If you’re using Visual Studio 2012 or 2013 Express with Qt, you can’t use the Qt Addin, but you might still want to have user friendly Qt types showing in your debugger. Luckily this is quite easily achieved :

1. Download the qt5.natvis file from the Qt Git repository.
2. Make sure you have the following folder : <MyDocuments>\Visual Studio 2013\Visualizers and if not, create it.
3. Copy the qt5.natvis file in it, and restart Visual Studio.
4. Done.