Magnification cursor

FROM : Dustin Mierau
DATE : Sun Jan 20 23:09:12 2002

Does anyone know how the Magnification cursor is done in the
Cocoa color picker? It actually magnifies what is underneath of
it, it's very cool. I am not looking to put something silly into
my application, I am just curious how it is done. Is there a
cursor api for creating advanced cursors like this? Or, is it a
window that redraws itself as it moves with the cursor.

Anyway, just curious.

Thanks,
-dustin