Support for classes in Matlab Compiler

Is support for classes still limited as described in the link below? I'm using R2014b.

http://uk.mathworks.com/matlabcentral/answers/92539-how-do-i-compile-user-defined-matlab-classes-using-the-matlab-compiler-4-0-r14

I have an application where the Matlab side of my code has some complex state that needs to be preserved between calls. The obvious design would be to use a class instance. Am I right that this isn't possible?

The work-around appears to be to emulate a class using a structure to contain the state, and explicitly pass this between the driver and the functions that provide the interface to the Matlab side of the code. Is there another way?