c++中char*\wchar_t*\string\wstring之间的相互转换
2013-11-21 11:19
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在近期工作中调用厂家提供的sdk,其库、demo是用vs2008完成的,对接口的调用在参数上有些出入,需要转换
把在论坛中找到结果记录如下:
[cpp]
#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;
[cpp]
#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.
转自
灰常感谢
把在论坛中找到结果记录如下:
[cpp]
#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;
#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;
[cpp]
#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;
}
#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.
转自
灰常感谢
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