MFC实践基于MFC向导C++制作计算器（附文件）

 // MFCApplication1Dlg.cpp: 实现文件 // #include "pch.h" #include "framework.h" #include "MFCApplication1.h" #include "MFCApplication1Dlg.h" #include "afxdialogex.h" #ifdef _DEBUG #define new DEBUG_NEW #endif // CMFCApplication1Dlg 对话框 CMFCApplication1Dlg::CMFCApplication1Dlg(CWnd* pParent /*=nullptr*/) : CDialogEx(IDD_MFCAPPLICATION1_DIALOG, pParent) , m_data(_T("0")) { m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); } void CMFCApplication1Dlg::DoDataExchange(CDataExchange* pDX) { CDialogEx::DoDataExchange(pDX); DDX_Text(pDX, IDC_EDIT2, m_data); } BEGIN_MESSAGE_MAP(CMFCApplication1Dlg, CDialogEx) ON_WM_PAINT() ON_WM_QUERYDRAGICON() ON_BN_CLICKED(IDC_BNUM1, &CMFCApplication1Dlg::OnBnClickedBnum1) ON_BN_CLICKED(IDC_BNUM2, &CMFCApplication1Dlg::OnBnClickedBnum2) ON_BN_CLICKED(IDC_BNUM3, &CMFCApplication1Dlg::OnBnClickedBnum3) ON_BN_CLICKED(IDC_BNUM4, &CMFCApplication1Dlg::OnBnClickedBnum4) ON_BN_CLICKED(IDC_BNUM5, &CMFCApplication1Dlg::OnBnClickedBnum5) ON_BN_CLICKED(IDC_BNUM6, &CMFCApplication1Dlg::OnBnClickedBnum6) ON_BN_CLICKED(IDC_BNUM7, &CMFCApplication1Dlg::OnBnClickedBnum7) ON_BN_CLICKED(IDC_BNUM28, &CMFCApplication1Dlg::OnBnClickedBnum28) ON_BN_CLICKED(IDC_BNUM9, &CMFCApplication1Dlg::OnBnClickedBnum9) ON_BN_CLICKED(IDC_BNUM0, &CMFCApplication1Dlg::OnBnClickedBnum0) ON_BN_CLICKED(IDC_FEATURE2, &CMFCApplication1Dlg::OnBnClickedFeature2) ON_BN_CLICKED(IDC_ADD, &CMFCApplication1Dlg::OnBnClickedAdd) ON_BN_CLICKED(IDC_SUB, &CMFCApplication1Dlg::OnBnClickedSub) ON_BN_CLICKED(IDC_MUL, &CMFCApplication1Dlg::OnBnClickedMul) ON_BN_CLICKED(IDC_DIV, &CMFCApplication1Dlg::OnBnClickedDiv) ON_BN_CLICKED(IDC_DEL, &CMFCApplication1Dlg::OnBnClickedDel) ON_BN_CLICKED(IDC_C, &CMFCApplication1Dlg::OnBnClickedC) ON_BN_CLICKED(IDC_CE, &CMFCApplication1Dlg::OnBnClickedCe) ON_BN_CLICKED(IDC_EQUAL, &CMFCApplication1Dlg::OnBnClickedEqual) ON_BN_CLICKED(IDC_FEATURE6, &CMFCApplication1Dlg::OnBnClickedFeature6) ON_BN_CLICKED(IDC_FEATURE3, &CMFCApplication1Dlg::OnBnClickedFeature3) ON_BN_CLICKED(IDC_FEATURE4, &CMFCApplication1Dlg::OnBnClickedFeature4) ON_BN_CLICKED(IDC_FEATURE5, &CMFCApplication1Dlg::OnBnClickedFeature5) ON_BN_CLICKED(IDC_FEATURE1, &CMFCApplication1Dlg::OnBnClickedFeature1) END_MESSAGE_MAP() // CMFCApplication1Dlg 消息处理程序 BOOL CMFCApplication1Dlg::OnInitDialog() { CDialogEx::OnInitDialog(); // 设置此对话框的图标。 当应用程序主窗口不是对话框时，框架将自动 // 执行此操作 SetIcon(m_hIcon, TRUE); // 设置大图标 SetIcon(m_hIcon, FALSE); // 设置小图标 // TODO: 在此添加额外的初始化代码 // 设置对话框的父窗口为NULL，使其独立存在 //----------------------------------------------------- SetParent(NULL); CRgn m_rgn; RECT rc; GetWindowRect(&rc); // 有边框对话框 m_rgn.CreateRoundRectRgn(rc.left, rc.top, rc.right, rc.bottom, 40, 40); // 矩形圆角 SetWindowRgn(m_rgn, TRUE); //--------------------------------------------------- //-------------------------------------------------------------------- int nDstWidth = 1280; int nDstHeight = 900; //得到显示器大小 int cx = GetSystemMetrics(SM_CXSCREEN); int cy = GetSystemMetrics(SM_CYSCREEN); //再用MoveWindow CRect rcTemp; rcTemp.TopLeft() = CPoint(cx / 2 - nDstWidth / 2, cy / 2 - nDstHeight / 2); rcTemp.BottomRight() = CPoint(cx / 2 + nDstWidth / 2, cy / 2 + nDstHeight / 2); MoveWindow(&rcTemp); //-------------------------------------------------------------------- return TRUE; // 除非将焦点设置到控件，否则返回 TRUE } // 如果向对话框添加最小化按钮，则需要下面的代码 // 来绘制该图标。 