Q_OBJECT can be used with those classes which are derived from QObject at any level.
as QFileIconProvider is not derived from QObject, it cannot be used with Q_OBJECT.
Expert
Re: SubClass QFileIconProvider (from QDirModel) not compile....
Q_OBJECT can be used with those classes which are derived from QObject at any level.
as QFileIconProvider is not derived from QObject, it cannot be used with Q_OBJECT.
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