Locking down a WinDev application

The examples from www.sdcdev.net now include a fully working example of how to lock down an application with an 'Application Key'. This does not use a USB key but rather an application key that can be defined by you. This value is then converted to a Serial Number. An activation key is then calculated from the SN.A license file is then produced. How you receive the application key, process it and return it is up to you.