On Feb 13, 2012, at 1:25 PM, Sean McBride wrote:

> The NSEvent locationInWindow docs say: "For non-mouse events the return value 
> of this method is undefined."
> 
> I've just been bitten by this.  Seems it would be easy to detect at runtime 
> and assert, is there any magic environment variable or defaults value that 
> can help me catch such incorrect usage?  I've searched but not found...

Not that I know of, but if you really wanted to, you could swizzle the method 
and do an event type check and throw an exception if it's a non-mouse event, 
otherwise call Cocoa's method.


--
Seth Willits

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