Provided by: ncurses-doc_5.9+20140118-1ubuntu1_all 

NAME
getstr, getnstr, wgetstr, wgetnstr, mvgetstr, mvgetnstr, mvwgetstr, mvwgetnstr - accept character strings
from curses terminal keyboard
SYNOPSIS
#include <curses.h>
int getstr(char *str);
int getnstr(char *str, int n);
int wgetstr(WINDOW *win, char *str);
int wgetnstr(WINDOW *win, char *str, int n);
int mvgetstr(int y, int x, char *str);
int mvwgetstr(WINDOW *win, int y, int x, char *str);
int mvgetnstr(int y, int x, char *str, int n);
int mvwgetnstr(WINDOW *, int y, int x, char *str, int n);
DESCRIPTION
The function getstr is equivalent to a series of calls to getch, until a newline or carriage return is
received (the terminating character is not included in the returned string). The resulting value is
placed in the area pointed to by the character pointer str.
wgetnstr reads at most n characters, thus preventing a possible overflow of the input buffer. Any at‐
tempt to enter more characters (other than the terminating newline or carriage return) causes a beep.
Function keys also cause a beep and are ignored. The getnstr function reads from the stdscr default win‐
dow.
The user's erase and kill characters are interpreted. If keypad mode is on for the window, KEY_LEFT and
KEY_BACKSPACE are both considered equivalent to the user's kill character.
Characters input are echoed only if echo is currently on. In that case, backspace is echoed as deletion
of the previous character (typically a left motion).
RETURN VALUE
All routines return the integer ERR upon failure and an OK (SVr4 specifies only "an integer value other
than ERR") upon successful completion.
X/Open defines no error conditions.
In this implementation, these functions return an error if the window pointer is null, or if its timeout
expires without having any data.
This implementation provides an extension as well. If a SIGWINCH interrupts the function, it will return
KEY_RESIZE rather than OK or ERR.
Functions with a "mv" prefix first perform a cursor movement using wmove, and return an error if the po‐
sition is outside the window, or if the window pointer is null.
NOTES
Note that getstr, mvgetstr, and mvwgetstr may be macros.
PORTABILITY
These functions are described in the XSI Curses standard, Issue 4. They read single-byte characters on‐
ly. The standard does not define any error conditions. This implementation returns ERR if the window
pointer is null, or if the lower-level wgetch call returns an ERR.
SVr3 and early SVr4 curses implementations did not reject function keys; the SVr4.0 documentation claimed
that "special keys" (such as function keys, "home" key, "clear" key, etc.) are "interpreted", without
giving details. It lied. In fact, the `character' value appended to the string by those implementations
was predictable but not useful (being, in fact, the low-order eight bits of the key's KEY_ value).
The functions getnstr, mvgetnstr, and mvwgetnstr were present but not documented in SVr4.
SEE ALSO
ncurses(3NCURSES), getch(3NCURSES), curses_variables(3NCURSES).
getstr(3NCURSES)