Is it possible to integrate a payment gateway which gives an iframe to collect user details.I tried it almost 2 years back and failed for some reason I dont remember now. If it's possible and someone has a sample code please do share, it would be a great help!
I don't think it's easy. I have tried without success a couple years ago. The return page will go to the iframe rather than the parent page and i didn't find a way to close the iframe and having the Thank you page on the parent page.
I know that there is a lot of work that is being done lately regarding payment refactoring but i don't know if it tackle this kind of problem.