最近遇到程序开启线程后，在主界面编辑框中切换输入法，程序就卡住，只有强制关闭

function TCFADODBStorage.OpenConnection: Boolean;

  //线程里打开ADOConnection,在XP下切换输入法程序会死掉
  //原因:ADO自动创建一个ADODB.AsyncEventMessenger窗口,然后会有一个对应的IME窗口,但线程里没有消息循环
  //     XP下输入法切换时会SendMessage给IME窗口并等待返回,IME窗口并不会处理消息,造成死锁
  //这个函数把线程里的IME窗口释放掉,切换输入法时就不会有消息过来了
  procedure _FreeIMEWindow;
  const
    IME_WINDOW_CLASS = ‘IME‘;
    IME_WINDOW_TEXT  = ‘Default IME‘;
  var
    h : HWND;
    pid : DWORD;
    dh : HWND;
  begin
    h :=  FindWindow(IME_WINDOW_CLASS, IME_WINDOW_TEXT);
    while IsWindow(h) do
    begin
      if GetWindowThreadProcessId(h, pid) = GetCurrentThreadId then
        dh  :=  h
      else
        dh  :=  0;
      h :=  FindWindowEx(0, h, IME_WINDOW_CLASS, IME_WINDOW_TEXT);
      if dh <> 0 then
        DestroyWindow(dh);
    end;
  end;

begin
  try
    FConnection.ConnectionString  :=  ConnectionString;
    FConnection.Connected :=  True;
    if GetCurrentThreadId <> Global.MainThreadID{全局的主线程ID,如果是主线程,不需要Free} then
      _FreeIMEWindow;
  except on E: Exception do
    FLastErrorMessage :=  e.Message;
  end;
  Result  :=  FConnection.Connected;
end;