.Net类库中的公共构造函数->控制台应用程序中的私有成员访问错误 [英] Public constructor in .Net class library --> Private member access error in Console Application

问题描述

我正在尝试包装非常讨厌的本机c ++图像处理库的一部分，以便在托管代码中使用.但是几行之后，我遇到了以下问题.

首先是代码:

我的头文件:

I am trying to wrap part of a very nasty native c++ image processing library to be usable in managed code. However just after a few lines I encountered the following probem.

First of all the code:

My header file:

namespace HalconWrapper {

	public ref class ATMHTuple
	{
	public:

		ATMHTuple();
		ATMHTuple(int);
		ATMHTuple(double);
		ATMHTuple(String^);
		ATMHTuple(ATMHTuple^);
		ATMHTuple(Hlong);
		ATMHTuple(HTuple*);
		ATMHTuple(ICollection<int>^);
		ATMHTuple(ICollection<double>^);
		ATMHTuple(ICollection<String^>^);
		ATMHTuple(Hlong, int);
		ATMHTuple(Hlong, double);
		ATMHTuple(Hlong, String^);
		ATMHTuple(Hlong, HTuple*);
		ATMHTuple(ATMHTuple^, ATMHTuple^);
		ATMHTuple(HTuple*, HTuple*);

		~ATMHTuple();

		property HTuple* T
		{
			HTuple* get() { return tuple; }
			void set (HTuple* value) { tuple = value; }
		}

	private: 
		
		HTuple* tuple;

	};
}

其中一个构造函数的简单实现:

One simple implementation of one of the constructors:

ATMHTuple::ATMHTuple(HTuple* value)
{
	tuple = new HTuple(*value);
}

请不要告诉我使用"HTuple&价值"，我知道这是更好的方法.到目前为止，我只是尝试了很多事情，用指针替换引用就是其中之一.

正如您已经猜到的那样，HTuple是我希望包装的本机类型.这是一个具有联合作为成员的类，用于容纳"long(*)"，"double(*)"或"char *(*)".

MY问题:库编译正常.在我的测试应用程序中，我可以调用所有使用标准值类型或托管类型作为参数的构造函数.但是，一旦我开始调用具有HTuple *(或者当我仍在使用"pass-by-reference")作为参数的HTuple的构造函数时，在编译时就会出现以下错误:

测试应用:

Please do not tell me to use "HTuple& value", I know that it is the better way. I just tried a lot of things so far and replacing references by pointers was one of them.

As you already have guessed HTuple is the native type I wish to wrap. It is a class which has a union as member to hold "long(*)", "double(*)", or "char*(*)".

MY PROBLEM: The library compiles fine. In my test-application I can call all constructors that use standard value types or managed types as arguments. But as soon as I start calling constructors having HTuple* (or just HTuple, when I was still using "pass-by-reference") as arguments I get the following error at compile time:

Test app:

#include "HalconCpp.h"

using namespace System;
using namespace Halcon;
using namespace HalconWrapper;

int main(array<System::String ^> ^args)
{
	Console::WriteLine(L"Initializing Tuples");

	HTuple t1(3l);
	HTuple t2(2l);

	ATMHTuple(3);								//no errors

	Console::WriteLine(L"Concatenating Tuples");

	tuple_concat(t1, t2, &t1);

	Console::WriteLine(L"Causing Exception");

	try
	{
		ATMHTuple^ ht = gcnew ATMHTuple(&t1);	//compiler error
	}
	catch(ATMHTupleException^ e)
	{
		Console::WriteLine(e->Message);
	}

	Console::WriteLine(L"End Of Program.");
	Console::ReadKey();


    return 0;
}

错误1错误C2248:'HalconWrapper :: ATMHTuple :: ATMHTuple':无法访问在类'HalconWrapper :: ATMHTuple'中声明的私有成员

我要包装的类来自静态库.这是问题的原因吗?
是否有可能不允许包装该库?

请给我提示一下可能是什么问题以及如何解决(至少要看哪里).


Martin

---

请给我您的知识----请！

Error    1    error C2248: 'HalconWrapper::ATMHTuple::ATMHTuple' : cannot access private member declared in class 'HalconWrapper::ATMHTuple' 

The class I am trying to wrap is coming from a static library. Is this the cause of the problem?
Is there a possibility that the library does not allow to be wrapped?

Please give me a hint on what could be the problem and how I can solve it (at least where to look).


Martin

---

Give me your knwledge ---- please!

推荐答案

我看不到，您将ATMHTuple(HTuple *)构造函数声明为公共.它与静态库无关，它是编译时错误.我想到的就是获取错误的头文件.如果您希望有人看一下，请将repro项目发布到文件共享服务.

I don't see it, you declared the ATMHTuple(HTuple*) constructor public.  Its got nothing to do with static libraries, its a compile time error.  Getting the wrong header file is all I can think of.  Post a repro project to a file sharing service if you want somebody to take a look at this.

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