Node调用C/C++ DLL

采用addon方式

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1. 构建一个测试dll暴露方法如下，生成DLL文件:

#define API_EXPORT extern "C" _declspec(dllexport)

API_EXPORT int doTest(int a, int b);

2. 编写对应的addon文件test.cc

#include 
#include 

#include 

using namespace v8;

Handle doTest(const Arguments& args) {
  HandleScope scope;

  if (args.Length() < 2) {
    ThrowException(Exception::TypeError(String::New("Wrong number of arguments")));
    return scope.Close(Undefined());
  }

  if (!args[0]->IsNumber() || !args[1]->IsNumber()) {
    ThrowException(Exception::TypeError(String::New("Wrong arguments")));
    return scope.Close(Undefined());
  }

  HINSTANCE hDLL;
  hDLL=LoadLibrary("testdll.dll");//加载动态链接库dlldemo.dll文件；
  typedef int(*doTest)(int a,int b);//函数指针
  doTest test=NULL;
  test=(doTest)GetProcAddress(hDLL,"doTest");
  
  if (test) 
  {
     int A=test(args[0]->NumberValue(),args[1]->NumberValue());
     
     Local num = Number::New(A);
     return scope.Close(num);
  }

  Local num = Number::New(0);
  return scope.Close(num);
}

void Init(Handle