C++中char*\wchar_t*\string\wstring之間的相互轉換:
- #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()函數來進行轉換,道理一樣.