解决c++调用python中文乱码问题

windows中文操作系统下，vs的c++项目默认编码是gb2312

python默认是utf-8编码

最好在c++程序顶上加：

#pragma execution_character_set("gb2312")

c++中的字符串一定就是gbk编码

传入python前要做编码转换

准备一个gbk转utf8的函数，如下（网上的）：

 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;
    }

示例性代码：

#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 = "东方红1号";
  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;

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