error Please #define _AFXDLL or do not use /MD[d] occurs even after making changes in Project Properties

visual-c++ dll mfc
SayaliK picture SayaliK · Jul 30, 2014 · Viewed 66.7k times · Source

I am working on Win32 project in Visual Studio 2011. It is generating MFC error when I includes afx.h or afxwin.h. To resolve this, I have made the following changes in the Project Properties tab : 1) Use of MFC : Use MFC in a shared DLL 2) C++ -> Code Generation -> Runtime Library -> Multi-threaded Debug DLL(/MDd)

Still it gives me following error when I build the solution :

1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\vc\atlmfc\include\afx.h(24): fatal error C1189: #error : Building MFC application with /MD[d] (CRT dll version) requires MFC shared dll version. Please #define _AFXDLL or do not use /MD[d]

My question is why Win32 project is generating MFC error and how should I remove this error.Kindly guide me.

Answer

Ananthalakshmi Sankar picture Ananthalakshmi Sankar · Mar 30, 2015

On Visual Studio 2011, this worked for me:

Project -> "project" Properties -> Configuration Properties -> C/C++ -> Advanced -> Show Includes:YES(/showIncludes)

Project -> "project" Properties -> Configuration Properties -> General -> Project Defaults -> Use of MFC :Use MFC in a shared DLL

(In Visual Studio 2019, the latter setting can be found in "Properties -> Configuration Properties -> Advanced -> Use of MFC"

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