QDirModel's index overloaded function

[Coises]

Does your sub-class re-implement the other QDirModel::index (the one that takes int row, int column, const QModelIndex& parent), or declare some other member function named “index”?

If so, that declaration hides all inherited functions by the same name. In that case, you could add:

using QDirModel::index;

using QDirModel::index;

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to the definition of your derived class to allow overload resolution of the name “index” to include member functions from QDirModel.