How to call a MFC Regular DLL in Dart or Flutter?

Question

How could I call a MFC Regular DLL in Dart/Flutter?

I successfully called a pure (No MFC) C++ DLL. But when I pasted the same code into a new-created MFC regular DLL project, DART RUN gave me:

Invalid argument(s): Failed to lookup symbol 'hello_world': error code 127 ...

Below is my own code:

• lib_mfc\pch.h:

  extern "C" _declspec(dllexport) void hello_world();
  

• lib_mfc\pch.cpp

  void hello_world()
  {
      printf("[From C++:] Hello World\n");
  }
  

• bin\ffi_sample.dart // it works well for a non-mfc dll

  final dylib = ffi.DynamicLibrary.open(libraryPath);
  final ffi.Pointer<T> Function<T extends ffi.NativeType>(String symbolName) _lookup = dylib.lookup;
  late final _hello_worldPtr = _lookup<ffi.NativeFunction<ffi.Void Function()>>('hello_world');
  late final _hello_world = _hello_worldPtr.asFunction<void Function()>();
  _hello_world();