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, 0, src_str, -1, NULL, 0);
            wchar_t
 
* wstr = new wchar_t[len + 1];
            memset(wstr, 0, len + 1);
            MultiByteToWideChar(CP_ACP, 0, src_str, -1, wstr, len);
            len = WideCharToMultiByte(CP_UTF8, 0, wstr, -1, NULL, 0, NULL, NULL);
            char* str = new char[len + 1];
            memset(str, 0, len + 1);
            WideCharToMultiByte(CP_UTF8, 
 
0, wstr, -1, str, len, NULL, 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, 0, pV1);
    PyObject* result = PyObject_CallObject(pFunc1, pArgs);
    Py_Finalize();
    return 0;
}