#include <curses.h>

int main () {
  int input;
  MEVENT mouseinput;

  initscr();
  raw (); nodelay(stdscr,1); noecho(); curs_set(0); nonl(); keypad(stdscr,1);
  mousemask (ALL_MOUSE_EVENTS, NULL);

  mvprintw (0,30, "Press q to quit");
  refresh();

  do { // A nasty 100% resource hogging loop, I know. Sorry about that.
    input = wgetch(stdscr);

    if (input == KEY_MOUSE) {
      getmouse (&mouseinput);
      mvprintw (11, 30, "  x = %d  y = %d   ", mouseinput.x, mouseinput.y);
      mvaddch (mouseinput.y, mouseinput.x, 'X');
      refresh ();
    }

  } while (input != 'q');

  endwin ();
}