C++：从嵌套类（在派生类中）访问基类成员

问：

我目前有以下问题（简单的问题）。 我想从嵌套类访问基类的公共成员。显然它不那么容易工作...... 这里的正确解决方案是什么？

我是否必须将 *this 传递给派生类中的嵌套类？

谢谢你的思考！

#include <iostream>

class base
{
public:
    virtual void update() = 0;
    void drawCircle(const int& num) const { std::cout << "Base Clase: Circle " << num << " completed..." << std::endl; };
private:
};

class derived : public base
{
public:
    class nestedClass
    {
    public:
        void drawSomeCircle() const {
            drawCircle(1);  // does not work!
            drawCircle(2);  // does not work!
            drawCircle(3);  // does not work!
        }
    private:
    };

    void update() override
    {
        // make some graphic stuff
        myInnerNestedClass.drawSomeCircle();

        // access base class member drawCircle from here --> is working
        drawCircle(4);
    }
    nestedClass myInnerNestedClass;

private:
};

int main()
{
    derived oneDerivedClass;
    oneDerivedClass.update();
    return 0;
}