Install ncurses as -lcurses and <curses.h>

Install BSD curses library as -locurses and <ocurses.h>

1 files changed, 84 insertions, 0 deletions

diff --git a/lib/libcurses/curs_refresh.3 b/lib/libcurses/curs_refresh.3
new file mode 100644
index 00000000000..77bae2eeb90
--- /dev/null
+++ b/lib/libcurses/curs_refresh.3
@@ -0,0 +1,84 @@
+.TH curs_refresh 3X ""
+.SH NAME
+\fBrefresh\fR, \fBwrefresh\fR, \fBwnoutrefresh\fR,
+\fBdoupdate\fR, \fBredrawwin\fR, \fBwredrawln\fR - refresh
+\fBcurses\fR windows and lines
+.SH SYNOPSIS
+\fB#include <curses.h>\fR
+
+\fBint refresh(void);\fR
+.br
+\fBint wrefresh(WINDOW *win);\fR
+.br
+\fBint wnoutrefresh(WINDOW *win);\fR
+.br
+\fBint doupdate(void);\fR
+.br
+\fBint redrawwin(WINDOW *win);\fR
+.br
+\fBint wredrawln(WINDOW *win, int beg_line, int num_lines);\fR
+.br
+.SH DESCRIPTION
+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.  The routine \fBwrefresh\fR copies
+the named window to the physical terminal screen, taking into account what is
+already there in order to do optimizations.  The \fBrefresh\fR routine is the
+same, using \fBstdscr\fR as the default window.  Unless \fBleaveok\fR has been
+enabled, the physical cursor of the terminal is left at the location of the
+cursor for that window.
+
+The \fBwnoutrefresh\fR and \fBdoupdate\fR routines allow multiple updates with
+more efficiency than \fBwrefresh\fR alone.  In addition to all the window
+structures, \fBcurses\fR 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 \fBwrefresh\fR works by first calling \fBwnoutrefresh\fR, which
+copies the named window to the virtual screen, and then calling \fBdoupdate\fR,
+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 \fBwrefresh\fR results in alternating calls to \fBwnoutrefresh\fR
+and \fBdoupdate\fR, causing several bursts of output to the screen.  By first
+calling \fBwnoutrefresh\fR for each window, it is then possible to call
+\fBdoupdate\fR once, resulting in only one burst of output, with fewer total
+characters transmitted and less CPU time used.  If the \fIwin\fR argument to
+\fBwrefresh\fR is the global variable \fBcurscr\fR, 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 \fItouched\fR (changed) lines in the window
+are copied to the virtual screen.  This affects programs that use overlapping
+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 \fBPORTABILITY\fR below for a warning about
+exploiting this behavior.)
+
+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) then does a refresh
+of the window. The routine \fBredrawwin\fR() touches the entire window and then
+refreshes it.
+.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
+completion.
+.SH NOTES
+Note that \fBrefresh\fR and \fBredrawwin\fR may be macros.
+.SH PORTABILITY
+The XSI Curses standard, Issue 4 describes these functions.
+
+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.
+.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: