void CServerTestDlg::OnOk2() {m_WndMonitor.Create(IDD_SUBMONITOR );m_WndMonitor.SetWindowPos(NULL, 0, 0, 500, 500, SWP_NOZORDER);m_WndMonitor.ShowWindow(SW_SHOW);SetFocus();//就是加个获取焦点的函数试试,让主窗口获取焦点SetTimer(0,400,NULL); }