[pygame] Minimizing hardware-accelerated application

["Heikki Salo" <heikki_salo@sci.fi>]

I am making a little test program with pygame and I have noticed all the
problems using hardware-acceleration. However, in my game using hardware
significantly improves the performance so I would at least to keep it as an
option.

Here is where my problem occurs. When iconizing the application (in HW-mode)
the pygame crashes and says that "pygame.error: Surface was lost". I believe
that this is the normal behaviour and when losing/gaining focus the program
should reaquire the old mode somehow. I have managed to use ACTIVEEVENT and
"pygame.display.toggle_fullscreen()" so that it is ok to iconize the
application, but when toggling back to fullscreen the program crashes with
that surface lost-error. What is the "normal" thing to do in order to
prevent those crashes? Any example would be nice.