Question

仅出于测试目的我在delphi中创建了一个小DLL。代码是：

library MyDll;
uses
    SysUtils,
    Classes,
    Vcl.Dialogs;
function DllMessage(const echo: string): string;  export;
begin
    //ShowMessage('Hello world from a Delphi DLL') ;
    Result := 'Echo:  ' + echo;
end;
exports DllMessage;
begin
end

我只想用这个nodejs代码运行一些简单的东西：

var ffi = require('ffi');
console.log("1");
var mylib = ffi.Library('MyDll', {'DllMessage': [ 'string', [ 'string' ] ] });
console.log(2");
var outstring = mylib.DllMessage('abc');
console.log("3" + outstring);

问题是我看到＆＃34; 1＆＃34;和＆＃34; 2＆＃34;在控制台上没有别的。请帮忙，任何想法？

提前致谢

Answer 1

将字符串数据作为缓冲区传递

var message = Buffer.from('abc')
var outstring = mylib.DllMessage(message);
console.log("3" + outstring);

无法使node-ffi模块正常工作

1 个答案: