When should I derive a class from QObject?

Question

I am developing a Qt application and I am wondering if there are any benefits to create QObject classes other than adding signals and slots to them.

Answer 1

Besides assigning signal/slot features, QObject also add a few number of reflection capabilities on C++ classes.

If you want to add a subset of a QObject you can use Q_GADGET, which add some of the reflection features and things like Q_ENUM, Q_PROPERTY, etc.

The docs has more information about it