ncurses/lib_insch.c

   1
   2 /***************************************************************************
   3 *                            COPYRIGHT NOTICE                              *
   4 ****************************************************************************
   5 *                ncurses is copyright (C) 1992-1995                        *
   6 *                          Zeyd M. Ben-Halim                               *
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   8 *                          Eric S. Raymond                                 *
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  21
  22
  23
  24 /*
  25 **      lib_insch.c
  26 **
  27 **      The routine winsch().
  28 **
  29 */
  30
  31 #include <curses.priv.h>
  32
  33 MODULE_ID("$Id: lib_insch.c,v 1.7 1997/04/12 17:43:02 tom Exp $")
  34
  35 int  winsch(WINDOW *win, chtype c)
  36 {
  37 chtype  *temp1, *temp2;
  38 chtype  *end;
  39
  40         T((T_CALLED("winsch(%p, %s)"), win, _tracechtype(c)));
  41
  42         end = &win->_line[win->_cury].text[win->_curx];
  43         temp1 = &win->_line[win->_cury].text[win->_maxx];
  44         temp2 = temp1 - 1;
  45
  46         while (temp1 > end)
  47             *temp1-- = *temp2--;
  48
  49         *temp1 = _nc_render(win, c);
  50
  51         win->_line[win->_cury].lastchar = win->_maxx;
  52         if (win->_line[win->_cury].firstchar == _NOCHANGE
  53                                 ||  win->_line[win->_cury].firstchar > win->_curx)
  54             win->_line[win->_cury].firstchar = win->_curx;
  55         returnCode(OK);
  56 }