Blame - doc/html/man/curs_bkgd.3x.html - android_external_libncurses

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<PRE>

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bkgdset, wbkgdset, bkgd, wbkgd, getbkgd - curses window

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background manipulation routines

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<H2>SYNOPSIS</H2><PRE>

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#include <curses.h>

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void bkgdset(chtype ch);

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void wbkgdset(WINDOW *win, chtype ch);

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int bkgd(chtype ch);

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int wbkgd(WINDOW *win, chtype ch);

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chtype getbkgd(WINDOW *win);

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<H2>DESCRIPTION</H2><PRE>

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The bkgdset and wbkgdset routines manipulate the back-

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ground of the named window. The window background is a

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chtype consisting of any combination of attributes (i.e.,

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rendition) and a character. The attribute part of the

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background is combined (OR'ed) with all non-blank charac-

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ters that are written into the window with waddch. Both

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the character and attribute parts of the background are

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combined with the blank characters. The background

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becomes a property of the character and moves with the

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character through any scrolling and insert/delete

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line/character operations.

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To the extent possible on a particular terminal, the

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attribute part of the background is displayed as the

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graphic rendition of the character put on the screen.

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The bkgd and wbkgd functions set the background property

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of the current or specified window and then apply this

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setting to every character position in that window:

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The rendition of every character on the screen is

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changed to the new background rendition.

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Wherever the former background character appears,

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it is changed to the new background character.

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The getbkgd function returns the given window's current

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background character/attribute pair.

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<H2>RETURN VALUE</H2><PRE>

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The routines bkgd and wbkgd return the integer OK. The

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SVr4.0 manual says "or a non-negative integer if immedok

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is set", but this appears to be an error.

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<H2>NOTES</H2><PRE>

Note that bkgdset and bkgd may be macros.

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<H2>PORTABILITY</H2><PRE>

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These functions are described in the XSI Curses standard,

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Issue 4. It specifies that bkgd and wbkgd return ERR on

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failure. but gives no failure conditions.

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<A HREF="ncurses.3x.html">curses(3x)</A>, <A HREF="curs_addch.3x.html">curs_addch(3x)</A>, <A HREF="curs_attr.3x.html">curs_attr(3x)</A>, curs_out-

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