The NSImageCacheMode EnumeratedType describes how an NSImage caches its data. Note that all image caching is done by NSImage, not by NSImageRep.

You can get an image’s cache mode with -[NSImage cacheMode] and change it with -[NSImage setCacheMode:].

Due to a bug in NSPDFImageRep, you should always draw it without caching. There are a couple ways to do this:

• Change its containing image’s cache mode to NSImageCacheNever.
• Always draw it using NSImageRep’s -draw� methods. Since caching is done by NSImage, NSImageRep ignores it.

You can also use NSImageCacheAlways to force the image to be preloaded before drawing.