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Editorial Team
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Asked: 2026-06-12T17:31:39+00:00

I am experimenting with Interface Builder in Xcode 4.2 and iOS 5 on a

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I am experimenting with Interface Builder in Xcode 4.2 and iOS 5 on a old Mac.

In Xcode 3.2 there was always a MainWindow.xib file and it contained not only the File’s Owner which was UIApplication IMHO, but also an App Delegate placeholder object.

I created a MainWindow.xib file using the Window xib template. The AppDelegate placeholder is missing, so I can’t hook the window up to my actual app delegate object.

I suppose that I will need to add a placeholder object with it’s class identity set to “AppDelegate” but couldn’t figure out how.

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1 Answer

  1. Editorial Team

    Just drag out one of the blue cubes (called “Object”) from the objects library and change its class to the class of your app delegate.

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