doc/html/man/curs_bkgd.3x.html

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  41 <H1>curs_bkgd 3x</H1>
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  43 <PRE>
  44 <STRONG><A HREF="curs_bkgd.3x.html">curs_bkgd(3x)</A></STRONG>                                             <STRONG><A HREF="curs_bkgd.3x.html">curs_bkgd(3x)</A></STRONG>
  45
  46
  47
  48
  49 </PRE>
  50 <H2><a name="h2-NAME">NAME</a></H2><PRE>
  51        <STRONG>bkgdset</STRONG>,  <STRONG>wbkgdset</STRONG>,  <STRONG>bkgd</STRONG>,  <STRONG>wbkgd</STRONG>, <STRONG>getbkgd</STRONG> - <STRONG>curses</STRONG> window
  52        background manipulation routines
  53
  54
  55 </PRE>
  56 <H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
  57        <STRONG>#include</STRONG> <STRONG>&lt;curses.h&gt;</STRONG>
  58
  59        <STRONG>void</STRONG> <STRONG>bkgdset(chtype</STRONG> <STRONG>ch);</STRONG>
  60        <STRONG>void</STRONG> <STRONG>wbkgdset(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>chtype</STRONG> <STRONG>ch);</STRONG>
  61        <STRONG>int</STRONG> <STRONG>bkgd(chtype</STRONG> <STRONG>ch);</STRONG>
  62        <STRONG>int</STRONG> <STRONG>wbkgd(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>chtype</STRONG> <STRONG>ch);</STRONG>
  63        <STRONG>chtype</STRONG> <STRONG>getbkgd(WINDOW</STRONG> <STRONG>*win);</STRONG>
  64
  65
  66 </PRE>
  67 <H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
  68        The <STRONG>bkgdset</STRONG> and <STRONG>wbkgdset</STRONG>  routines  manipulate  the  back-
  69        ground  of  the  named window.  The window background is a
  70        <STRONG>chtype</STRONG> consisting of any combination of attributes  (i.e.,
  71        rendition)  and  a  character.   The attribute part of the
  72        background is combined (OR'ed) with all non-blank  charac-
  73        ters  that  are written into the window with <STRONG>waddch</STRONG>.  Both
  74        the character and attribute parts of  the  background  are
  75        combined   with  the  blank  characters.   The  background
  76        becomes a property of the character  and  moves  with  the
  77        character   through   any   scrolling   and  insert/delete
  78        line/character operations.
  79
  80        To the extent  possible  on  a  particular  terminal,  the
  81        attribute  part  of  the  background  is  displayed as the
  82        graphic rendition of the character put on the screen.
  83
  84        The <STRONG>bkgd</STRONG> and <STRONG>wbkgd</STRONG> functions set the  background  property
  85        of  the  current  or  specified window and then apply this
  86        setting to every character position in that window:
  87
  88               The rendition of every character on the  screen  is
  89               changed to the new background rendition.
  90
  91               Wherever  the  former background character appears,
  92               it is changed to the new background character.
  93
  94        The <STRONG>getbkgd</STRONG> function returns the  given  window's  current
  95        background character/attribute pair.
  96
  97
  98 </PRE>
  99 <H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
 100        The  routines  <STRONG>bkgd</STRONG>  and <STRONG>wbkgd</STRONG> return the integer <STRONG>OK</STRONG>.  The
 101        SVr4.0 manual says "or a non-negative integer  if  <STRONG>immedok</STRONG>
 102        is set", but this appears to be an error.
 103
 104
 105 </PRE>
 106 <H2><a name="h2-NOTES">NOTES</a></H2><PRE>
 107        Note that <STRONG>bkgdset</STRONG> and <STRONG>bkgd</STRONG> may be macros.
 108
 109
 110 </PRE>
 111 <H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
 112        These  functions are described in the XSI Curses standard,
 113        Issue 4.  It specifies that <STRONG>bkgd</STRONG> and <STRONG>wbkgd</STRONG> return  <STRONG>ERR</STRONG>  on
 114        failure, but gives no failure conditions.
 115
 116
 117 </PRE>
 118 <H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
 119        <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>,   <STRONG><A HREF="curs_addch.3x.html">curs_addch(3x)</A></STRONG>,   <STRONG><A HREF="curs_attr.3x.html">curs_attr(3x)</A></STRONG>,   <STRONG>curs_out-</STRONG>
 120        <STRONG><A HREF="curs_outopts.3x.html">opts(3x)</A></STRONG>
 121
 122
 123
 124                                                           <STRONG><A HREF="curs_bkgd.3x.html">curs_bkgd(3x)</A></STRONG>
 125 </PRE>
 126 <div class="nav">
 127 <ul>
 128 <li><a href="#h2-NAME">NAME</a></li>
 129 <li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
 130 <li><a href="#h2-DESCRIPTION">DESCRIPTION</a></li>
 131 <li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
 132 <li><a href="#h2-NOTES">NOTES</a></li>
 133 <li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
 134 <li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
 135 </ul>
 136 </div>
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