I don't know, if I'm the first one who mensions it, but there are classes missing in the net_rim_api.jar (in my case 4.2.1). At the moment I found a class and a Interface, which are mentioned in the api as a reference, but in fact, there is no documentation or class file...
I read of this class in the Application.invokeLater
API, but the class is not in the package.
The Application class has a Method addTrackballListener(net.rim.device.api.system.Tra ckballListener trackballListener), but this method appears not in the API and I also found no TrackballListener Interface class oder doc...
Even google can't tell me anything, so I hope anyone of you can.