On 2012-11-15 16:39, Sven Barth wrote: > Note: Although the IFPObserver and IFPObserved interfaces are defined as > Corba interfaces you should be able to use "YourInstance as IFPObserver" > instead of "Supports()". Correct, but my preference is to use Supports() - it makes the code easier to read and follow. Regards, - Graeme -