C++/CLI 托管C++之类、属性封装【7】

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CLI封装类时，涉及确定性析构与非确定性析构，属性封装使用property。

【1】C++导出类

class  EXPORTDLL_CLASS CAddSub{public:    CAddSub(){        m_len = 0;    }    ~CAddSub(){    }public:    int  Add(int x, int y){        return x+y;    }    int  Sub(int x, int y){        return x-y;    }    int  GetLength()    {        return(m_len);    }    void  SetLength(int len){        m_len = len;    }private:    int   m_len;};

【2】CLI类封装

    /// <summary>    /// 4 类测试    /// </summary>    public ref class AddSubCls    {    public:                AddSubCls()        {            m_pCls = new CAddSub();        }        !AddSubCls() //确定性释放        {            delete m_pCls;        }        ~AddSubCls() //非确定性释放        {            this->!AddSubCls();        }    public:        Int32  Add(Int32 x, Int32 y)        {            return(m_pCls->Add(x, y));           }        Int32  Sub(Int32 x, Int32 y)        {            return(m_pCls->Sub(x, y));          }        property Int32 Length        {            Int32 get()            {                return(m_pCls->GetLength());            }            void set(Int32 len)            {                m_pCls->SetLength(len);            }        }            private:        CAddSub     *m_pCls;    };

C#测试函数：

AddSubCls addSubCls = new AddSubCls();int sum = addSubCls.Add(1, 4);addSubCls.Length = 6;

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