[pygame] mouse.set_pos(mouse.get_pos())?

[Michael George <mdgeorge@xxxxxxxxxxxxxx>]

Hello,

I'm trying to make a animation which may involve moving the window 
around, but I want to keep the mouse in the same "virtual" place.  I've 
got the following snippet:

       xoff = (xres - xpos) / 2
       yoff = (yres - ypos) / 2
       x, y = pygame.mouse.get_pos()
       x    += xoff; y    += yoff
       xpos += xoff; ypos += yoff
       pygame.mouse.set_pos((x,y))

I expected this to move the mouse along with the animation (which it 
does), but it also keeps the mouse pegged at it's original position.  In 
other words, when I move the mouse it springs immediately back to where 
it was - get_pos() doesn't seem to reflect the fact that the mouse has 
moved.  If I remove the call to set_pos and print the value of get_pos 
then it changes, but if I add the call to set_pos back in, the value 
stays fixed when xoff = yoff = 0

Any thoughts?

--Mike