10-03-2002
If you want to background what I think you want to background, put your while loop inside parentheses and put an ampersand after the closing parenthesis.
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LEARN ABOUT XFREE86
curs_bkgd
curs_bkgd(3CURSES) Curses Library Functions curs_bkgd(3CURSES)
NAME
curs_bkgd, bkgd, bkgdset, wbkgdset, wbkgd - curses window background manipulation routines
SYNOPSIS
cc [ flag ... ] file ... -lcurses [ library ... ]
#include <curses.h>
int bkgd(chtype ch);
void bkgdset(chtype ch);
void wbkgdset(WINDOW *win, chtype ch);
int wbkgd(WINDOW *win, chtype ch);
DESCRIPTION
The bkgdsets() and wbkgdset() routines manipulate the background of the named window. Background is a chtype consisting of any combination
of attributes and a character. The attribute part of the background is combined (ORed) with all non-blank characters that are written into
the window with waddch(). Both the character and attribute parts of the background are combined with the blank characters. The background
becomes a property of the character and moves with the character through any scrolling and insert/delete line/character operations. To the
extent possible on a particular terminal, the attribute part of the background is displayed as the graphic rendition of the character put
on the screen.
The bkgd() and wbkgd() routines combine the new background with every position in the window. Background is any combination of attributes
and a character. Only the attribute part is used to set the background of non-blank characters, while both character and attributes are
used for blank positions. To the extent possible on a particular terminal, the attribute part of the background is displayed as the graphic
rendition of the character put on the screen.
RETURN VALUES
bkgd() and wbkgd() return the integer OK, or a non-negative integer, if immedok() is set. See curs_outopts(3CURSES).
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|MT-Level |Unsafe |
+-----------------------------+-----------------------------+
SEE ALSO
curs_addch(3CURSES), curs_outopts(3CURSES), curses(3CURSES), attributes(5)
NOTES
The header <curses.h> automatically includes the headers <stdio.h> and <unctrl.h>.
Note that bkgdset() and bkgd() may be macros.
SunOS 5.10 31 Dec 1996 curs_bkgd(3CURSES)