Как скрыть диалоговое окно при запуске?

BOOL CMy3App::InitInstance()
{
    CMy3Dlg dlg;
    m_pMainWnd = &dlg;
    int nResponse = dlg.DoModal();
    dlg.ShowWindow(SW_HIDE);
    if (nResponse == IDOK)
    {
        // TODO: Place code here to handle when the dialog is
        //  dismissed with OK
    }
    else if (nResponse == IDCANCEL)
    {
        // TODO: Place code here to handle when the dialog is
        //  dismissed with Cancel
    }

    // Since the dialog has been closed, return FALSE so that we exit the
    //  application, rather than start the application's message pump.
    return FALSE;
}