I grabbed the last github source, including your last commit (I checked that is present)
but for me it is still “no-go”: I’ve no output from Midi (whatever it is: “from_Iannix” or “Midi Through”)
Did you try on a Linux machine (or virtual one)?
Let me know if I can help.
BTW: in order to build from source I’ve to do 2 small modifications to the code:
1. the first one is related to a devicePixelRatioFScale(), which is undefined in my environment (I understand it is part of Qt 5.6 while I’ve 5.5). I replaced it with 0x10000 where it is present.
2. I had to comment the two lines:
in uihelp.cpp (error message tells me that setWindowFlag is undefined in scope). I don’t think that this is a big issue anyway