On Apr 24, 2014, at 08:20 , Sean McBride <s...@rogue-research.com> wrote:

> Tracking areas are nice, but limited to rects, and I have circular areas to 
> deal with too.

Not really. According to the event handling guide, if a responder's 
cursorUpdate: declines the event (by invoking super), the event passes up the 
responder chain. In effect, you are not forced to provide a cursor for your 
entire tracking area, which sounds like what you want.

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