curs_add_wchstr(3x) Library calls curs_add_wchstr(3x)
add_wchstr, add_wchnstr, wadd_wchstr, wadd_wchnstr, mvadd_wchstr,
mvadd_wchnstr, mvwadd_wchstr, mvwadd_wchnstr - add a curses complex
character string to a window
#include <curses.h>
int add_wchstr(const cchar_t *wchstr);
int add_wchnstr(const cchar_t *wchstr, int n);
int wadd_wchstr(WINDOW * win, const cchar_t *wchstr);
int wadd_wchnstr(WINDOW * win, const cchar_t *wchstr, int n);
int mvadd_wchstr(int y, int x, const cchar_t *wchstr);
int mvadd_wchnstr(int y, int x, const cchar_t *wchstr, int n);
int mvwadd_wchstr(WINDOW *win, int y, int x, const cchar_t *wchstr);
int mvwadd_wchnstr(WINDOW *win, int y, int x, const cchar_t *wchstr, int n);
These functions copy the (null-terminated) array of complex characters
wchstr into the window image structure starting at the current cursor
position. The four functions with n as the last argument copy at most
n elements, but no more than will fit on the line. If n=-1 then the
whole array is copied, to the maximum number of characters that will
fit on the line.
The window cursor is not advanced. These functions work faster than
waddnstr. On the other hand:
o they do not perform checking (such as for the newline, backspace,
or carriage return characters),
o they do not advance the current cursor position,
o they do not expand other control characters to ^-escapes, and
o they truncate the string if it crosses the right margin, rather
than wrapping it around to the new line.
These functions end successfully on encountering a null cchar_t, or
when they have filled the current line. If a complex character cannot
completely fit at the end of the current line, the remaining columns
are filled with the background character and rendition.
All functions return the integer ERR upon failure and OK on success.
X/Open does not define any error conditions. This implementation
returns an error if the window pointer is null.
Functions with a "mv" prefix first perform a cursor movement using
wmove, and return an error if the position is outside the window, or if
the window pointer is null.
All functions except wadd_wchnstr may be macros.
These entry points are described in the XSI Curses standard, Issue 4.
curses(3x), curs_addwstr(3x)
Comparable functions in the narrow-character (ncurses) library are
described in curs_addchstr(3x).
ncurses 6.4 2023-10-07 curs_add_wchstr(3x)