Repaint the specified window on the terminal screen. The refresh
    function acts on the stdscr window.

    Format

      #include  <curses.h>

      int refresh();

      int wrefresh  (WINDOW *win);

1 - Argument

 win

    A pointer to the window.

2 - Description

    The result of this process is that the portion of the window not
    occluded by subwindows or other windows appears on the terminal
    screen. To see the entire occluded window on the terminal screen,
    call the touchwin function instead of the refresh or wrefresh
    function.

    See also touchwin.

3 - Return Values

    OK                 Indicates success.
    ERR                Indicates an error.