Yes, this is possible with the addition of VS 1.2.2. I am using this version of addin and Qt 4.8.1 in Visual Studio 2012 together.
Addin has limitations for Qt4, but it does all the moc and ui for you.
Limitations:
- you must specify Qt4 include directories and lib paths self (not clickable)
- you do not have Qt 4 file templates (but it still works after changing the include directives of the Qt4 header files to match the Qt4 file structure)
