MFC_对话框之时间显示与计算器设计.doc

石家庄经济学院实 验 报 告学 院: 信息工程学院 专 业: 计算机科学与技术 信息工程学院计算机实验中心制Windows程序设计实验报告姓名 范坤鹤学号 409109070315日期实验室计算机软件技术实验 指导教师刘永伟设备编号实验题目实验9 对话框一、实验目的1. 掌握对话框类的定义及使用2. 掌握对话框的数据交换和检验2、 实验内容1. 编写一个基于对话框的程序，当用户点击对话框上的按钮时弹出一个模态对话框，显示的对话框中央显示出当前时间。程序界面如下图所示：Ctime 获得当前时间的类2. 试着编写一个可以完成计算器的基于对话框的应用程序，该应用程序具有“加”、“减”、“乘”、“除”的功能三、源代码及实验结果 1、用户点击对话框上的按钮时弹出一个模态对话框的源代码：void CMy4Dlg:OnButton1() / TODO: Add your control notification handler code hereCMyDialog dig;dig.DoModal();BOOL CMyDialog:OnInitDialog() CDialog:OnInitDialog();/ TODO: Add extra initialization hereCTime t=CTime:GetCurrentTime();time=t.Format( The current time is:n %Y-%m-%d %H:%M:%S);/time.Format(%d,t.GetYear();UpdateData(FALSE);return TRUE; / return TRUE unless you set the focus to a control / EXCEPTION: OCX Property Pages should return FALSE 2、用户点击对话框上的按钮时弹出一个模态对话框的结果：（图一）图一3、 计算器源代码class CMy2Dlg : public CDialog/ Constructionpublic:void Calc(int h);void OnNumBtn(int B);double AddDecimal(double btnum);int PointPosition;BOOL judge_firstNum;BOOL judge_first;int CALCU_CHAR;double num2;double num1;CMy2Dlg(CWnd* pParent = NULL);/ standard constructorBOOL CMy2Dlg:OnInitDialog()CDialog:OnInitDialog();/ Add About. menu item to system menu./ IDM_ABOUTBOX must be in the system command range.ASSERT(IDM_ABOUTBOX & 0xFFF0) = IDM_ABOUTBOX);ASSERT(IDM_ABOUTBOX AppendMenu(MF_SEPARATOR);pSysMenu-AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);/ Set the icon for this dialog. The framework does this automatically/ when the applications main window is not a dialogSetIcon(m_hIcon, TRUE);/ Set big iconSetIcon(m_hIcon, FALSE);/ Set small icon/ TODO: Add extra initialization herereturn TRUE; / return TRUE unless you set the focus to a controlvoid CMy2Dlg:OnSysCommand(UINT nID, LPARAM lParam)if (nID & 0xFFF0) = IDM_ABOUTBOX)CAboutDlg dlgAbout;dlgAbout.DoModal();elseCDialog:OnSysCommand(nID, lParam);/ If you add a minimize button to your dialog, you will need the code below/ to draw the icon. For MFC applications using the document/view model,/ this is automatically done for you by the framework.void CMy2Dlg:OnPaint() if (IsIconic()CPaintDC dc(this); / device context for paintingSendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);/ Center icon in client rectangleint cxIcon = GetSystemMetrics(SM_CXICON);int cyIcon = GetSystemMetrics(SM_CYICON);CRect rect;GetClientRect(&rect);int x = (rect.Width() - cxIcon + 1) / 2;int y = (rect.Height() - cyIcon + 1) / 2;/ Draw the icondc.DrawIcon(x, y, m_hIcon);elseCDialog:OnPaint();/ The system calls this to obtain the cursor to display while the user drags/ the minimized window.HCURSOR CMy2Dlg:OnQueryDragIcon()return (HCURSOR) m_hIcon;void CMy2Dlg:OnBtn0() / TODO: Add your control notification handler code hereOnNumBtn(0);void CMy2Dlg:OnBtn00() / TODO: Add your control notification handler code hereOnNumBtn(0);OnNumBtn(0);void CMy2Dlg:OnBtn7() / TODO: Add your control notification handler code hereOnNumBtn(7);void CMy2Dlg:OnBtn8() / TODO: Add your control notification handler code hereOnNumBtn(8);void CMy2Dlg:OnBtn9() / TODO: Add your control notification handler code hereOnNumBtn(9);void CMy2Dlg:OnCheng() / TODO: Add your control notification handler code hereCalc(IDC_CHENG);void CMy2Dlg:OnBtn4() / TODO: Add your control notification handler code hereOnNumBtn(4);void CMy2Dlg:OnBtn5() / TODO: Add your control notification handler code hereOnNumBtn(5);void CMy2Dlg:OnBtn6() / TODO: Add your control notification handler code hereOnNumBtn(6);void CMy2Dlg:OnChu() / TODO: Add your control notification handler code hereCalc(IDC_CHU);void CMy2Dlg:OnBtn1() / TODO: Add your control notification handler code hereOnNumBtn(1);void CMy2Dlg:OnBtn2() / TODO: Add your control notification handler code hereOnNumBtn(2);void CMy2Dlg:OnBtn3() / TODO: Add your control notification handler code hereOnNumBtn(3);void CMy2Dlg:OnJian() / TODO: Add your control notification handler code hereCalc(IDC_JIAN);void CMy2Dlg:OnBtnpoint() / TODO: Add your control notification handler code hereif (PointPosition = 0)PointPosition = 1;void CMy2Dlg:OnPlus() / TODO: Add your control notification handler code hereCalc(IDC_PLUS);void CMy2Dlg:OnBtnsign() / TODO: Add your control notification handler code hereUpdateData(TRUE);m_num = 0 - m_num;UpdateData(FALSE);void CMy2Dlg:OnOK() / TODO: Add extra validation hereUpdateData(TRUE);num2 = m_num;switch(CALCU_CHAR)case IDC_PLUS:num1 = num1 + num2;break;case IDC_JIAN:num1 = num1 - num2;break;case IDC_CHENG:num1 = num1 * num2;break;case IDC_CHU:num1 = num1 / num2;break;default:break;m_num = num1;UpdateData(FALSE);if (CALCU_CHAR = IDC_CHU & num2 = 0)SetDlgItemText(IDC_EDIT1,除数不能为0);num2 = 0;CALCU_CHAR = 0;judge_firstNum = true;judge_first = true;PointPosition = 0;/CDialog:OnOK();double CMy2Dlg:AddDecimal(double btnum)int i = PointPosition;while(i)btnum = btnum / 10;i-;PointPosition+;return btnum;void CMy2Dlg:OnNumBtn(int B)if (judge_firstNum)m_num = B;judge_firstNum = false;else if (PointPosition)/判断小数点是否出现,UpdateData(TRUE);m_num = m_num + AddDecimal(B);elseUpdateData(TRUE);m_num = m_num * 10 + B;char * buf = new char;itoa(B,buf,10); /把字符串buf转换为整数BUpdateData(FALSE);void CMy2Dlg:Calc(int h)if (judge_first)UpdateData(TRUE);num1 = m_num;elseOnOK();judge_first = false;judge_firstNum = true;PointPositio