X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=doc%2Fhtml%2Fman%2Fcurs_bkgrnd.3x.html;h=a1ab9247d9b9e8d3c12fbb2cbd8378aa1c36548e;hp=dd761b7acf522d802621cc32057085c0387801f5;hb=84cf9f63bf604413fa5714ef91f83076ac8f236b;hpb=027ae42953e3186daed8f3882da73de48291b606 diff --git a/doc/html/man/curs_bkgrnd.3x.html b/doc/html/man/curs_bkgrnd.3x.html index dd761b7a..a1ab9247 100644 --- a/doc/html/man/curs_bkgrnd.3x.html +++ b/doc/html/man/curs_bkgrnd.3x.html @@ -1,7 +1,7 @@ - +
+ +- -curs_bkgrnd(3x) curs_bkgrnd(3x) +curs_bkgrnd(3x) curs_bkgrnd(3x) --
- bkgrnd, wbkgrnd, bkgrndset, wbkgrndset, getbkgrnd, wget- - bkgrnd - curses window complex background manipulation - routines +
+ bkgrnd, wbkgrnd, bkgrndset, wbkgrndset, getbkgrnd, wgetbkgrnd - curses + window complex background manipulation routines --
+
#include <curses.h> int bkgrnd( const cchar_t *wch); @@ -64,65 +62,89 @@ int wgetbkgrnd(WINDOW *win, cchar_t *wch); --
- The bkgrndset and wbkgrndset routines manipulate the back- - ground 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 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 charac- + ter and moves with the character through any scrolling and + insert/delete line/character operations. - The bkgrnd and wbkgrnd functions set the background prop- - erty of the current or specified window and then apply - this setting to every character position in that window: + 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 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 bkgrnd and wbkgrnd functions set the background property of the + current or specified window and then apply this setting to every char- + acter position in that window: - The getbkgrnd function returns the given window's current - background character/attribute pair via the wch pointer. + o The rendition of every character on the screen is changed to the + new background rendition. + o Wherever the former background character appears, it is changed to + the new background character. --
- Note that bkgrnd, bkgrndset, and getbkgrnd may be macros. +
+ The getbkgrnd function returns the given window's current background + character/attribute pair via the wch pointer. If the given window + pointer is null, the character is not updated (but no error returned). --
- The bkgrndset and wbkgrndset routines do not return a - value. - Upon successful completion, the other functions return OK. - Otherwise, they return ERR. A null window pointer is - treated as an error. +
+ Note that bkgrnd, bkgrndset, and getbkgrnd may be macros. + X/Open Curses does not provide details on how the rendition is changed. + This implementation follows the approach used in SVr4 curses, which is + explained in the manual page for wbkgd. --
+ +
+ The bkgrndset and wbkgrndset routines do not return a value. + + Upon successful completion, the other functions return OK. Otherwise, + they return ERR: + + o A null window pointer is treated as an error. + + o A null character pointer is treated as an error. + + +
+ These functions are described in the XSI Curses standard, Issue 4 + (X/Open Curses). + + +
curses(3x), curs_bkgd(3x) - curs_bkgrnd(3x) + curs_bkgrnd(3x)-