January 15, 2006 CURSES_BACKGROUND 3

### NAME

curses_background, bkgd, bkgdset, getbkgd, wbkgd, wbkgdset - curses attribute manipulation routines

### LIBRARY

Curses Library (libcurses, -lcurses)

### SYNOPSIS

```int` bkgd(```chtype`)
```int` bkgdset(```chtype`)
```chtype` getbkgd(```WINDOW *`)
```int` wbkgd(```chtype`)
```int` wbkgdset(```chtype`)

### DESCRIPTION

These functions manipulate the background attributes on ```stdscr` or on the specified window.

The function wbkgdset(```win``, ch`) sets the background attributes of the specified window ```win` to ```ch`.

When the background attributes are set on a window, characters are added to the window with the logical OR of the background attributes and the character's attributes. If both the background attribute and the character attribute contain color, the color of the character attribute is rendered. If the background attribute contains a non-space character, then this character is added where the foreground character is a space character.

Note that subwindows created from ```win` inherit the background attributes of ```win`.

The function wbkgd(```win``, ch`) sets the background attributes of the specified window ```win` to ```ch` and also sets the rendition of every character position on that window, as if the characters had been newly added to ```win`. The rendition of characters on subwindows of ```win` is also set to ```ch`.

The functions bkgdset(```ch`) and bkgd(```ch`) are equivalent to wbkgdset(```stdscr``, ch`) and wbkgd(```stdscr``, ch`), respectively.

The function getbkgd(```win`) returns the background attributes for the window ```win`.

### RETURN VALUES

The functions wbkgdset(``) and wbkgd(``) return OK on success and ERR on failure.

### SEE ALSO

curses_attributes(3), curses_color(3), curses_window(3)

### STANDARDS

The NetBSD Curses library complies with the X/Open Curses specification, part of the Single Unix Specification.

### HISTORY

These functions first appeared in NetBSD1.6.