ncurses/ncurses/base/lib_hline.c

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/****************************************************************************
 *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
 *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
 ****************************************************************************/

/*
**	lib_hline.c
**
**	The routine whline().
**
*/

#include <curses.priv.h>

MODULE_ID("$Id: lib_hline.c,v 1.13 2010/12/19 01:48:39 tom Exp $")

NCURSES_EXPORT(int)
whline(WINDOW *win, chtype ch, int n)
{
    int code = ERR;
    int start;
    int end;

    T((T_CALLED("whline(%p,%s,%d)"), (void *) win, _tracechtype(ch), n));

    if (win) {
	struct ldat *line = &(win->_line[win->_cury]);
	NCURSES_CH_T wch;

	start = win->_curx;
	end = start + n - 1;
	if (end > win->_maxx)
	    end = win->_maxx;

	CHANGED_RANGE(line, start, end);

	if (ch == 0)
	    SetChar2(wch, ACS_HLINE);
	else
	    SetChar2(wch, ch);
	wch = _nc_render(win, wch);

	while (end >= start) {
	    line->text[end] = wch;
	    end--;
	}

	_nc_synchook(win);
	code = OK;
    }
    returnCode(code);
}