windows中文作業系統下，vs的c++專案預設編碼是GB2312

python預設是utf-8編碼

最好在c++程式頂上加：

#pragma execution_character_set("GB2312")

c++中的字串一定就是gbk編碼

傳入python前要做編碼轉換

準備一個gbk轉utf8的函式，如下（網上的）：

 string GbkToUtf8(const char* src_str)
    {
      int len = MultiByteToWideChar(CP_ACP,src_str,-1,NULL,0);
      wchar_t* wstr = new wchar_t[len + 1];
      memset(wstr,len + 1);
      MultiByteToWideChar(CP_ACP,wstr,len);
      len = WideCharToMultiByte(CP_UTF8,NULL);
      char* str = new char[len + 1];
      memset(str,len + 1);
      WideCharToMultiByte(CP_UTF8,str,len,NULL);
      string strTemp = str;
      if (wstr) delete[] wstr;
      if (str) delete[] str;
      return strTemp;
    }

示例性程式碼：

#pragma execution_character_set("GB2312")
#include <stdlib.h>
#include <Windows.h>   
#include <iostream>
#include <Python.h>
#include <string>
#include <atlstr.h>

using namespace System;
using namespace System::Runtime::InteropServices;
using namespace System::Collections::Generic;
using namespace System::Diagnostics;
using namespace System::Threading;
using namespace std;

int main()
{  
  const char* name = "東方紅1號";
  Py_Initialize();//初始化python
  PyRun_SimpleString("import sys");
  PyRun_SimpleString("sys.path.append('./')");
  PyObject* pModule = PyImport_ImportModule("hello");
  PyObject* pFunc1 = PyObject_GetAttrString(pModule,"sayhello");   
  PyObject* pArgs = PyTuple_New(1);
  PyObject* pV1 = Py_BuildValue("s",GbkToUtf8(name).c_str());      
  PyTuple_SetItem(pArgs,pV1);
  PyObject* result = PyObject_CallObject(pFunc1,pArgs);
  Py_Finalize();
  return 0;

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