Hi

I can't send COM DLL's Bstr Type with c++

My Code is below(C#)
---------------------------------------------------------
//define Unmanaged Type
[MarshalAs(UnmanagedType.BStr)]
 public String m_Bstr;

//an ellipsis

//Call

m_Bstr="test";

_Wrapper.VR_CreateTextObj(m_Bstr); <- this method receive BSTR type

------------------------------------------------------------

//a Result

m_Bstr="t"<--only 1st position of value sent.

If calling method with BSTR  type parameter, value is wrong, only 1st
position of value sent.

-----------------------------------------------------------------------

VR_CreateTextObj method prototype..(made from c++)

------------------------

CreateTextObj(BSTR strText)

{

   CString strLine;
    strLine.Format("%s", strText);
    AfxMessageBox(strLine);

}

advice me

thank you..