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curs_getstr 3x



curs_getstr(3x)                                         curs_getstr(3x)




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 point-
       ed to by the character pointer str.

       wgetnstr  reads  at  most  n characters, thus preventing a
       possible overflow of the input buffer.  Any attempt to en-
       ter 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 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  pre-
       vious 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_RE-
       SIZE rather than OK or ERR.

       Functions  with a "mv" prefix first perform a cursor move-
       ment using wmove, and return an error if the  position  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  only.   The
       standard  does  not define any error conditions.  This im-
       plementation 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 "spe-
       cial  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

       curses(3x), curs_getch(3x), curs_variables(3x).



                                                        curs_getstr(3x)

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