curs_getyx(3x) — Linux manual page


curs_getyx(3X)                                            curs_getyx(3X)

NAME         top

       getyx, getparyx, getbegyx, getmaxyx - get curses cursor and
       window coordinates

SYNOPSIS         top

       #include <curses.h>

       void getyx(WINDOW *win, int y, int x);
       void getparyx(WINDOW *win, int y, int x);
       void getbegyx(WINDOW *win, int y, int x);
       void getmaxyx(WINDOW *win, int y, int x);

DESCRIPTION         top

       The getyx macro places the current cursor position of the given
       window in the two integer variables y and x.

       If win is a subwindow, the getparyx macro places the beginning
       coordinates of the subwindow relative to the parent window into
       two integer variables y and x.  Otherwise, -1 is placed into y
       and x.

       Like getyx, the getbegyx and getmaxyx macros store the current
       beginning coordinates and size of the specified window.

RETURN VALUE         top

       The return values of these macros are undefined (i.e., they
       should not be used as the right-hand side of assignment

NOTES         top

       All of these interfaces are macros.  A "&" is not necessary
       before the variables y and x.

PORTABILITY         top

       The getyx, getparyx, getbegyx and getmaxyx macros are described
       in the XSI Curses standard, Issue 4.

       This implementation also provides functions getbegx, getbegy,
       getcurx, getcury, getmaxx, getmaxy, getparx and getpary for
       compatibility with older versions of curses.

       Although X/Open Curses does not address this, many
       implementations provide members of the WINDOW structure
       containing values corresponding to these macros.  For best
       portability, do not rely on using the data in WINDOW, since some
       implementations make WINDOW opaque (do not allow direct use of
       its members).

       Besides the problem of opaque structures, the data stored in
       like-named members may not have like-values in different
       implementations.  For example, the WINDOW._maxx and WINDOW._maxy
       values in ncurses have (at least since release 1.8.1) differed by
       one from some other implementations.  The difference is hidden by
       means of the macro getmaxyx.

SEE ALSO         top

       curses(3X), curs_legacy(3X), curs_opaque(3X)

COLOPHON         top

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