注意在转换CString到char*时用LPCTSTR

字符串转换相关的。也转了部分。整理成库。
[code]
// MFCConver.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include "MFCConver.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#endif

#include "PStringConv.h"
#include <stdlib.h>
#include <string>
#include <atlbase.h>
#include <atlstr.h>

#using <mscorlib.dll>
// 唯一的应用程序对象
CWinApp theApp;

using namespace std;
using namespace System;

//CLI class
__abstract __gc class Base
{
 int BaseFunction() { return 0; }
};

__gc class Derived : public Base
{

};

void toString(CString &str, LPTSTR *result)
{
   *result = str.GetBuffer();
}

void toUse(const WORD *charb)
{

}

int _tmain(int argc, TCHAR* argv[], TCHAR* envp[])
{
 int nRetCode = 0;

 // 初始化 MFC 并在失败时显示错误
 if (!AfxWinInit(::GetModuleHandle(NULL), NULL, ::GetCommandLine(), 0))
 {
  // TODO: 更改错误代码以符合您的需要
  _tprintf(_T("致命错误: MFC 初始化失败\n"));
  nRetCode = 1;
 }
 else
 {
  PStringConv   tStr;
 
     //char*
  char *orig = "Hello World";

  LPCTSTR lp = "Microsoft";

  CString tString = "Microsoft GoodLuck";
        lp = (LPCTSTR)tString;
  cout<<lp<<endl;

  cout<<orig<< " (char *)" <<endl;

        // 转换到 wchar_t*
  size_t origsize = strlen(orig) + 1;
  const size_t newsize = 100;
  size_t convertedchars = 0;
  wchar_t wcstring[newsize];
  mbstowcs(wcstring, orig, origsize);
        wcscat(wcstring, L"(wchar_t *)");
  wcout<<wcstring <<endl;
  
  //转换到_bstr_t
  _bstr_t bstrt(orig);
  bstrt += " (_bstr_t)";
  cout<<bstrt<<endl;

  //转换到 CComBSTR
  CComBSTR ccombstr(orig);
  if(ccombstr.Append(L"(CComBSTR) ") == S_OK)
  {
   CW2A printstr(ccombstr);
   cout<<printstr<<endl;
  }

  //转换到 CString
  CString cstring(orig);
  cstring += "(CString)";
  cout<<cstring<<endl;

  //Convert to a basic_string
  string basicstring(orig);
  basicstring += "(basic_string)";
  cout<<basicstring<<endl;

  //转化为托管的 System串?
#pragma push_macro("new")
#undef new
 String *systemstring = __gc new String(orig);
 Console::WriteLine("{0}", systemstring);
 

#pragma pop_macro("new")    
 }

 return nRetCode;
}
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