I&#39;d like a simple example of exporting a function from a C++ Windows DLL.

I&#39;d like to see the header, the `.cpp` file, and the `.def` file (if absolutely required).

I&#39;d like the exported name to be ***undecorated***. I&#39;d like to use the most standard calling convention (`__stdcall`?). I&#39;d like the use `__declspec(dllexport)` and not have to use a `.def` file.

For example:

      //header
      extern &quot;C&quot;
      {
       __declspec(dllexport) int __stdcall foo(long bar);
      }
        
      //cpp
      int __stdcall foo(long bar)
      {
        return 0;
      }

I&#39;m trying to avoid the linker added underscores and/or numbers (byte counts?) to the name. 

I&#39;m OK with not supporting `dllimport` and `dllexport` using the same header. I don&#39;t want any information about exporting C++ class methods, just c-style global functions.

***UPDATE***

Not including the calling convention (and using `extern &quot;C&quot;`) gives me the export names as I like, but what does that mean? Is whatever default calling convention I&#39;m getting what pinvoke (.NET), declare (vb6), and `GetProcAddress` would expect? (I guess for `GetProcAddress` it would depend on the function pointer the caller created).

I want this DLL to be used without a header file, so I don&#39;t really need the a lot of the fancy `#defines` to make the header usable by a caller.

I&#39;m OK with an answer being that I have to use a `*.def` file.


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Exporting functions from a DLL with dllexport