c++中char*\wchar_t*\string\wstring之间的相互转换

#ifndef USE_H_#define USE_H_#include <iostream>#include <windows.h>#include <string>using namespace std;class CUser{public:CUser();virtual~ CUser();char* WcharToChar(const wchar_t* wp);char* StringToChar(const string& s);char* WstringToChar(const wstring& ws);wchar_t* CharToWchar(const char* c);wchar_t* WstringToWchar(const wstring& ws);wchar_t* StringToWchar(const string& s);wstring StringToWstring(const string& s);string WstringToString(const wstring& ws);void Release();private:char* m_char;wchar_t* m_wchar;};#endif;

#include "stdafx.h"#include "use.h"CUser::CUser():m_char(NULL),m_wchar(NULL){}CUser::~CUser(){Release();}char* CUser::WcharToChar(const wchar_t* wp){Release();int len= WideCharToMultiByte(CP_ACP,0,wp,wcslen(wp),NULL,0,NULL,NULL);m_char=new char[len+1];WideCharToMultiByte(CP_ACP,0,wp,wcslen(wp),m_char,len,NULL,NULL);m_char[len]='\0';return m_char;}wchar_t* CUser::CharToWchar(const char* c){Release();int len = MultiByteToWideChar(CP_ACP,0,c,strlen(c),NULL,0);m_wchar=new wchar_t[len+1];MultiByteToWideChar(CP_ACP,0,c,strlen(c),m_wchar,len);m_wchar[len]='\0';return m_wchar;}void CUser::Release(){if(m_char){delete m_char;m_char=NULL;}if(m_wchar){delete m_wchar;m_wchar=NULL;}}char* CUser::StringToChar(const string& s){return const_cast<char*>(s.c_str());}char* CUser::WstringToChar(const std::wstring &ws){const wchar_t* wp=ws.c_str();return WcharToChar(wp);}wchar_t* CUser::WstringToWchar(const std::wstring &ws){return const_cast<wchar_t*>(ws.c_str());}wchar_t* CUser::StringToWchar(const string& s){const char* p=s.c_str();return CharToWchar(p);}string CUser::WstringToString(const std::wstring &ws){string s;char* p=WstringToChar(ws);s.append(p);return s;}wstring CUser::StringToWstring(const std::string &s){wstring ws;wchar_t* wp=StringToWchar(s);ws.append(wp);return ws;}

如果涉及到CString，可以利用CString::GetBuffer()函数来进行转换，道理一样.

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char* psz = "你们";

 string str( psz );