lib/curses/scrreg.c

   1 /****************************************************************/
   2 /* Wsetscrreg() routine of the PCcurses package                 */
   3 /*                                                              */
   4 /****************************************************************/
   5 /* This version of curses is based on ncurses, a curses version */
   6 /* Originally written by Pavel Curtis at Cornell University.    */
   7 /* I have made substantial changes to make it run on IBM PC's,  */
   8 /* And therefore consider myself free to make it public domain. */
   9 /*              Bjorn Larsson (...mcvax!enea!infovax!bl)        */
  10 /****************************************************************/
  11 /* 1.0: Release:                                        870515  */
  12 /****************************************************************/
  13 /* Modified to run under the MINIX operating system by Don Cope */
  14 /* These changes are also released into the public domain.      */
  15 /*                                                      900906  */
  16 /****************************************************************/
  17
  18 #include <curses.h>
  19 #include "curspriv.h"
  20
  21 /****************************************************************/
  22 /* Wsetscrreg() set the scrolling region of window 'win' to in- */
  23 /* Clude all lines between 'top' and 'bottom'.                  */
  24 /****************************************************************/
  25
  26 int wsetscrreg(win, top, bottom)
  27 WINDOW *win;
  28 int top;
  29 int bottom;
  30 {
  31   if ((0 <= top) &&
  32       (top <= win->_cury)
  33       &&
  34       (win->_cury <= bottom)
  35       &&
  36       (bottom <= win->_maxy)
  37         ) {
  38         win->_regtop = top;
  39         win->_regbottom = bottom;
  40         return(OK);
  41   }
  42
  43    /* If */
  44   else
  45         return(ERR);
  46 }                               /* wsetscrreg */
  47
  48 /****************************************************************/
  49 /* Setscrreg() set the scrolling region of stdscr to include    */
  50 /* All lines between 'top' and 'bottom'.                        */
  51 /****************************************************************/
  52
  53 int setscrreg(top, bottom)
  54 int top;
  55 int bottom;
  56 {
  57   return(wsetscrreg(stdscr, top, bottom));
  58 }                               /* setscrreg */