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Editorial Team
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Asked: 2026-05-26T19:27:32+00:00

I have a Visual Studio 2010 project done on MFC. I receive these errors:

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I have a Visual Studio 2010 project done on MFC. I receive these errors:

2>COrderContentsItemsDocument.obj : error LNK2028: unresolved token (0A0001CA) "public: static struct CRuntimeClass * __stdcall COrderContentsItem::GetThisClass(void)" (?GetThisClass@COrderContentsItem@@$$FSGPAUCRuntimeClass@@XZ) referenced in function "public: virtual struct CRuntimeClass * __thiscall COrderContentsItemsDocument::GetItemsRuntimeClass(void)" (?GetItemsRuntimeClass@COrderContentsItemsDocument@@$$FUAEPAUCRuntimeClass@@XZ)

2>COrderContentsItemsDocument.obj : error LNK2019: unresolved external symbol "public: static struct CRuntimeClass * __stdcall COrderContentsItem::GetThisClass(void)" (?GetThisClass@COrderContentsItem@@$$FSGPAUCRuntimeClass@@XZ) referenced in function "public: virtual struct CRuntimeClass * __thiscall COrderContentsItemsDocument::GetItemsRuntimeClass(void)" (?GetItemsRuntimeClass@COrderContentsItemsDocument@@$$FUAEPAUCRuntimeClass@@XZ)

2>..\..\Output\Win32\Debug_Unicode\MindSalesManager.exe : fatal error LNK1120: 2 unresolved externals

After some research, I disocovered,that the problem comes when I call

RUNTIME_CLASS(COrderContentsItem)

So, this class is a new one that I copied from another already existing. So I am wondering to discover what is the problem.

Cheers,
Sérgio

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1 Answer

  1. Editorial Team

    The solution is to change the COrderContentsItem.cpp file properties. On solution Explorer, right-click the file, Choose Properties, and in Configration Properties > General change the Item type from “C/C++ header” to “C/C++ compiler”.

    May be I did something wrong when creating the file, e. g. choosing .h file instead of .cpp file.

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