qt6

Is your feature request related to a problem? Please describe.
Standard mode has the usual keystrokes for notepad, but there are more that would probably be useful.

Describe the solution you'd like
As a first step, a quick review of the common keystrokes in notepad/wordpad/work, for example might throw up some obvious ones we could add

The cxx-qt-gen/src/cxx_qt.cpp file must create a C++ wrapper function for every function we want to use on an opaque type on the Rust side.

That requires a lot of boilerplate code that should be automated.

Currently we use #ifdef __clang__ to conditionally toggle code, even if the real reason for the toggle is libc++, rather than clang. We should throughly review all the ifdefs and see where the ifdef really should be about libc++ version rather than clang itself.

I don't want to keep working on it right now though. Took a long time today to just get it looking as good as it does.