Fixed build with #Qt6 now (and defaulting to that, but #Qt5 still supported).
I also added a README.md explaining the uglyness of what it does with #X11 / #xcb. But again, hey, it works 🙈🍄🐸🦉 (lots of emojis for no purpose, sorry 😂)
The looks with completely unconfigured #Qt6 tell me it needs yet another feature: Configurable scale factor. These emojis are just TOO small 🧌