def set_cursor_image(self, image, clickpoint=(0,0)):
"""replace default mouse cursor with image
Cursor variable is State._cursor, default cursor automatically
hidden.
@param image:a pygame.Surface
@param clickpoint: Usually that's the topleft or topright pixel of the image.
If you're using a crosshair as cursor, the clickpoint would probably
be the center.
"""
self._cursor = Cursor(image, clickpoint)
self.widgets.append(self._cursor)
self.sprites.add(self._cursor)
pygame.mouse.set_visible(0)
