mfc dll export function

I have an MFC Dll in which I have crated a new class Now I want to access one of the function of that class from another MFC application For that do I need to export the whole class or just that function? I'm trying to export a C++ class from a DLL and use it in some EXE The syntax recommended by Microsoft is the following : #define DllExport __declspec( dllexport . You can build an extension DLL which exports a few functions or small classes and has a size of 10-15 KB Obviously, the size of your DLL depends on how much code you store in it, but in general MFC extension DLLs.hi I do what do you write me, but still doesnt work I can see exported function but I cant load dll now my def file like below; ///// ; NewMfc2.def : Declares the module parameters for the DLL. Hello All, From Exe function, I am able to call MFC function by loading dll Now, I need to call a exe function, from dll For that, I am using followin. Article Starts --> Exporting C++ classes from extension DLLs and importing those classes into applications can be a little confusing at times.Question/Article of: 'export functions from MFC extension DLL', with 4 Comments. How to export class member function / data in DLL using def file I have several questions about dll: 1 How to export variables in DLL using def file I hello, how i export whole class with all dependency include main class · >how i export whole class with all dependency include main class Have you tried a search? www.codeproject.com/Articles/161/Exporting-C-Classes-from-an-MFC-Extension-DLL support.microsoft.com/kb.MFC DLL TUTORIAL, PART 1 Posted by Andrew Fenster on March 6th, 2002 Vote! Tweet; Environment: Visual C++ You can build an extension DLL which exports a few functions or small classes and has a size of 10-15 KB Obviously. I am getting a NULL as return when I tried to load a function from a dll The function is exported as extern C and the dll is loaded explicitly. Building an Extension DLL You can use AppWizard to create an MFC Extension DLL project, and it will automatically generate the appropriate compiler and linker settings.