MFC隐藏主窗口

将
CMFCApplication1Dlg dlg;
m_pMainWnd = &dlg;
INT_PTR nResponse = dlg.DoModal();

　　替换为

CMFCApplication1Dlg dlg;
m_pMainWnd = &dlg;
//INT_PTR nResponse = dlg.DoModal();
INT_PTR nResponse = dlg.Create(CMFCApplication1Dlg::IDD);
dlg.ShowWindow(SW_HIDE);
dlg.RunModalLoop();