Once you have your own ID, you can run the AddOnAdmin tool to generate an add-on ID and also get the decimal equivalent of your four-character Developer ID. For Windows users, the AddOnAdmin tool is by default inI cannot click the create a new Addon button to generate a new ID. Therefore as i see it i will not be able to get AC to acknowledge my Addon written in C++.
Program Files\Graphisoft\API Development Kit 5\Support\Tools\Win\AddOn Management
Click Create a New Addon to generate a new ID. Select the first line of the database tree (shows your Dev ID), click Save Database As, and choose *.h as the file type. Personally I don't use the names in that file, but grab the numbers.