PCSX2 Documentation/The PCSX2 Program Flow
AppMain.cpp - this is where the fun begins!
There is a lot that happens under the hood with wxWidgets. We don't need to worry about that. All we need to worry about is this this line of code in AppMain.cpp. <source lang="cpp">IMPLEMENT_APP(Pcsx2App)</source> This macro tells the wxWidgets framework that we want to fire up Pcsx2App. Easy, right?
Pcsx2App - the part we care about
So where does Pcsx2App live? Well, the declarations are in the header file App.h and the declarations are in a few different files. But let's take a look at AppInit.cpp