NAME¶

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

SYNOPSIS¶

#include <ncursesw/curses.h>

int add_wchstr(const cchar_t *wchstr);
int wadd_wchstr(WINDOW * win, const cchar_t *wchstr);
int mvadd_wchstr(int y, int x, const cchar_t *wchstr);
int mvwadd_wchstr(WINDOW *win, int y, int x, const cchar_t *wchstr);

int add_wchnstr(const cchar_t *wchstr, int n);
int wadd_wchnstr(WINDOW * win, const cchar_t *wchstr, int n);
int mvadd_wchnstr(int y, int x, const cchar_t *wchstr, int n);
int mvwadd_wchnstr(WINDOW *win, int y, int x, const cchar_t *wchstr, int n);

DESCRIPTION¶

wadd_wchstr copies the string of complex characters wchstr to the window win. A null complex character terminates the string. If a complex character does completely fit at the end of the line, curses fills the remaining columns with the window background; see bkgrnd(3NCURSES). wadd_wchnstr does the same, but copies at most n characters, or as many as possible if n is -1. ncurses(3NCURSES) describes the variants of these functions.

Because these functions do not call wadd_wch(3NCURSES) internally, they are faster than waddwstr(3NCURSES) and waddnwstr(3NCURSES). On the other hand, they

• do not treat the backspace, carriage return, or line feed characters specially;
• do not represent unprintable characters with wunctrl(3NCURSES);
• do not update the cursor position to follow the last character written;
• truncate the string at the window's right margin, rather than wrapping it to the next line and potentially scrolling.

RETURN VALUE¶

These functions return OK on success and ERR on failure.

X/Open Curses does not specify any error conditions. ncurses returns ERR if

• win is NULL or
• wchstr is NULL.

Functions prefixed with “mv” first perform cursor movement and fail if the position (y, x) is outside the window boundaries.

NOTES¶

All of these functions except wadd_wchnstr may be implemented as macros.

PORTABILITY¶

X/Open Curses, Issue 4 describes these functions.

SEE ALSO¶

addchstr(3NCURSES) describes comparable functions of the ncurses library in its non-wide-character configuration.

ncurses(3NCURSES), addwstr(3NCURSES), add_wch(3NCURSES)