LoadLibrary と GetProcAddress を使用して DLL 関数にアクセスする方法

#include <windows.h>
#include <iostream>

typedef int (__stdcall *f_funci)();

int main()
{
  HINSTANCE hGetProcIDDLL = LoadLibrary("C:\Documents and Settings\User\Desktop\test.dll");

  if (!hGetProcIDDLL) {
    std::cout << "could not load the dynamic library" << std::endl;
    return EXIT_FAILURE;
  }

  // Resolve function address using GetProcAddress
  f_funci funci = (f_funci) GetProcAddress(hGetProcIDDLL, "funci");
  if (!funci) {
    std::cout << "could not locate the function" << std::endl;
    return EXIT_FAILURE;
  }

  std::cout << "funci() returned " << funci() << std::endl;
  
  // Free the library handle when no longer needed
  FreeLibrary(hGetProcIDDLL);
  
  return EXIT_SUCCESS;
}

int __declspec(dllexport) __stdcall funci() {
   // ...
}