curs_instr(3x) — Linux manual page


curs_instr(3X)                                                curs_instr(3X)

NAME         top

       instr,   innstr,   winstr,   winnstr,  mvinstr,  mvinnstr,  mvwinstr,
       mvwinnstr - get a string of characters from a curses window

SYNOPSIS         top

       #include <curses.h>

       int instr(char *str);
       int innstr(char *str, int n);
       int winstr(WINDOW *win, char *str);
       int winnstr(WINDOW *win, char *str, int n);
       int mvinstr(int y, int x, char *str);
       int mvinnstr(int y, int x, char *str, int n);
       int mvwinstr(WINDOW *win, int y, int x, char *str);
       int mvwinnstr(WINDOW *win, int y, int x, char *str, int n);

DESCRIPTION         top

       These routines return a string of characters in str, extracted
       starting at the current cursor position in the named window.
       Attributes are stripped from the characters.  The four functions with
       n as the last argument return a leading substring at most n
       characters long (exclusive of the trailing NUL).

RETURN VALUE         top

       All of the functions return ERR upon failure, or the number of
       characters actually read into the string.

       X/Open Curses defines no error conditions.  In this implementation:

       ·   If the win parameter is null, an error is returned,

       ·   If the chstr parameter is null, an error is returned,

       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.

NOTES         top

       Note that all routines except winnstr may be macros.

PORTABILITY         top

       SVr4 does not document whether a length limit includes or excludes
       the trailing NUL.

       The ncurses library extends the XSI description by allowing a
       negative value for n.  In this case, the functions return the string
       ending at the right margin.

SEE ALSO         top


COLOPHON         top

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