Re: c++ event sink

are you meaning I should create a new thread from the primary thread
currently running?

then I pass a pointer of status to that thread like -

==============================
int * status;

// a new thread get initialized and pass a pointer of the status
// to the new thread
ThreadX * o1 = new ThreadX( &status );

// create the thread using _beginthreadex()
hth1 = (HANDLE)_beginthreadex(
NULL, // security
0, // stack size
 ThreadX::ThreadStaticEntryPoint,
o1, // arg list
CREATE_SUSPENDED, // so we can later call ResumeThread()
&uiThread1ID
 );

// after created the thread, primary thread continue execute
// primary thread keeps checking the status
// (integer value 1 = finish, integer value 0 = not finish)
 

==============================

ThreadX::ThreadX( int * status )
{
    // if the XML thread finish loading data
    // may be after 10 min, the status flag is set to 1 = finished
    currentstatus = status ;
}