问从基类方法或其他建议访问派生类方法

EN

class Graphics
{
    // ...

public:
    template <typename Type, typename... Types>
    void draw(Type const& object, Types const&... objects)
    {
        // ...
        addToBatch(object, objects...);
        // ...
    }

protected:
    void addToBatch(Type const& object, Types const&... objects)
    {
        _addToBatch(object);
        if constexpr (sizeof...(objects) > 0)
            addToBatch(objects...);
    }

    void _addToBatch(Rect rc, Brush b);
    void _addToBatch(std::pair<Rect, Brush> rcAndBrush)
    {
        _addToBatch(rcAndBrush.first, rcAndBrush.second);
    }
    void _addToBatch(TextLayout const& tl, Brush b, Point origin);
    // ... etc
}


class SpecializedGraphics : public Graphics
{
    // ...

protected:
    // here I want to implement methods for specialized complex processing,
    // which will use _addToBatch methods from base class
    void _addToBatch(Entry const& e);
    void _addToBatch(Menu const& menu);
    // etc
}

int main()
{
    Rect rcClient;
    Brush brush;
    Entry e;
    Menu menu;
    // etc

    SpecializedGraphics gfx;
    gfx.draw(
        std::make_pair(rcClient, brush),
        e,
        menu,
        // etc
    )
    return 0;
}