But when I add this line into top of function :

AFX_MANAGE_STATE(AfxGetStaticModuleState());

Then Compiler error :

mfcs42d.lib(dllmodul.obj) : error LNK2005: _DllMain@12 already defined in DLL_TESt2.obj
mfcs42d.lib(dllmodul.obj) : error LNK2005: __pRawDllMain already defined in DLL_TESt2.obj

I don't understand why
How can I do?