C ++从嵌套类方法访问变量 [英] c++ accessing variable from nested class method

问题描述

如何从其嵌套类方法访问类属性?

How can I access class attribute from its nested class method?

class Class1
{
public:
    int attribute;
    void Method1() { 
        class Class2
        {
            public:
               void Method2() { 
                   //here I need to access attribute from Class1
               }
        };
    }
};

推荐答案

您可以将this传递给内部类.例如:

You can pass this to the inner class. For example:

class Class1
{
public:
    Class1() : class2(this) {
    }

    int attribute;
    void Method1() { 
    };

    class Class2
    {
        Class1 *parent;
    public:
        Class2(Class1 *parent) : parent(parent) {
        }
        void Method2() { 
             // parent->attribute
        }
   } class2;
};

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