virtual screen the entire contents
+Whether \fBwnoutrefresh\fR 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 \fBtouchwin()\fR before the
-\fBwnoutrefresh()\fR call to guarantee an entire-contents copy anywhere.
+Instead, you can do an explicit \fBtouchwin\fR before the
+\fBwnoutrefresh\fR call to guarantee an entire-contents copy anywhere.
.SH SEE ALSO
-\fBcurses\fR(3X), \fBcurs_outopts\fR(3X)
-.\"#
-.\"# The following sets edit modes for GNU EMACS
-.\"# Local Variables:
-.\"# mode:nroff
-.\"# fill-column:79
-.\"# End:
+\fBcurses\fR(3X),
+\fBcurs_outopts\fR(3X)
+\fBcurs_variables\fR(3X).