> Out of curiosity I looked at the code of the Theme Editor which is written > in C++. And saw, e.g. in the class SkinViewer, that the destructor is > declared as a non-virtual function. But shouldn't (almost always) > destructors be declared as virtual functions so that the framework (Qt in > this case) can correctly destroy custom > objects?<http://portal.gmx.net/de/go/dsl>
You are perfectly right. When deriving from a class, the destructor should always be virtual in order to call the destructor of the base class.
