It looks like there is no public getter for the "window" IBOutlet, even though Interface Builder knows about it and even though there is a public *setter*.

You can get to your window by way of the document's "windowControllers" array. Unless you've overridden makeWindowControllers to do otherwise, it will contain just one NSWindowController, and you can ask it for its window. This worked for me in a scratch app I just created.

If windowControllers does have multiple elements, I think you'll need to add some way to figure out which is the one you want. But I've never had that situation, so maybe there is a better answer.

--Andy