nodejs ffi 调用dll

安装依赖

npm install --global --production windows-build-tools(在管理员权限打开的命令行中执行)

npm install -g node-gyp //依赖python2.7，包含在windows-build-tools中

安装 node-ffi

npm install ffi

安装ref

npm install ref

'use strict';
const path = require('path');
let ffi = require('ffi');
let mydll = path.join(__dirname, '../dll/helloworld.dll');
let dll= ffi.Library(mydll, {
    'helloworld': ['int', ['int']]
});

console.log(dll.helloworld(1));//关闭 RLM 通信端口