初学者问题：怎样将BSTR类型转化为CString类型？

Question

_variant_t TheValue; 
CString tmp="";
tmp=(char*)(_bstr_t)TheValue;

Answer 1

BSTR bstrstr;//这是你要转换的BSTR变量
LPCOLESTR szFromBSTR;
szFromBSTR=bstrstr;
int nLen;
nLen=WideCharToMultiByte(CP_ACP,0,szFromBSTR,-1,NULL,NULL,NULL,NULL)
LPSTR szNewStdString;//这是转换的结果变量
szNewStdString=(char)malloc(nLen);
WideCharToMultiByte(CP_ACP,0,szFromBSTR,-1,szNewStrString,nLen,NULL,NULL);
//就这样. 

Answer 2

CString BSTR2CString(BSTR str)
{
  _bstr_t strTemp(str,TRUE);
  CString strRet = strTemp;
  return strRet;
}