为什么 NSWindow 不恢复其状态（使用 Lion 中的 Resume）？
我正在努力在我以前的 Snow Leopard 应用程序中实现 Resume。对于我的应用程序的主窗口，我在 Interface Builder 中选中了“可恢复”复选框，一切正常。它的委托有 -window:willEncodeRestorableState:state 和 -window:didDecodeRestorableState: 调用，很好。一切正常。
我有另一个窗口，当用户退出时有时也会打开。我检查了Restorable，并实现了上面的两个方法。当我在窗口打开的情况下退出时， ..willEncode.. 会被调用，但 ..didDecode.. 永远不会被调用，并且窗口不会恢复。我已阅读 文档，看起来我可能想创建一个恢复类，但是文档并没有特别清楚如何做到这一点。
我尝试在我的 AppDelegate 和第二个可恢复窗口的委托中实现 +restoreWindowWithIdentifier:state:completionHandler: 方法从未被调用其中。
我缺少什么？我是否走在正确的轨道上 NSWindowRestoration 但做得不对？从文档谈论恢复类的方式来看，听起来好像只有一个。我需要在应用程序的 plist 中指定它吗？
I'm working on implementing Resume in my formerly Snow Leopard app. For my app's main window, I checked the Restorable checkbox in Interface Builder, and everything's working fine. Its delegate has -window:willEncodeRestorableState:state and -window:didDecodeRestorableState: called on it, just fine. Everything works.
I have another window that is also going to sometimes be open when the user quits. I checked Restorable for it, and implemented the two methods above. ..willEncode.. gets called when I quit with the window open, but ..didDecode.. never gets called, and the window doesn't get restored. I've read through the documentation and it seemed like I may want to create a restoration class, but the docs weren't particularly clear on how to do so.
I tried implementing the <NSWindowRestoration> protocol in my AppDelegate, and in my second restorable window's delegate, but the +restoreWindowWithIdentifier:state:completionHandler: method never got called for either of them.
What am I missing? Am I on the right track with NSWindowRestoration but not doing it right? The way the docs talked about the restoration class, it sounded like there would only be one. Do I need to specify it in the app's plist or something?
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上面链接的内容 简历文档忽略提及的是
NSWindow的-restorationClass属性。如果您在代码中设置此属性（为实现What the above linked Resume documentation neglects to mention is
NSWindow's-restorationClassproperty. If you set this property in code (to a class that implements<NSWindowRestoration>, then that class is responsible for creating the window.