字符串编码转换

#ifndef __22_WTA_ATW_20141217_LIULEI_H__
#define __22_WTA_ATW_20141217_LIULEI_H__
#pragma once


class C22
{
public:
C22(const char *srcBuf,UINT sDestCodePage = CP_ACP)
{
m_isNewWchar = true;
m_isNewchar = false;
m_wszDest = NULL;
m_szDest = (char *)srcBuf;
if(srcBuf == NULL) return;
int nNeedNum = MultiByteToWideChar(sDestCodePage,0,srcBuf,-1,NULL,0);
m_wszDest = new wchar_t[nNeedNum + 1];
MultiByteToWideChar(sDestCodePage,0,srcBuf,-1,m_wszDest,nNeedNum);
m_wszDest[nNeedNum] = '\0';


}


C22(const wchar_t *srcBuf,UINT srcCodePage = CP_ACP)
{
m_isNewWchar = false;
m_isNewchar = true;
m_szDest = NULL;
m_wszDest = (wchar_t *)srcBuf;
if(srcBuf == NULL) return;
int nNeedNum = WideCharToMultiByte(srcCodePage,0,srcBuf,-1,NULL,0,NULL,NULL);
m_szDest = new char[nNeedNum + 1];
WideCharToMultiByte(srcCodePage,0,srcBuf,-1,m_szDest,nNeedNum,NULL,NULL);
m_szDest[nNeedNum] = '\0';


}


operator wchar_t * ()
{
return m_wszDest;
}


operator char * ()
{
return m_szDest;
}


~C22()
{
if(m_isNewWchar)
{
delete []m_wszDest;
m_wszDest = NULL;
}


if(m_isNewchar)
{
delete []m_szDest;
m_szDest = NULL;
}
}
private:
wchar_t *m_wszDest;
char *m_szDest;
bool m_isNewWchar;
bool m_isNewchar;
};

#endif

使用的时候请不要使用 C22匿名对象 eg: char *dest=C22(src)!

正确使用:C22 obj(src);

char *dest = obj;