On Tue, Mar 24, 2009 at 8:39 AM, Peter Zegelin <pe...@fracturedsoftware.com> wrote:
> [value description] gives just a string <................> with > nothing obvious in it. This is basic Cocoa 101: http://developer.apple.com/documentation/Cocoa/Conceptual/CocoaFundamentals/CocoaObjects/CocoaObjects.html Also look at the -description method here: http://developer.apple.com/documentation/Cocoa/Reference/Foundation/Protocols/NSObject_Protocol/Reference/NSObject.html > So how do I transform whatever value is into an NSData object for > archiving? You haven't mentioned whether you've read this: http://developer.apple.com/documentation/Cocoa/Conceptual/ValueTransformers/ValueTransformers.html Essentially, you should already know what kinds of objects to expect, what to convert, and what to ignore. If you expect to receive more than one type (and you shouldn't with an NSImageView, since it won't let you insert anything other than an NSImage or nil), then you can ask it for its -class or -className to figure out what it is and what to do with it. In your case, you should probably only be checking for nil (and returning nil or the [NSNull null] placeholder in kind) or, if it's an image, archive it and return the NSData object, or vice-versa (depending on which direction is "reverse" for you). Since you haven't provided a full code listing, I can't tell if you're missing anything else. -- I.S. _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
