this question is not straigntforward to answer. It depends on a number of factors:
- What payment service, does it already come with an SDK to implement that handles the flow
- What target platform
- What type of good are you purchasing, because e.g. Apple has tight restrictions on what goods allow purchasements not done via in-app purchases
So the answer will most likely be specific to the use case. Most probably it is also not a specific Qt/Felgo approach but rather will apply to any framework for this certain use-case.
You can reach out to us with more details on firstname.lastname@example.org so we can discuss your individual use-case.