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    <blockquote> <p>The Key-Value Coding Programming Guide seems to indicate that I need to save them as NSValues.</p> </blockquote> <p>No, you need an NSValue to pass a point or rectangle to <code>setValue:forKey:</code>. The KVC docs aren't talking about saving the values anywhere, since that isn't part of KVC. And you can't save an NSValue in a property list, since it isn't one of the <a href="http://developer.apple.com/iphone/library/documentation/Cocoa/Conceptual/PropertyLists/" rel="nofollow noreferrer">property list</a> classes.</p> <p>So, you need to convert the rectangle to and from one of the property-list data types. I prefer to convert them to and from strings, which you can do with <a href="http://developer.apple.com/iphone/library/documentation/UIKit/Reference/UIKitFunctionReference/Reference/reference.html#//apple_ref/doc/uid/TP40006894-CH3-SW34" rel="nofollow noreferrer">some of the functions in UIKit</a>.</p> <p>These are actually Core Graphics structures, not UIKit (hence the names <em>CG</em>Point and <em>CG</em>Rect), so you might expect Core Graphics to have functions for this. Indeed it does, but of a different sort: In <a href="http://developer.apple.com/iphone/library/documentation/GraphicsImaging/Reference/CGGeometry/" rel="nofollow noreferrer">CGGeometry</a>, Core Graphics provides functions to convert CGPoints and CGRects to and from dictionaries.</p> <p>Strings or dictionaries: It's your choice. Whichever you choose, they are property lists, so you can store them in your property list output.</p> <p>On retrieval, convert the dictionary or string to a point or rectangle, and <a href="http://developer.apple.com/iphone/library/documentation/UIKit/Reference/NSValue_UIKit_Additions/" rel="nofollow noreferrer">create an NSValue with that</a> to pass to <code>setValue:forKey:</code>. Of course, this works in reverse the other way: When saving, <code>valueForKey:</code> will give you an NSValue, from which you need to extract the point or rectangle to convert to a dictionary or string to save in the plist.</p>
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    1. USPeter Hosey
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    1. COThanks for the info! It looks like strings are easier because I want to edit the plists.
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