1  /*
      2  *	scroll.h
      3  *
      4  *****************************************************************************
      5  *
      6  *	Scrolling in Text mode ( DOS )
      7  *     	~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      8  *****************************************************************************
      9  *
     10  *     	Author           :  Rajesh _ThE gReAt
     11  *	Built on         :  some time in 2k
     12  *	Last Modified on :  Friday, February 15, 2002, 11:53:36 PM
     13  *
     14  *	Known errors : ---===(none)===---
     15  *
     16  *****************************************************************************
     17  *	DISCLAIMER:
     18  *****************************************************************************
     19  *
     20  *	Programmers may incorporate any or all code into their programs,
     21  *	giving proper credit within the source. Publication of the
     22  *	source routines is permitted so long as proper credit is given
     23  *	to Rajesh _ThE gReAt.
     24  *
     25  *	Copyright (C) 2002, 2003 by Rajesh _ThE gReAt.  You may use this program, or
     26  *	code or tables extracted from it, as desired without restriction.
     27  *	I can not and will not be held responsible for any damage caused from
     28  *	the use of this software.
     29  *
     30  *	Read license.txt from http://www.rajeshgoli.com/license.txt
     31  *	                   or http://www.rajeshgoli.com/license.htm
     32  *	before using / distributing / or any sort of use of my source
     33  *	Also read my disclaimer http://www.rajeshgoli.com/disclaimer.htm
     34  *	
     35  *	YOU AGREE TO BE BOUND BY MY DISCLAIMER AND LICENSE BY IN ANY WAY
     36  *	USING THIS FILE .
     37  *
     38  *****************************************************************************
     39  * This source works with Turbo C 2.0 and Turbo C++ 3.0 and above.
     40  *****************************************************************************
     41  *	Rajesh _ThE gReAt is a synonym of Rajesh Goli
     42  *	Source freely distributable 
     43  *****************************************************************************/
     44  
     45  #ifndef __SCROLL_H
     46  #define __SCROLL_H
     47  #endif
     48  
     49  #ifndef __DOS_H
     50  #include<dos.h>
     51  #endif
     52  
     53  void scrolldown( int  , int  , int  , int  ,int );
     54  void scrollup( int  , int  , int  , int  ,int );
     55  
     56  void scrolldown( int start_row , int start_column , int end_row , int end_column ,int attrb)
     57  {
     58  	union REGS workregs;
     59  
     60  	workregs.h.ah = 7;	/* Service Number */
     61  	workregs.h.al = 1;	/* Number of lines to scroll */
     62  	workregs.h.ch = start_row;
     63  	workregs.h.cl = start_column;
     64  	workregs.h.dh = end_row;
     65  	workregs.h.dl = end_column;
     66  	workregs.h.bh = attrb;	/* Display attribute of blank line
     67  				   created at top */
     68  
     69  	int86(0x10,&workregs,&workregs);
     70  }
     71  
     72  void scrollup( int start_row , int start_column , int end_row , int end_column ,int attrb)
     73  {
     74  	union REGS workregs;
     75  
     76  	workregs.h.ah = 6;	/* Service Number */
     77  	workregs.h.al = 1;	/* Number of lines to scroll */
     78  	workregs.h.ch = start_row;
     79  	workregs.h.cl = start_column;
     80  	workregs.h.dh = end_row;
     81  	workregs.h.dl = end_column;
     82  	workregs.h.bh = attrb;	/* Display attribute of blank line
     83  				   created at top */
     84  
     85  	int86(0x10,&workregs,&workregs);
     86  }
     87