Forward declare a struct in Objective-C

Question

I\'m creating a protocol, and one of the parameters to a method I\'m defining is a CMTime*. I would like to forward declare CMTime as opposed to in

Answer 1

If you want the files which have the forward declaration to know about the contents of the struct, they need to either import a header (it can be in multiple places) where it is defined. You can forward declare a struct if you do not need to access its properties, but that is the extent of it.