Hi all, I just started to learn some C++. Currently I'm working on some Qt MIDI tools. I've found some code which makes life for me much easier. The code is licensed under a MIT license and can be found here: http://www.music.mcgill.ca/~gary/rtmidi/index.html#license The free Qt version I use is under GPL. I wonder if I'm allowed to distribute a Qt application as a GPL application even if I include the classes mentioned above, or if I need to implement my MIDI connectivity by myself. Any opinion is much appreciated. Thanks & best regards ce