I don't know if JNA is also able to map enums.

Thus I would define constants for the enum values. It's easy and implemented very fast: public static final int sunday = 0;

But if you are searching for an perfect solution with a typed parameter, you could spend more time in studying NativeMapped. You can find an example of a NativeMapped class in the examples.jar. There is a class called X11 which contains a subclass "Atom". And this class extends NativeMapped. Within the class there are lots of constants defined. Now you could also define a class like Atom for your enumeration. But it's much more difficult then simple define int constants. That's why I would suggest you the fist solution.

Regards, Stefan

daniel jeem schrieb: