FindWindow(NULL,_T("加载监视器"));和Error: CWinThread.../...0xC0000005: Access Violation.走一起了，呵呵

第一：在线程内核函数的某一个子操作函数中，调用了：
HWND hwndJZJSQ = FindWindow(NULL,_T("加载监视器"));
if( IsWindow(hwndJZJSQ) )  PostMessage(hwndJZJSQ, WM_CLOSE, 0, 0);
发现：无论“加载监视器”有无，IsWindows均成立，hwndJZJSQ均有值

第二：在执行接下来的一个子操作函数时，Debug下会引起
Error: CWinThread::PumpMessage called when not permitted.
First-chance exception in DCMS3000Main.exe (MFC42D.DLL): 0xC0000005: Access Violation.
Release版本下，会引起崩溃

Debug下一般都会指向该函数的某一行（GetMessage一般都是返回TRUE的）：需要注意的是，下述调试点一般会发现：m_msgCur.msg = 0x10; //也即WM_CLOSE消息，为什么它处理不了？？？
BOOL CWinThread::PumpMessage()
{
 ASSERT_VALID(this);

 if (!::GetMessage(&m_msgCur, NULL, NULL, NULL))
 {
#ifdef _DEBUG
  if (afxTraceFlags & traceAppMsg)
   TRACE0("CWinThread::PumpMessage - Received WM_QUIT.\n");
  m_nDisablePumpCount++; // application must die
   // Note: prevents calling message loop things in 'ExitInstance'
   // will never be decremented
#endif
  return FALSE;
 }

#ifdef _DEBUG
 if (m_nDisablePumpCount != 0)
 {
  TRACE0("Error: CWinThread::PumpMessage called when not permitted.\n");
  ASSERT(FALSE);
 }
#endif

#ifdef _DEBUG
 if (afxTraceFlags & traceAppMsg)
  _AfxTraceMsg(_T("PumpMessage"), &m_msgCur);
#endif

 // process this message

 if (m_msgCur.message != WM_KICKIDLE && !PreTranslateMessage(&m_msgCur))
 {
  ::TranslateMessage(&m_msgCur);
  ::DispatchMessage(&m_msgCur);
 }
 return TRUE;
}                                                                                                                                                                                                                                  第三：调试详情