Cameras in Simconnect

There's a comprehensive section in the SDK that tells you a lot about configuring cameras. I'd like to set these up around an airport, a bit like CCTV I guess. So that just a case of setting up the camera.cfg file. While I haven't quite figured out how the keyboard to camera relationship, I press a key and I get a camera view.However what I'd really like to do is to bring up a camera view by order of SimConnect. This looks like a job for TransmitClientEvent, but I have not found an EventID to do what I need. The SDK documentation is a little sketchy for some of the events in the view section, so it's a lot of trial and error. VIEW_CAMERA_SELECT_START looked like the best bet, but if it I can't make it work.Anyone have experience of this area?