Is it possible to place a MessageBox option in the DLL code which was not built as an MFC dll. in VC++ 6.0 Platform

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Hi, Is it possible to place a MessageBox option in the DLL code which was not built as an MFC dll. in VC++ 6.0 Platform. If possible, please let me know which header file is required. Because I have tried # include windows.h. However, I have got the error as
“error C2501: 'MessageBoxA' : missing storage-class or type specifiers” and “error C2373: 'MessageBoxA' : redefinition; different type modifiers”
I have given try doing changes in project setting as Project Settings->General Tab -> Microsoft Foundation Classes: -> Pull down menu has tree options 1. Not Using MFC
2. Use MFC in a Static Library and 3.Use MFC in a Shared DLL . I have tried all these three option, however, error C2501 and error C2373 are still present. Please suggest me that in this condition how would be Popup Message can display. I believe that MessageBox is MFC class member function. I am not looking only MessageBox, I am ok with any kind of function or member function or API which will prompt to user about error message. I will appreciate help. Thank you.

Posted 21-May-11 3:29am

drcool23

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Albert Holguin · Answer 1 · 2011-05-21T05:26:00

Solution 1

MessageBox() is a WinAPI function, not MFC, so you don't need MFC at all to use it (the MFC version is AfxMessageBox()).

The MSDN description tells you everything you need to know:
http://msdn.microsoft.com/en-us/library/ms645505%28v=vs.85%29.aspx[^]

[edit]
Actually, there is a CWnd::MessageBox() but of course that's also MFC.
[/edit]

Posted 21-May-11 5:26am

Albert Holguin

Updated 21-May-11 5:34am

v3

Comments

Sergey Alexandrovich Kryukov 22-May-11 0:50am

Correct answer, a 5.
--SA

Albert Holguin 22-May-11 16:21pm

thanks SA