A potential customer asked me for a demo of how to use the registration and serial library in a GUI app. To give a decent approximation of how an application might work, I created a serial number generator that encodes the customer number, software expiration date, and program options in the serial number.
Registration FormThere's also something akin to a program registration form. When the proper serial number is entered, it will display the program options, expiration date and customer number.