Thanks for the detailed explanation, it's clearer now. The main reason for closing them all and re-opening them all is to simply code that dynamically changes all characters relating to devices of interest/operations on those devices. Say in response to a gui operation that changes everything on the...

Thanks. So if you get a re-attach event on the object, are the callbacks that you applies re-instated? I guess that's like asking if I haven't called a close on the object, will the callbacks still be active if that particular phidget re-attaches? Can I call the close upon the detach event and then ...

I have another question. The API show's how to attach call backs for various events and to create a digital output object. However, the example Java code does not make it clear what happens after a detach event. If a detach event is received for an interfacekit with a specific serial number, what ha...

I think because the Phidget21 code relied on a USB library that is no longer being distributed on Linux systems. I have the same problem.