mvwaddnstr3x
Add a string to a curses window and advance the cursor
Part of curs_addstr(3x).
Overview
waddstr writes the characters of the (null-terminated) string str to the window win, as if by calling waddch(3X) for each char in str. waddnstr is similar, but writes at most n characters. If n is -1, waddnstr writes the entire string. ncurses(3X) describes the variants of these functions.
Return value
These functions return OK on success and ERR on failure.
In ncurses, these functions fail if
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thecurses screen has not been initialized,
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str is a null pointer,
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(for functions taking a WINDOW pointer argument) win is a null pointer,
or
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an internal waddch(3X) call returns ERR.
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 waddnstr may be implemented as macros.
Portability
X/Open Curses Issue 4 describes these functions. It specifies no error conditions for them.
SVr4 describes a successful return value only as “an integer value other than ERR”.