Method columnCount

GGEasy/forms/formsutil/errordialog.cpp:76–76

public:
    int rowCount(const QModelIndex&) const override { return static_cast<int>(items.size()); }
    int columnCount(const QModelIndex&) const override { return 2; }
    QVariant data(const QModelIndex& index, int role) const override
    {
        switch (role) {