unicode

CString strMess = xml.GetData();
wchar_t*   szUnicodeString; 
szUnicodeString=strMess.AllocSysString();
UINT nCodePage = 936; //GB2312
int nLength=WideCharToMultiByte(nCodePage,0,szUnicodeString,-1,NULL,0,NULL,NULL);
   char* pBuffer=new char[nLength+1];
   WideCharToMultiByte(nCodePage,0,szUnicodeString,-1,pBuffer,nLength,NULL,NULL);
   pBuffer[nLength]=0;

 

函数:
char* UnicodeToGB2312(const wchar_t* szUnicodeString)
  {  
 /*char   *buffer   ;  
 buffer   =   new   char[sizeof(WCHAR)];  
 WideCharToMultiByte(CP_ACP,NULL,&uData,1,buffer,sizeof(WCHAR),NULL,NULL);  
 return   buffer;   */
 UINT nCodePage = 936; //GB2312
 int nLength=WideCharToMultiByte(nCodePage,0,szUnicodeString,-1,NULL,0,NULL,NULL);
 char* pBuffer=new char[nLength+1];
 WideCharToMultiByte(nCodePage,0,szUnicodeString,-1,pBuffer,nLength,NULL,NULL);
 pBuffer[nLength]=0;
 return pBuffer;
  }