BSTR 与 LPSTR相互转换??

[liutaoxwl]

BSTR 与 LPSTR相互转换??

[天限天空]

BSTR("asdfas")

OLE2T
T2OLE

[Analyst]

LPSTR a="laksdf";
BSTR var = CString(a).AllocSysString();

[bluebohe]

char *str;
VARIANT var=m_pRecordSet->GetCollect("名称");
if(var.VT!=NULL)
{
str=(LPSTR)(LPCTSTR)(_bstr_t)var;
}

[bluebohe]

char *str=NULL;
VARIANT var=m_pRecordSet->GetCollect("名称");
if(var.VT!=NULL)
{
str=(LPSTR)(LPCTSTR)(_bstr_t)var;
}
注意var改变后str的值无效

BSTR var("adfjasd");
str=(LPSTR)(LPCTSTR)(_bstr_t)var;

[LeeZi]

BSTR Name = L"Hello World!";
_bstr_t Tmp = Name;
char* szName = Tmp;

[bcpl]

用CString比较方便
// CString->BSTR:

CString sTemp;
BSTR bstr = sTemp.AllocSysString();

// BSTR->CString：

BSTR bstr = ...;
CString sTemp(bstr);

[liutaoxwl]

LPSTR a="laksdf";
BSTR var;
如何将a的支付给var?