调试版本中的CObject复制构造函数错误（C2248） [英] CObject Copy constructor Error(C2248) in debug build

问题描述

大家好。我一直在尝试调试一个应用程序，但它只在调试中给出了错误

build。发布版本工作正常。我需要更改一些项目设置或排除一些dll吗？

i在输出窗口中获取以下调试输出消息。



C：\\ \\ Program Files \ Microsoft Visual Studio 10.0 \VC \atlmfc\include\afxtempl.h（262）：错误

C2248：''CObject :: CObject''：无法访问私有在类''CObject'中声明的成员'



C：\Program Files \ Microsoft Visual Studio 10.0\VC\atlmfc\include\afx。 h（535）：参见

声明''CObject :: CObject''



C：\Program Files\Microsoft Visual Studio 10.0\VC\atlmfc\include\afx.h（510）：请参阅

声明''CObject''



此诊断发生在编译器生成的函数中

''CArray< type，arg_type> :: CArray（const CArray< type，arg_type>&）''

with

[

TYP E = CString，

ARG_TYPE = CString

]

Hi to all. I have been trying to debug an application but it is giving me error only in debug
build. release build works fine. do i need to change some project settings or exclude some dlls?
i get the following debug output message in output window.

C:\Program Files\Microsoft Visual Studio 10.0\VC\atlmfc\include\afxtempl.h(262): error
C2248: ''CObject::CObject'' : cannot access private member declared in class ''CObject''

C:\Program Files\Microsoft Visual Studio 10.0\VC\atlmfc\include\afx.h(535) : see
declaration of ''CObject::CObject''

C:\Program Files\Microsoft Visual Studio 10.0\VC\atlmfc\include\afx.h(510) : see
declaration of ''CObject''

This diagnostic occurred in the compiler generated function
''CArray<type,arg_type>::CArray(const CArray<type,arg_type> &)''
with
[
TYPE=CString,
ARG_TYPE=CString
]

推荐答案

这是一个保护:)：

This is a protection :) :

private:
    CObject(const CObject& objectSrc);              // no implementation

...而 CArray 类没有复制构造函数。



为什么它是保护？

CArray 不知道必须如何复制其成员，以及 CObject （base）。 .. :)



所以，例如，代码：

...while the CArray class has not a copy constructor.

Why is it a "protection" ?
CArray do not know how its members must be copied, and CObject (base) as well... :)

So, for example, the code:

{
  CArray<CString>* pArray(new CArray<CString>);
  pArray->Add(_T("One"));
  pArray->Add(_T("Two"));

  CArray<CString> arTest(*pArray);

  delete pArray;
  pArray = NULL;

  TCHAR tchTest(arTest[0].GetAt(1) + arTest[1].GetAt(2));
}

...可能会在最后一行发生崩溃：）

... may provide a crash at its last line :)

这篇关于调试版本中的CObject复制构造函数错误（C2248）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！