We can't fix the underlying reported problem, but we can warn that the
user has made a mistake.
[ChangeLog][QtCore][QObject] The class template parameter passed to
QObject::findChild() or findChildren() is now required to have the
Q_OBJECT macro. Forgetting to add it could result in finding children of
the nearest ancestor class that has the macro.
Pick-to: 6.7
Fixes: QTBUG-105023
Change-Id: I5f663c2f9f4149af84fefffd17c008f027241b56
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
ce2585d0e9