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curs_get_wstr(3X) curs_get_wstr(3X)
NAME
get_wstr, getn_wstr, wget_wstr, wgetn_wstr, mvget_wstr, mvgetn_wstr, mvwget_wstr,
mvwgetn_wstr - get an array of wide characters from a curses terminal keyboard
SYNOPSIS
#include <curses.h>
int get_wstr(wint_t *wstr);
int getn_wstr(wint_t *wstr, int n);
int wget_wstr(WINDOW *win, wint_t *wstr);
int wgetn_wstr(WINDOW *win, wint_t *wstr, int n);
int mvget_wstr(int y, int x, wint_t *wstr);
int mvgetn_wstr(int y, int x, wint_t *wstr, int n);
int mvwget_wstr(WINDOW *win, int y, int x, wint_t *wstr);
int mvwgetn_wstr(WINDOW *win, int y, int x, wint_t *wstr, int n);
DESCRIPTION
The effect of get_wstr is as though a series of calls to get_wch were made, until a new-
line, other end-of-line, or end-of-file condition is processed. An end-of-file condition
is represented by WEOF, as defined in <wchar.h>. The newline and end-of-line conditions
are represented by the \n wchar_t value. In all instances, the end of the string is ter-
minated by a null wchar_t. The routine places resulting values in the area pointed to by
wstr.
The user's erase and kill characters are interpreted. If keypad mode is on for the win-
dow, KEY_LEFT and KEY_BACKSPACE are both considered equivalent to the user's kill charac-
ter.
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).
The effect of wget_wstr is as though a series of calls to wget_wch were made.
The effect of mvget_wstr is as though a call to move and then a series of calls to get_wch
were made.
The effect of mvwget_wstr is as though a call to wmove and then a series of calls to
wget_wch were made.
The getn_wstr, mvgetn_wstr, mvwgetn_wstr, and wgetn_wstr functions are identical to the
get_wstr, mvget_wstr, mvwget_wstr, and wget_wstr functions, respectively, except that the
*n_* versions read at most n characters, letting the application prevent overflow of the
input buffer.
NOTES
Using get_wstr, mvget_wstr, mvwget_wstr, or wget_wstr to read a line that overflows the
array pointed to by wstr causes undefined results. The use of getn_wstr, mvgetn_wstr,
mvwgetn_wstr, or wgetn_wstr, respectively, is recommended.
These functions cannot return KEY_ values because there is no way to distinguish a KEY_
value from a valid wchar_t value.
All of these routines except wgetn_wstr may be macros.
RETURN VALUE
All of these functions return OK upon successful completion. Otherwise, they return ERR.
Functions using a window parameter return an error if it is null.
wgetn_wstr
returns an error if the associated call to wget_wch failed.
Functions with a "mv" prefix first perform a cursor movement using wmove, and return an
error if the position is outside the window, or if the window pointer is null.
PORTABILITY
These functions are described in The Single Unix Specification, Version 2. No error con-
ditions are defined. This implementation returns ERR if the window pointer is null, or if
the lower-level wget_wch call returns an ERR. In the latter case, an ERR return without
other data is treated as an end-of-file condition, and the returned array contains a WEOF
followed by a null wchar_t.
X/Open curses documents these functions to pass an array of wchar_t, but all of the ven-
dors implement this using wint_t.
SEE ALSO
Functions: curses(3X), curs_get_wch(3X), curs_getstr(3X).
curs_get_wstr(3X)
Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
On Apache
Under GNU General Public License
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