如何在本机类中注入C ++ / CLI基类ref类。 [英] How to injection C++/CLI base ref class to in native class.

问题描述

我想在本地其他课程中使用我的基础ref课程。



我的代码是这样的。



这是头文件中的第一个类：

I want to use my base ref class in native other class.

My code is like this.

This is first class in a header file:

#include "SecondNativeClass.h"
using namespace System;
namespace Vrp
{
    public ref class BaseClass
    {
    public:
        ~BaseClass()
        SecondNativeClass* mysec;
        DoSomething()
        {
         mysec = new SecondNativeClass();
        }
        .
        .
        .
    }
}

这是头文件中的第二类：

This is second class in a header file:

#include "AnotherNativeClass.h"
using namespace System;
namespace Vrp
{
    //class BaseClass;
    public class SecondNativeClass : public AnotherNativeClass
    {
    public:
        SecondNativeClass();

//        I have try this
        gcroot<BaseClass^> base;    //-> Returned errors

//        I tried that, but again errors;
        BaseClass* base;             //-> Returned errors

//        I tried that, but again errors;
        BaseClass^ base; //-> Returned errors

//        I tried that like as on MSDN page (Mix Types Safely and Correctly)
        msclr::auto_gcroot<BaseClass^> base; //-> Returned errors
        .
        .
        .
    }
}

如果我写class BaseClass;在SecondNativeClass之上...

这次我得到这个已经定义的BaseClass错误。



所有课程在同一名称空间但是编译器返回错误。



什么是正确定义的代码？

如何解决这个问题？

问候。

If I write "class BaseClass;" on top of SecondNativeClass...
This time I'm getting "this BaseClass already defined" error(s).

All classes in same namespace. But compiler returned errors.

What is right defined code?
How can I fix this problem?
Regards.

推荐答案

你的前向声明必须有 ref 修饰符，因为BaseClass是一个托管类。 />


我认为你不能在本机类上拥有 public 修饰符（ SecondNativeClass ）。



gcroot 或 auto_gcroot 必须用于本机类中的托管成员。如果对象应自动处理，则需要依赖。

You must have ref modifier on your forward declaration since BaseClass is a managed class.

I don't think you can have the public modifier on a native class (SecondNativeClass).

gcroot or auto_gcroot must be used for a managed member in a native class. Which want depend if the object should be automatically disposed.

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