This is a very frustrating error message in Qt Creator: ’XYZ’ does not name a type. This usually means that there is an error in the class XYZ that prevents the compiler from generating the type, but there are no additional hints as to what went wrong.
Any suggestions?
If you're using templates, then you need to precede the class name with "typename" so that the compiler can recognize it as a type...
template <typename t> //...
Do you get the error from the compiler or the IDE (as a squiggly underline)? I've encountered this in Qt Creator 1.2.9 and I think it's a bug in the IDE.