[Interest] Qt on windows?

[Jason H]

I had a cohort of mine download an install Qt 5.12.5 for Windows (He's hot a Surface). Qt installed ok, we configured the project for mingw64, but the qmake step errors with mode error like it was expecting -project or -makefile, but never got it. I doctored some paths and it attempted to compile at the command line, but failed at linking "WinMain" (a function the linker was looking for)

It's been ages since I've used windows, or Qt on windows.

How is this supposed to work?