🚀 go-pugleaf

Thanks to many who replied. This is actually the second time I asked,
and I got mostly the same reply:

  initgraph();              /* partial TC code */
  pokeb(0,0x0449,6);
  mouseinit();

The above code, apparently work for some people (with Microsoft Mouse), 
but did not work on my computer.  Finally, I find that the following 
alternative:

  (the above)
  reset mouse range to hercules
  simulate mouse cursor by putimage(...,XOR_PUT)
  mouse button call works.

That is, all mouse call works except no mouse arrow...