# Sound Functions

    #include <stdio.h>
    #include "graphapp.h"

    App *app;

    void do_it(Control *b)
    {
      beep(app);
    }

    int main(int argc, char *argv[])
    {
      Window *w;
      Control *b;

      app = new_app(argc, argv);
      w = new_window(app, rect(20,20,400,300),
                     "Listen...", STANDARD_WINDOW);
      b = new_button(w, rect(10,10,80,30), "Press", do_it);
      show_window(w);
      main_loop(app);
      return 0;
    }