On 26/01/2010, at 9:10 PM, Oleg Krupnov wrote:

> Now how do I center a window on the screen it currently shows on, on a
> multi-monitor Mac?

You need to consider what this really means. For example, what if a window is 
placed so appears on more than one monitor at the same time?

Actually, NSWindow already works this out - its -screen method returns the 
screen it mostly is placed on (i.e. contains the largest intersected area). 
That's handy.


> I could write my own code to position the window, but I don't know how
> to reproduce the recommended position of the centered window, which is
> slightly above the center.


Traditionally, this has been at a position leaving one third of the space above 
and two thirds below, though I'm not sure if that's still currently the exact 
placing.

--Graham


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