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30 * @Id: curs_bkgrnd.3x,v 1.1 2002/02/23 23:23:42 tom Exp @
34 <TITLE>curs_bkgrnd 3x</TITLE>
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39 <H1>curs_bkgrnd 3x</H1>
42 <!-- Manpage converted by man2html 3.0.1 -->
46 <STRONG>bkgrnd</STRONG>, <STRONG>wbkgrnd</STRONG>, <STRONG>bkgrndset</STRONG>, <STRONG>wbkgrndset</STRONG>, <STRONG>getbkgrnd</STRONG>, <STRONG>wget-</STRONG>
47 <STRONG>bkgrnd</STRONG> - <STRONG>curses</STRONG> window complex background manipulation
52 <H2>SYNOPSIS</H2><PRE>
53 <STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
55 <STRONG>int</STRONG> <STRONG>bkgrnd(</STRONG> <STRONG>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM><STRONG>);</STRONG>
56 <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>
57 <STRONG>void</STRONG> <STRONG>bkgrndset(const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM> <STRONG>);</STRONG>
58 <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>
59 <STRONG>int</STRONG> <STRONG>getbkgrnd(cchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM><STRONG>);</STRONG>
60 <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>
64 <H2>DESCRIPTION</H2><PRE>
65 The <STRONG>bkgrndset</STRONG> and <STRONG>wbkgrndset</STRONG> routines manipulate the back-
66 ground of the named window. The window background is a
67 <STRONG>cchar_t</STRONG> consisting of any combination of attributes (i.e.,
68 rendition) and a complex character. The attribute part of
69 the background is combined (OR'ed) with all non-blank
70 characters that are written into the window with <STRONG>waddch</STRONG>.
71 Both the character and attribute parts of the background
72 are combined with the blank characters. The background
73 becomes a property of the character and moves with the
74 character through any scrolling and insert/delete
75 line/character operations.
77 To the extent possible on a particular terminal, the
78 attribute part of the background is displayed as the
79 graphic rendition of the character put on the screen.
81 The <STRONG>bkgrnd</STRONG> and <STRONG>wbkgrnd</STRONG> functions set the background prop-
82 erty of the current or specified window and then apply
83 this setting to every character position in that window:
85 The rendition of every character on the screen is
86 changed to the new background rendition.
88 Wherever the former background character appears,
89 it is changed to the new background character.
91 The <STRONG>getbkgrnd</STRONG> function returns the given window's current
92 background character/attribute pair via the <STRONG>wch</STRONG> pointer.
98 Note that <STRONG>bkgrnd</STRONG>, <STRONG>bkgrndset</STRONG>, and <STRONG>getbkgrnd</STRONG> may be macros.
102 <H2>RETURN VALUES</H2><PRE>
103 The <STRONG>bkgrndset</STRONG> and <STRONG>wbkgrndset</STRONG> routines do not return a
106 Upon successful completion, the other functions return <STRONG>OK</STRONG>.
107 Otherwise, they return <STRONG>ERR</STRONG>. A null window pointer is
112 <H2>SEE ALSO</H2><PRE>
113 <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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