Using a macro to create QObject derived classes

Question

I\'m trying to simplify (i.e. get rid of loads of boilerplate code) the creation of QObject wrapper classes that forward property access of other QObject<

Answer 1

The vagaries of moc aside, your wrapper is not thread-safe. The property getter is not invoked from the correct thread. So I don't see any point of the wrapper. You might as well use the wrapped class directly from QML, not the wrapper.

To be thread-safe, your wrapper should be caching the wrapped property's value, so that the reads always happen from the local copy.

At that point you might as well write a fully dynamic wrapper that thread-safely forwards all properties from the wrapped object. Using the metaobject system you can generate everything on the fly - the copies of the property values, etc. As far as properties go, you can copy the entire binary descriptor as your wrapper pretends to have the same properties.