I have qt4 running in VS 2013 ok but there seems to be a mismatch between the Visual Studios addin 1.2.x and qt4 libraries. This seems to cause “ui_mainwindow.h” to not be found by VS (it will still compile which is very strange). I would like to get things running but I’m stuck. I can’t find libqt5-dev version for qt5 to download and the Visual Studios addin 1.1.x (qt4) won’t install in VS2012. So I’m not sure what to do. Does anyone know how to get the qt5 libraries installed?