我们真正想做的是从图像注册表获取图像描述符。

What we would really like to do is get the image descriptor from the image registry.

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然后打开设备驱动器并获取文件描述符。

Then, open the device driver and get the file descriptor.

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您可以在这里看到 Cocoa 的便捷性：您只需从数据表获取它的新排序描述符，使用它们来对 CPDictionary 重新排序，然后重新加载数据表。

You can see the convenience of Cocoa at work here: you simply get its new sort descriptors from the table, use them to re-sort the underlying CPDictionary, and then reload the table.

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