To add a user perspective to the discussion: Please keep things simple and 
consistent. Consistency is great, especially in large code bases.

Changing access modifiers for an existing interface in a derived class is 
confusing. Due to the way the documentation is structured, it’s also hard to 
see in the docs.

Having to cast to the base class in order to access the interface is confusing. 
Do we bypass the implementation of the derived class? Of course not, but I 
wonder how many developers would stumble with that.



I see two clean approaches:

1) Make event() public consistently

2) Create a new non-virtual public interface in Qt 6.x that can be used to call 
event(). Document that public access to event() will be removed in Qt7, and 
people using it should migrate to the new interface. Then, in Qt 7, make the 
virtual functions protected consistently.



Option 2 would be the cleaner one, but some people may hate you for upsetting 
their codebase.



Kind regards



Robert

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