Re: AfxBeginThread in mainframe.c???

thanks for your good answers!

Now every thread will be closed - OnTermThread will be called only
once for each thread.

void CMainFrame::OnClose()
{
  if(ClosePending)
        return;

    if(m_threadIDs.GetSize() > 0)
    { /* defer shutdown */
        for(UINT_PTR i = 0; i < m_threadIDs.GetSize(); i++)
       if(::PostThreadMessage(m_threadIDs[i], m_threadMsgIDs[i], 0,
0))
      { /* failed */

     }

   ClosePending = TRUE;
   return;

   } /* defer shutdown */
     //.... normal OnClose code here

   CFrameWnd::OnClose();
}

For some thread-ids the PostThreadMessage will return an error ->
(GetLastError()) error-code is 0; Do you have some more information
about this error-code? If I do nothing in the error condition, all
PostThreadMessage will receive their message-functions
(OnTermThread).

Another sad thing:
Unfortunately, I`ve some memory leaks in the threads; but I don`t know
why. Do I have to close any additional things beside the serial-port?

class CSerialWrite :
    public CWinThread
{
public:
    CSerialWrite(void);
    ~CSerialWrite(void);

    void SetTarget(CWnd * w) { target = w; }
    void SetHandle(FT_HANDLE w) { ftHandle = w; }
    void SetPort(UINT p) { port = p; }

private:
    // Target of messages which are posted
    CWnd * target;
    UINT port;
    FT_HANDLE ftHandle;

protected:

    DECLARE_DYNCREATE(CSerialWrite)
    virtual int ExitInstance();
    virtual BOOL InitInstance();

    afx_msg void OnTermThread(WPARAM, LPARAM);

    DECLARE_MESSAGE_MAP()
};

void CSerialWrite::OnTermThread(WPARAM, LPARAM)
 {

  ASSERT(ftHandle != NULL);
  ASSERT(target != NULL);

  //close serial port
  FT_W32_CloseHandle(ftHandle);

  ::PostQuitMessage(0);
}

best regards
Hans