Hello. I'm trying to port (hack) the uc_paypal module to handle another payment system: GPal. I just need to implement the website payments standard feature of the uc_paypal module.
I have documentation on GPal's API. It's very similar to PayPal's so I figured it would be a good start.
I'm confused as to what happens after the submit order button is pressed during checkout. That is, what is the sequence of events that takes place (function calls, etc.) after the submit order button is pressed? Can someone point me to where the documentation resides on this site?
If I can figure out what's happening after the submit button is pressed, I can add the correct code to communicate with GPal's system.