Is there a way of hiding the mouse pointer in wxcursor_demo.py ?

Hey guys:

Is there a way of hiding the mouse pointer in wxcursor_demo.py ?
I just want to keep cursor and do away with the mouse pointer.
I want to use it for ROI selection over an image, so the mouse pointer gets in the way.

I am so desperate that I even tried SetCursor() knowing it would not work ...

                                                    Daniel