first of all, you need some suitable storage (non-volatile memory) in order to store the desired data e.g. a flash memory, EEPROM, SD-Card...
From your GUI project you can read the persistent data after the application has been started or when the different settings are needed. Each time the settings have changed you can store them immediately or just before shut-down.
The access to the non-volatile memory should be handled like any other communication by implementing a device interface. Let me refer to our comprehensive documentation about this topic: Integrating with the device and Implementing a Device Interface.
I hope this helps...
Ask Embedded Wizard
Welcome to the question and answer site for Embedded Wizard users and UI developers.
Ask your question and receive answers from the Embedded Wizard support team or from other members of the community!