来自我的MFC / CLI项目的LNK2005错误（本机和托管代码） [英] LNK2005 error from my MFC / CLI project ( Native and Managed Code)

问题描述

您好b $ b

我有一个来自MFC / C ++ VS2010的项目，但我需要在我的项目中使用.NET Library。实际上我需要同时拥有本机和管理代码。所以我试图使用CLI / C ++工具和集成，为此我从VS2010创建了空CLI项目，然后我在这个项目中添加了我所有的MFC源，但是当我想构建它时，我得到这些错误：



错误4错误LNK2005：public：virtual int __thiscall CComboEdit :: PreTranslateMessage（struct tagMSG *）（？PreTranslateMessage @ CComboEdit @@ UAEHPAUtagMSG @ @@ Z）已在InPlaceList.obj中定义D：\ KTC \ EWS \Source \ EWS-CLI\EngSystem\EngSystem \ GridCellCombo.obj EngSystem



错误16错误LNK2005：protected：void __thiscall CInPlaceList :: OnKeyUp（unsigned int，unsigned int，unsigned int）（？OnKeyUp @ CInPlaceList @@ IAEXIII @ Z）已在InPlaceList.obj D：\ KTC \ EWS \Source \EWS-CLI \EngSystem\EngSystem\GridCellCombo.obj EngSystem



错误15错误LNK2005：protected：void __thiscall CInPlaceList :: OnKeyDown（unsigned int，un signed int，unsigned int）（？OnKeyDown @ CInPlaceList @@ IAEXIII @ Z）已在InPlaceList.obj中定义D：\ KTC \ EWS \Source \EWS-CLI\EngSystem \EngSystem \ GridCellCombo。 obj EngSystem



错误12错误LNK2005：protected：虚拟结构AFX_MSGMAP const * __thiscall CInPlaceList :: GetMessageMap（void）const（？GetMessageMap @ CInPlaceList @@ MBEPBUAFX_MSGMAP @ @XZ）已经在InPlaceList.obj中定义了D：\ KTC \ EWS \ Source \ EWS-CLI \EngSystem\EngSystem\GridCellCombo.obj EngSystem



错误17错误LNK1561：必须定义入口点D：\ KTC \ EWS \Source \EWS-CLI\EngSystem\EngSystem\LINK EngSystem





另外来自GridCellCombo.cpp我有这些库

 ＃ include     ../ stdAfx.h 
   #include     ../ UserView.h 
   #include     ../ GridCtrl_src / GridCell.h 
   #include     .. /GridCtrl_src/GridCtrl.h 
  
  #include   < span class =code-string>  GridCellCombo.h 
  
 
  #ifdef _DEBUG 
   #define new DEBUG_NEW 
   #undef THIS_FILE 
  静态  char 这个_FILE [] = __FILE__; 
 ＃endif  

任何帮助都将不胜感激。< br $> b $ b

最好的问候。

Homay

解决方案

不知怎的，你包括了一些你的来源两次。这可能发生在许多场景中，但这是我的第一个猜测：

- 你有一个或多个方法在头文件而不是.cpp文件中实现（不是一个很好的方法来实现它）。头文件至少包含两次（这部分并不罕见）。

- 您的项目中包含两次源文件。

- 一些奇怪的东西可以有时会发生如果你的基类在一个dll中实现而派生类在不同的dll中（需要更多细节）。

- ...



另外，如果你有一个混合模式DLL，我相信VS2010需要从/ CLR可执行文件中调用它（我用VS2005完成了这个，但是Microsoft将规则从版本更改为版本而我不是100与VS2010规则的百分比）。我认为VS2010仍然需要先进行.exe混合模式，然后链中的所有DLL从可执行文件到上面描述的DLL。没有非托管DLL可以调用托管代码。您的混合模式DLL可以调用托管代码或非托管代码。



[如果我在这里说了不对的话，任何人都可以随意进入并纠正我... ]

Hi
I have a project from the MFC/C++ VS2010, but I need to use ".NET Library" inside of my project. Actually I need to have a native and manged code at same time. So I am trying to use CLI/C++ facilities and integration, for that purpose I created "Empty CLI" project from the VS2010 and then I added all of my MFC source inside of this project, But When I want to the build it, I get these errors:

Error 4 error LNK2005: "public: virtual int __thiscall CComboEdit::PreTranslateMessage(struct tagMSG *)" (?PreTranslateMessage@CComboEdit@@UAEHPAUtagMSG@@@Z) already defined in InPlaceList.obj D:\KTC\EWS\Source\EWS-CLI\EngSystem\EngSystem\GridCellCombo.obj EngSystem

Error 16 error LNK2005: "protected: void __thiscall CInPlaceList::OnKeyUp(unsigned int,unsigned int,unsigned int)" (?OnKeyUp@CInPlaceList@@IAEXIII@Z) already defined in InPlaceList.obj D:\KTC\EWS\Source\EWS-CLI\EngSystem\EngSystem\GridCellCombo.obj EngSystem

Error 15 error LNK2005: "protected: void __thiscall CInPlaceList::OnKeyDown(unsigned int,unsigned int,unsigned int)" (?OnKeyDown@CInPlaceList@@IAEXIII@Z) already defined in InPlaceList.obj D:\KTC\EWS\Source\EWS-CLI\EngSystem\EngSystem\GridCellCombo.obj EngSystem

Error 12 error LNK2005: "protected: virtual struct AFX_MSGMAP const * __thiscall CInPlaceList::GetMessageMap(void)const " (?GetMessageMap@CInPlaceList@@MBEPBUAFX_MSGMAP@@XZ) already defined in InPlaceList.obj D:\KTC\EWS\Source\EWS-CLI\EngSystem\EngSystem\GridCellCombo.obj EngSystem

Error 17 error LNK1561: entry point must be defined D:\KTC\EWS\Source\EWS-CLI\EngSystem\EngSystem\LINK EngSystem


Additionally from the GridCellCombo.cpp I have these library

#include "../stdAfx.h"
#include "../UserView.h"
#include "../GridCtrl_src/GridCell.h"
#include "../GridCtrl_src/GridCtrl.h"

#include "GridCellCombo.h"


#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

any help would be appreciated.

Best Regards.
Homay

解决方案

Somehow you are including some of your source twice. This can happen from a number of scenarios but here are my first guesses:
- You have one or more of the methods implemented in header files instead of the .cpp files (not a good way to do it). The header files are included at least twice somewhere (this part is not uncommon).
- You have a source file included twice in your project.
- Some bizarre things can sometimes happen if your base class is implemented in one dll and a derived class is in a different dll (more details required).
- ...

Also, if you have a mixed mode DLL, I believe with VS2010 it needs to be called from a /CLR executable (I have done this with VS2005, but Microsoft changes the rules from version to version and I am not 100% with what the rules are for VS2010). I think it is still correct with VS2010 that you need to first make your .exe mixed mode, then all DLLs in the chain from executable to the DLL you are describing above. No unmanaged DLLs can call managed code. Your mixed mode DLLs can call either managed or unmanaged code.

[If I have said something incorrect here, anybody please feel free to jump in and correct me...]

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