How do I create a mutable array of CGImageRefs?

Question

I want to keep a mutable collection of CGImageRefs. Do I need to wrap them in NSValue, and if so how do I wrap and unwrap them properly? Can I get away with using a C array?

Answer 1

2011: just in case someone's still looking You can wrap CGImageRef in NSValues by using

+ (NSValue *)valueWithBytes:(const void *)value objCType:(const char *)type

hence:

CGImageRef cgImage = [self cgImageMethod];
NSValue *cgImageValue = [NSValue valueWithBytes:&cgImage objCType:@encode(CGImageRef)];
[array addObject:cgImageValue];

to retrieve:

CGImageRef retrievedCGImageRef;
[[array objectAtIndex:0] getValue:&retrievedCGImageRef ];

hope this helps somebody