table of contents
bkgrnd(3NCURSES) | bkgrnd(3NCURSES) |
NAME¶
bkgrnd, wbkgrnd, bkgrndset, wbkgrndset, getbkgrnd, wgetbkgrnd - curses window complex background manipulation routinesSYNOPSIS¶
#include <curses.h> int bkgrnd( const cchar_t *wch);DESCRIPTION¶
The bkgrndset and wbkgrndset routines manipulate the background of the named window. The window background is a cchar_t 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 waddch. 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 bkgrnd and wbkgrnd functions set the background property 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 getbkgrnd function returns the given window's current background
character/attribute pair via the wch pointer.