CURSES_INCH(3) BSD Library Functions Manual CURSES_INCH(3)NAME
curses_inch, inch, winch, inchnstr, mvinchnstr, winchnstr, mvwinchnstr,
inchstr, mvinchstr, winchstr, mvwinchstr, innstr, winnstr, mvinnstr,
mvwinnstr, instr, winstr mvinstr, mvwinstr — curses read screen contents
routines
LIBRARY
Curses Library (libcurses, -lcurses)
SYNOPSIS
#include <curses.h>
chtype
inch(void);
chtype
winch(WINDOW *win);
int
inchnstr(chtype *chars, int n);
int
mvinchnstr(int y, int x, chtype *chstr, int n);
int
winchnstr(WINDOW *win, chtype *chars, int n);
int
mvwinchnstr(WINDOW *win, int y, int x, chtype *chstr, int n);
int
inchstr(chtype *chars);
int
mvinchstr(int y, int x, chtype *chstr);
int
winchstr(WINDOW *win, chtype *chars);
int
mvwinchstr WINDOW *win int y int x chtype *chstr
int
innstr(char *str, int n);
int
winnstr(WINDOW *win, char *str, int n);
int
mvinnstr(int y, int x, char *str, int n);
int
mvwinnstr(WINDOW *win, int y, int x, char *str, int n);
int
instr(char *str);
int
winstr(WINDOW *win, char *str);
int
mvinstr(int y, int x, char *str);
int
mvwinstr(WINDOW *win, int y, int x, char *str);
DESCRIPTION
These functions read the contents of stdscr or of the specified window.
The inch() function returns the character that is displayed on stdscr at
the current cursor position.
The winch() function is the same as the inch() function, excepting that
the character is read from window specified by win.
The inchnstr() function fills an array of chtype with characters read
from stdscr, the characters are read starting from the current cursor
position and continuing until either n - 1 characters are read or the
right hand side of the screen is reached. The resulting character array
will be NULL terminated.
The winchnstr() function is the same as inchnstr() excepting that the
characters are read from the window specified by win.
The inchstr() and winchstr() functions are the same as the inchnstr() and
winchnstr() functions, respectively, excepting that they do not limit the
number of characters read. The characters returned are those from the
current starting position to the right hand side of the screen. The use
of inchstr() and winchstr() is not recommended as the character buffer
can be overflowed.
The innstr() function is similar to the inchstr() function, excepting
that the array of characters returned is stripped of all the curses
attributes making it a plain character string.
The mvinchstr(), mvinchnstr(), mvwinchstr(), and mvwinchnstr() functions
are the same as the inchstr(), inchnstr(), winchstr(), and winchstr()
functions, respectively, except that wmove() is called to move the cursor
to the position specified by y, x before the output is printed on the
window. Likewise, the mvinstr(), mvinnstr(), mvwinstr(), and mvwinnstr()
functions are the same as the instr(), innstr(), winstr(), and winstr()
functions, respectively, except that wmove() is called to move the cursor
to the position specified by y, x before the output is printed on the
window.
The winnstr() function is the same as the innstr() function, excepting
that characters are read from the window specified by win.
The instr() and winstr() functions are the same as the innstr() and
winnstr() functions, respectively, excepting that there are no limits
placed on the size of the returned string, which may cause buffer over‐
flows. For this reason, the use of instr() and winstr() is not recom‐
mended.
RETURN VALUES
If the calls innstr(), mvinnstr(), mvwinnstr(), and winnstr() succeed
then they will return the number of characters actually read. Functions
returning pointers will return NULL if an error is detected. The func‐
tions that return an int will return one of the following values:
OK The function completed successfully.
ERR An error occurred in the function.
SEE ALSOcurses_addch(3), curses_addstr(3), curses_attributes(3),
curses_insertch(3)STANDARDS
The NetBSD Curses library complies with the X/Open Curses specification,
part of the Single Unix Specification.
NOTES
The inchnstr() and innstr() function read at most n - 1 characters from
the screen so as to leave room for NULL termination. The X/Open specifi‐
cation is unclear as to whether or not this is the correct behaviour.
HISTORY
The Curses package appeared in 4.0BSD.
BSD August 7, 2011 BSD
