VS2017 C++ 生成dll并调用

#include "pch.h" #include <iostream> //system #include <Windows.h> //local typedef int(*xj_TestAdd)(const int &a, const int &b); // 声明 typedef void(*xj_TestReadImage)(const std::string &imgPath, int &width, int &height); HMODULE hm = LoadLibrary(L"xj.dll"); // 引用dll int main() { if (hm != NULL) { int a = 11, b = 55; xj_TestAdd xjAdd = (xj_TestAdd)GetProcAddress(hm, "xjTestAdd"); int sum = xjAdd(11, 55); std::cout << a << " + " << b << " = " << sum << std::endl << std::endl; std::string path = "F:/test.jpg"; int width = -3, height = -3; xj_TestReadImage xjReadImage = (xj_TestReadImage)GetProcAddress(hm, "xjTestReadImage"); xjReadImage(path, width, height); std::cout << "width = " << width << ", height = " << height << std::endl << std::endl; } }