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getstr(3NCURSES) getstr(3NCURSES)
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 over-
flow of the input buffer. Any attempt to enter more characters (other
than the terminating newline or carriage return) causes a beep. Func-
tion keys also cause a beep and are ignored. The getnstr function
reads from the stdscr default window.
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 (typi-
cally a left motion).
RETURN VALUE
All routines return the integer ERR upon failure and an OK (SVr4 speci-
fies only "an integer value other than ERR") upon successful comple-
tion.
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 in-
terrupts the function, it will return KEY_RESIZE rather than OK or ERR.
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 only. 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", with-
out 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).
getstr(3NCURSES)
Man(1) output converted with
man2html and wrapped by fishsponge
This page was generated on Sat Sep 8 16:38:39 GMT 2007
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