Re: GetMessage Function MFC Mixed mode dll link problems...

From:

"Ben Voigt" <rbv@nospam.nospam>

Newsgroups:

microsoft.public.dotnet.languages.vc,microsoft.public.vc.mfc

Date:

Fri, 2 Jun 2006 10:45:03 -0500

Message-ID:

<#TVRFulhGHA.4896@TK2MSFTNGP05.phx.gbl>

"Marcus Heege" <NOSPAM@heege.net> wrote in message
news:u0ahHjThGHA.4404@TK2MSFTNGP05.phx.gbl...

Hi Craig,

<Craig K> wrote in message news:u%23XnZJOhGHA.3956@TK2MSFTNGP02.phx.gbl...

Marcus,

I tried that and unfortunately it did not help.

Thanks.

Craig

"Marcus Heege" <NOSPAM@heege.net> wrote in message
news:%23LWdt7NhGHA.3916@TK2MSFTNGP04.phx.gbl...

Hi Craig,

<Craig K> wrote in message
news:%23bBnNtNhGHA.4044@TK2MSFTNGP03.phx.gbl...

All,

I have a MFC Mixed mode dll which is working well. I am now tring to
use a regular C++ class from another DLL which has a method called
GetMessage. When I link I get 2 error messages:

MyClass.obj : error LNK2028: unresolved token (0A00074C) "public: class
CMessage * __thiscall CTransmitMessage::GetMessage(int)"
(?GetMessage@CTransmitMessage@DSS@@$$FQAEPAVCMessage@2@H@Z) referenced
in function "private: void __thiscall
CMyClass::ProcessStateResponse(class CStateResponse const &)"
(?ProcessStateResponse@CMyClass@DSS@@$$FAAEXABVCStateResponse@2@@Z)
MyClass.obj : error LNK2019: unresolved external symbol "public: class
CMessage * __thiscall CTransmitMessage::GetMessage(int)"
(?GetMessage@CTransmitMessage@DSS@@$$FQAEPAVCMessage@2@H@Z) referenced
in function "private: void __thiscall
CMyClass::ProcessStateResponse(class CSaveStateResponse const &)"
(?ProcessStateResponse@CMyClass@DSS@@$$FAAEXABVCStateResponse@2@@Z)

CMyClass::ProcessResponse( stateMsg )

...

CMessage* pMessage = stateMsg.GetMessage( i );

...

This class and function have been used for years, but I get this
specicific link error when I use it from any MFC Mixed mode dll. If I
rename the function something other than GetMessage, I do not get the
linking errors. This leads me to think there is some conflict on the
GetMessage name with the .Net Framework but I do not know how to
resolve this. Any ideas?

Thanks!

Craig Klementowski

what happens if you
#undef GetMessage
in the file that causes the errors?

Marcus

Is it possible to repoduce the poblem in a small VS solution, so that I
can do further reseach?

Please view the DLL containing CTransmitMessage with DependencyWalker. Most
likely while the DLL was built, it renamed the function to GetMessageA.

www.dependencywalker.com