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<H1>curs_bkgrnd 3x</H1>
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<PRE>
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</PRE>
<H2>NAME</H2><PRE>
<STRONG>bkgrnd</STRONG>, <STRONG>wbkgrnd</STRONG>, <STRONG>bkgrndset</STRONG>, <STRONG>wbkgrndset</STRONG>, <STRONG>getbkgrnd</STRONG>, <STRONG>wget-</STRONG>
<STRONG>bkgrnd</STRONG> - <STRONG>curses</STRONG> window complex background manipulation
routines
</PRE>
<H2>SYNOPSIS</H2><PRE>
<STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
<STRONG>int</STRONG> <STRONG>bkgrnd(</STRONG> <STRONG>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>wbkgrnd(</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM><STRONG>);</STRONG>
<STRONG>void</STRONG> <STRONG>bkgrndset(const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM> <STRONG>);</STRONG>
<STRONG>void</STRONG> <STRONG>wbkgrndset(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>getbkgrnd(cchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>wgetbkgrnd(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM><STRONG>);</STRONG>
</PRE>
<H2>DESCRIPTION</H2><PRE>
The <STRONG>bkgrndset</STRONG> and <STRONG>wbkgrndset</STRONG> routines manipulate the back-
ground of the named window. The window background is a
<STRONG>cchar_t</STRONG> consisting of any combination of attributes (i.e.,
rendition) and a complex character. The attribute part of
the background is combined (OR'ed) with all non-blank
characters that are written into the window with <STRONG>waddch</STRONG>.
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 <STRONG>bkgrnd</STRONG> and <STRONG>wbkgrnd</STRONG> functions set the background prop-
erty of the current or specified window and then apply
this setting to every character position in that window:
The rendition of every character on the screen is
changed to the new background rendition.
Wherever the former background character appears,
it is changed to the new background character.
The <STRONG>getbkgrnd</STRONG> function returns the given window's current
background character/attribute pair via the <STRONG>wch</STRONG> pointer.
</PRE>
<H2>NOTES</H2><PRE>
Note that <STRONG>bkgrnd</STRONG>, <STRONG>bkgrndset</STRONG>, and <STRONG>getbkgrnd</STRONG> may be macros.
</PRE>
<H2>RETURN VALUES</H2><PRE>
The <STRONG>bkgrndset</STRONG> and <STRONG>wbkgrndset</STRONG> routines do not return a
value.
Upon successful completion, the other functions return <STRONG>OK</STRONG>.
Otherwise, they return <STRONG>ERR</STRONG>. A null window pointer is
treated as an error.
</PRE>
<H2>SEE ALSO</H2><PRE>
<STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_bkgd.3x.html">curs_bkgd(3x)</A></STRONG>
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