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Asked: 2026-06-11T17:51:41+00:00

I am developing in app that will insert an blob file in a database

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I am developing in app that will insert an blob file in a database .I am using ODBC for connecting to the database .
I also need to use some MFC libraries .So my problem is in order to use the MFC libraries i changed in proget->Config. Setting->General->Use MFC in a shared DLL, but when i do this i get the this link errors :

InsertBlob.obj : error LNK2019: unresolved external symbol _SQLFreeHandle@8 referenced in function "public: bool __thiscall ODBC::InternalConnect(char *)" (?InternalConnect@ODBC@@QAE_NPAD@Z)
InsertBlob.obj : error LNK2019: unresolved external symbol _SQLDriverConnect@32 referenced in function "public: bool __thiscall ODBC::InternalConnect(char *)" (?InternalConnect@ODBC@@QAE_NPAD@Z)

I have posted only two of them but there are 12 in total.
If i change the settings back to Use standard windows libraries the link errors disappear but i cannot use CString CFile etc.

Is there any way to use them the two of them in the same app ? I am an c++ novice .

Thanks .

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1 Answer

  1. Editorial Team

    With “Use MFC in a shared DLL” I also have the following files listed in Linker – Input – Additional Dependencies:

    odbc32.lib
    odbccp32.lib

    These files are from the Windows SDK, so the path to these files will probably be something like:

    C:\Program Files\Microsoft SDKs\Windows\version???\Lib\

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