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what does -[NSView convertRect:toView:] do with nil view?

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what does -[NSView convertRect:toView:] do with nil view?

Subject: what does -[NSView convertRect:toView:] do with nil view?
From: "Adam R. Maxwell" <email@hidden>
Date: Sat, 17 May 2008 13:15:29 -0700

The API documentation for -[NSView convertRect:toView:] reads identically to the documentation for -[NSView convertRect:fromView:] when a nil parameter is passed for the view:

"If aView is nil, this method instead converts from window base coordinates. Otherwise, both aView and the receiver must belong to the same NSWindow object."

I've always assumed that -[someView convertRect:aRect toView:nil] would convert a rect /from/ someView's coordinate system /to/ the view's window's coordinate system, but that doesn't seem consistent with the statement above.

ISTR filing a bug or sending feedback on this a long time ago, but just noticed that it still doesn't make sense to me. Can anyone clarify this?

thanks,
Adam

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