BOOL CDlgTestApp::InitInstance()
{AfxEnableControlContainer();// Standard initialization// If you are not using these features and wish to reduce the size//  of your final executable, you should remove from the following//  the specific initialization routines you do not need.

#ifdef _AFXDLLEnable3dControls();                     // Call this when using MFC in a shared DLL
#elseEnable3dControlsStatic();      // Call this when linking to MFC statically
#endif// Change the registry key under which our settings are stored.// TODO: You should modify this string to be something appropriate// such as the name of your company or organization.SetRegistryKey(_T("Local AppWizard-Generated Applications"));LoadStdProfileSettings();  // Load standard INI file options (including MRU)// Register the application's document templates.  Document templates//  serve as the connection between documents, frame windows and views.

CLogsys  TestDlg;
if(TestDlg.DoModal()==IDOK)   // 单击Ok后就开始初始化程序实例
{CSingleDocTemplate* pDocTemplate;pDocTemplate = new CSingleDocTemplate(IDR_MAINFRAME,RUNTIME_CLASS(CDlgTestDoc),RUNTIME_CLASS(CMainFrame),       // main SDI frame window
              RUNTIME_CLASS(CDlgTestView));AddDocTemplate(pDocTemplate);// Parse command line for standard shell commands, DDE, file open
       CCommandLineInfo cmdInfo;ParseCommandLine(cmdInfo);// Dispatch commands specified on the command lineif (!ProcessShellCommand(cmdInfo))return FALSE;// The one and only window has been initialized, so show and update it.m_pMainWnd->ShowWindow(SW_SHOW);m_pMainWnd->UpdateWindow();return TRUE;
}
else    // 假如单击了CANCEL按钮就直接退出return FALSE;}

void CLogsys::OnOK()
{// TODO: Add extra validation here
UpdateData(TRUE);  // 获取输入数据
if(m_strUser=="Admin"&&m_strPwd=="1234")
{
CDialog::OnOK();  // 假如用户名和密码正确，就关闭对话框
}
/*假如用户名或密码错误，且还未超出登陆次数，就进行提示*/
if((m_strUser!="Admin"||m_strPwd!="1234")&&(m_Time<3)) //假如密码和用户名正确
   {
AfxMessageBox("用户名或密码不正确");
m_Time++;}
/*假如超出登陆次数，提示并退出系统*/
if(m_Time>2){
AfxMessageBox("登陆错误次数超过3次");
PostQuitMessage(0);}
}