对于使用文档/视图模型的 MFC 应用程序， // 这将由框架自动完成。 void CMFCApplication1Dlg::OnPaint() { if (IsIconic()) { CPaintDC dc(this); // 用于绘制的设备上下文 SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0); // 使图标在工作区矩形中居中 int 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; // 绘制图标 dc.DrawIcon(x, y, m_hIcon); } else { //———————————————————————————————— CPaintDC dc(this); // 用于绘制的设备上下文 CRect rect; GetClientRect(rect); dc.FillSolidRect(rect, RGB(235, 246, 249)); //设置为蓝色背景 CDialogEx::OnPaint(); //----------------------------------------------------------------- } } //当用户拖动最小化窗口时系统调用此函数取得光标 //显示。 HCURSOR CMFCApplication1Dlg::OnQueryDragIcon() { return static_cast<HCURSOR>(m_hIcon); } CString a[1000] = {0}; int i = 1; int pd = 0;//用于判断每个数只含一个小数点 int f = 0;//用于加减乘除不能连用 void CMFCApplication1Dlg::OnBnClickedBnum1() { // TODO: 在此添加控件通知处理程序代码 UpdateData(); if (m_data == "0") { i--; a[i] = "1"; m_data = a[i]; } else { a[i] = "1"; m_data += a[i]; } f = 0; i++; UpdateData(false); } void CMFCApplication1Dlg::OnBnClickedBnum2() { // TODO: 在此添加控件通知处理程序代码 UpdateData(); if (m_data == "0") { i--; a[i] = "2"; m_data = a[i]; } else { a[i] = "2"; m_data += a[i]; } f = 0; i++; UpdateData(false); } void CMFCApplication1Dlg::OnBnClickedBnum3() { // TODO: 在此添加控件通知处理程序代码 UpdateData(); if (m_data == "0") { i--; a[i] = "3"; m_data = a[i]; } else { a[i] = "3"; m_data += a[i]; } f = 0; i++; UpdateData(false); } void CMFCApplication1Dlg::OnBnClickedBnum4() { // TODO: 在此添加控件通知处理程序代码 UpdateData(); if (m_data == "0") { i--; a[i] = "4"; m_data = a[i]; } else { a[i] = "4"; m_data += a[i]; } f = 0; i++; UpdateData(false); } void CMFCApplication1Dlg::OnBnClickedBnum5() { // TODO: 在此添加控件通知处理程序代码 UpdateData(); if (m_data == "0") { i--; a[i] = "5"; m_data = a[i]; } else { a[i] = "5"; m_data += a[i]; } f = 0; i++; UpdateData(false); } void CMFCApplication1Dlg::OnBnClickedBnum6() { // TODO: 在此添加控件通知处理程序代码 UpdateData(); if (m_data == "0") { i--; a[i] = "6"; m_data = a[i]; } else { a[i] = "6"; m_data += a[i]; } f = 0; i++; UpdateData(false); } void CMFCApplication1Dlg::OnBnClickedBnum7() { // TODO: 在此添加控件通知处理程序代码 UpdateData(); if (m_data == "0") { i--; a[i] = "7"; m_data = a[i]; } else { a[i] = "7"; m_data += a[i]; } f = 0; i++; UpdateData(false); } void CMFCApplication1Dlg::OnBnClickedBnum28() { // TODO: 在此添加控件通知处理程序代码 UpdateData(); if (m_data == "0") { i--; a[i] = "8"; m_data = a[i]; } else { a[i] = "8"; m_data += a[i]; } f = 0; i++; UpdateData(false); } void CMFCApplication1Dlg::OnBnClickedBnum9() { // TODO: 在此添加控件通知处理程序代码 UpdateData(); if (m_data == "0") { i--; a[i] = "9"; m_data = a[i]; } else { a[i] = "9"; m_data += a[i]; } f = 0; i++; UpdateData(false); } void CMFCApplication1Dlg::OnBnClickedBnum0() { // TODO: 在此添加控件通知处理程序代码 UpdateData(); if (m_data == "0") { i--; a[i] = "0"; m_data = a[i]; } else { a[i] = "0"; m_data += a[i]; } f = 0; i++; UpdateData(false); } void CMFCApplication1Dlg::OnBnClickedFe