getsyx.c

操作系统SunOS 4.1.3版本的源码

/*	Copyright (c) 1984 AT&T	*/
/*	  All Rights Reserved  	*/

/*	THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T	*/
/*	The copyright notice above does not evidence any   	*/
/*	actual or intended publication of such source code.	*/

#ifndef lint
static	char sccsid[] = "@(#)getsyx.c 1.1 92/07/30 SMI"; /* from S5R3.1 1.6 */
#endif

#include	"curses_inc.h"

/*
 * Get the current screen coordinates (y, x).
 *
 * The current screen coordinates are defined as the last place that
 * the cursor was placed by a wnoutrefresh(), pnoutrefresh() or setsyx()
 * call. If leaveok() was true for the last window refreshed, then
 * return (-1, -1) so that setsyx() can reset the leaveok flag.
 *
 * This function is actually called by the macro getsyx(y, x), which is
 * defined in curses.h as:
 *
 * #define getsyx(y, x)	_getsyx(&y, &x)
 *
 * Note that this macro just adds in the '&'. In this way, getsyx()
 * is parallel with the other getyx() routines which don't require
 * ampersands. The reason that this can't all be a macro is that
 * that we need to access SP, which is normally not available in
 * user-level routines.
 */

_getsyx(yp, xp)
int	*yp, *xp;
{
    *yp = _virtscr->_cury - SP->Yabove;
    *xp = _virtscr->_curx;
    return (OK);
}