最近老是涉及到编码与解码的问题,GB2312转UTF-8,又或者UTF-8转GB2312,不管是在ASP中还是在VC中都遇到这样的问题,头痛..

无意中在CSDN闲逛发现了一个CString 转UTF-8的思路,现摘寻下来,免得到时又找不着了.

CString  UTF8Convert(CString  str,  int  sourceCodepage,  int  targetCodepage) 
{ 
int  len=str.GetLength(); 

int  unicodeLen=MultiByteToWideChar(sourceCodepage,0,str,-1,NULL,0); 

wchar_t            *  pUnicode; 
pUnicode=new  wchar_t[unicodeLen+1]; 

memset(pUnicode,0,(unicodeLen+1)*sizeof(wchar_t)); 


MultiByteToWideChar(sourceCodepage,0,str,-1,(LPWSTR)pUnicode,unicodeLen); 

BYTE  *  pTargetData; 
int  targetLen=WideCharToMultiByte(targetCodepage,0,(LPWSTR)pUnicode,-1,(char  *)pTargetData,0,NULL,NULL); 

pTargetData=new  BYTE[targetLen+1]; 
memset(pTargetData,0,targetLen+1); 

WideCharToMultiByte(targetCodepage,0,(LPWSTR)pUnicode,-1,(char  *)pTargetData,targetLen,NULL,NULL); 

CString  rt; 
rt.Format("%s",pTargetData); 

delete  pUnicode; 
delete  pTargetData; 
return  rt; 

} 

用法:

编码 
UTF8Convert(str,936,CP_UTF8); 
解码 
UTF8Convert(str,CP_UTF8,936);
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