logfile msg: get method and class names

Hi,

I`ve a logfile which should contain all errors which can occur in the
programm. My document-class (SDI application) will contain a member-
variable of my logfile-class. If a error occurred in a different
thread than the mainthread I will write a PostMessage() to the window
I`ve installed for the document.

It would be great if the logfile will contain the information: class-
name, method-name, function-call with the specific GetLastError() if
available. Are there any methods to get the class name as well as the
method name where the error occurred? So that I immediately know where
the error occured if I see the logfile.

void MyThreadClass::MyMethod()
{

   int rtn = Methodcall()

   if(rtn != SUCCESS)
  { /* failed -> send msg to logfile */
     DWORD err = ::GetLastError();

     CString *perr = new CString();
     perr->Format(_T("%s | %s | %s - %s"), classname, methodname,
call, err);
    /* example:
        perr ("MyThreadClass | MyMethod | Methodcall -
20(GetLastError) ")
   */
      if(m_wnd)
          m_wnd->PostMessage(UWM_LOGFILE_MSG, (WPARAM)perr,
(LPARAM)0);
   }
}

Another method is to install thousands of defines (each possible error
will get one of these defines).... but that`s not really a good idea,
because it`s hard to update....

Are there any other options to determine where the error (located in
the logfile) occurred?

best regards
Hans