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underscore.c revision 1.1.6.1 
      1 /*	$NetBSD: underscore.c,v 1.1.6.1 2000/01/09 20:43:23 jdc Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1999 Julian. D. Coleman
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. The name of the author may not be used to endorse or promote products
     13  *    derived from this software without specific prior written permission.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     20  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     21  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     22  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     23  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     25  * SUCH DAMAGE.
     26  */
     27 
     28 #include "curses.h"
     29 
     30 /*
     31  * wunderscore
     32  *	Enter underscore mode.
     33  */
     34 int
     35 wunderscore(win)
     36 	WINDOW *win;
     37 {
     38 	/*
     39 	 * If can underscore, set the screen underscore bit.
     40 	 */
     41 	if ((US != NULL && UE != NULL) || UC != NULL) {
     42 #ifdef DEBUG
     43 		__CTRACE("wunderscore\n");
     44 #endif
     45 		win->wattr |= __UNDERSCORE;
     46 	}
     47 	return (1);
     48 }
     49 
     50 /*
     51  * wunderend --
     52  *	Exit underscore mode.
     53  */
     54 int
     55 wunderend(win)
     56 	WINDOW *win;
     57 {
     58 	if (UE != NULL) {
     59 #ifdef DEBUG
     60 		__CTRACE("wunderuend\n");
     61 #endif
     62 		win->wattr &= ~__UNDERSCORE;
     63 	}
     64         return 1;
     65 }
     66