I'd rather raise this old topic, than create an identical one.
I'm trying to achieve exactly the same functionality using iOS12 (since yesterday) and Qt 5.10.1 (more recent versions are to be tested yet). It does not work. No updates, no events are coming to my Qt window, and it's not being drawn. Does anyone has a working solution?
This is a very useful set of formatter... My problem is that the formatters works only once in a while. Sometimes I have to start XCode 7.2 several times to make it work. And as soon as I restart the debugger, the formatters don't work anymore. This sounds more like a LLDB bug than a bug from your formatters, I must say...