inch,  winch,  mvinch,  mvwinch - get a character and attributes from a
   curses window


   #include <curses.h>

   chtype inch(void);
   chtype winch(WINDOW *win);
   chtype mvinch(int y, int x);
   chtype mvwinch(WINDOW *win, int y, int x);


   These routines return the character, of type  chtype,  at  the  current
   position  in  the  named  window.   If  any attributes are set for that
   position, their values are OR'ed into the  value  returned.   Constants
   defined  in <curses.h> can be used with the & (logical AND) operator to
   extract the character or attributes alone.

   The following bit-masks may  be  AND-ed  with  characters  returned  by

   A_CHARTEXT     Bit-mask to extract character
   A_ATTRIBUTES   Bit-mask to extract attributes
   A_COLOR        Bit-mask to extract color-pair field information


   Functions  with  a  "mv"  prefix  first perform a cursor movement using
   wmove, and return an error if the position is outside the window, or if
   the window pointer is null.


   Note that all of these routines may be macros.


   These functions are described in the XSI Curses standard, Issue 4.



   Comparable  functions  in  the  wide-character  (ncursesw)  library are
   described in in_wch(3NCURSES).



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