[impersonalis]

* Blitz3D still can't survive desktop rez-mode change in windowed mode. However,
the new GraphicsLost() command can be used to detect this. The only thing you'll be
able to do after GraphicsLost() returns True is EndGraphics() (and then perhaps reload everything
back in if you can be arsed). Or, as I'd be inclined to do, just exit, eg:

...
If GraphicsLost() RuntimeError "Please restart Defender"
RenderWorld
...

Also added 2 new windowed graphics modes: 6 and 7. These are similar to modes 2 and 3, but will
auto-suspend the application when it loses activation. These new modes are highly recommended!

http://blitzbasic.com/Community/posts.php?topic=71312