RCPTT consists of two parts – RCPTT IDE, which is used for launching AUTs, developing and running test cases, and RCPTT Runtime, which is automatically put inside AUT in order to provide recording/replaying of user actions.
Installing RCPTT IDE into Eclipse allows you to launch your AUT from sources.
If you want to use RCPTT to connect to AUT from sources, then you should be able to do it like this:
1. Install RCPTT into Eclipse (4.4, 4.5)
2. Checkout your sources and create Eclipse Application launch configuration as you would normally do.
3. In Run->Run configurations dialog find an 'Eclipse Application under Test' launch configuration type, create a new one and on launch configuration property page select your existing Eclipse Application launch configuration.
If you switch to RCPTT perspective then, you should be able to see your AUT in Applications view and launch it.