vc6.0中用MFC编写计算器代码.doc

/ CKcalculateDlg.cpp : implementation file/#include stdafx.h#include math.h#include CKcalculate.h#include CKcalculateDlg.h#ifdef _DEBUG#define new DEBUG_NEW#undef THIS_FILEstatic char THIS_FILE = _FILE_;#endif/double m_first;/存储一次运算的第一个操作数及一次运算的结果/ double m_second; /存储一次运算的第二个操作数/CString m_operator;/存储运算符/double m_coff;/存储小数点的系数权值/ CAboutDlg dialog used for App About/class CAboutDlg : public CDialogpublic:CAboutDlg();/ Dialog Data/AFX_DATA(CAboutDlg)enum IDD = IDD_ABOUTBOX ;/AFX_DATA/ ClassWizard generated virtual function overrides/AFX_VIRTUAL(CAboutDlg)protected:virtual void DoDataExchange(CDataExchange* pDX); / DDX/DDV support/AFX_VIRTUAL/ Implementationprotected:/AFX_MSG(CAboutDlg)/AFX_MSGDECLARE_MESSAGE_MAP();CAboutDlg:CAboutDlg() : CDialog(CAboutDlg:IDD)/AFX_DATA_INIT(CAboutDlg)/AFX_DATA_INITvoid CAboutDlg:DoDataExchange(CDataExchange* pDX)CDialog:DoDataExchange(pDX);/AFX_DATA_MAP(CAboutDlg)/AFX_DATA_MAPBEGIN_MESSAGE_MAP(CAboutDlg, CDialog)/AFX_MSG_MAP(CAboutDlg)/ No message handlers/AFX_MSG_MAPEND_MESSAGE_MAP()/ CCKcalculateDlg dialogCCKcalculateDlg:CCKcalculateDlg(CWnd* pParent /*=NULL*/): CDialog(CCKcalculateDlg:IDD, pParent)/void UpdateDisplay(double);/void Calculate(void);/AFX_DATA_INIT(CCKcalculateDlg)/isXdeY=false;m_display = _T();m_PI=3.14159265358979323846;m_first=0.0;m_second=0.0;m_operator=_T(+);m_coff=0;m_display=_T(0.0);/AFX_DATA_INIT/ Note that LoadIcon does not require a subsequent DestroyIcon in Win32m_hIcon = AfxGetApp()-LoadIcon(IDR_MAINFRAME);void CCKcalculateDlg:DoDataExchange(CDataExchange* pDX)CDialog:DoDataExchange(pDX);/AFX_DATA_MAP(CCKcalculateDlg)DDX_Text(pDX, IDC_DISPLAY, m_display);/AFX_DATA_MAPBEGIN_MESSAGE_MAP(CCKcalculateDlg, CDialog)/AFX_MSG_MAP(CCKcalculateDlg)ON_WM_SYSCOMMAND()ON_WM_PAINT()ON_WM_QUERYDRAGICON()ON_BN_CLICKED(IDC_BUTTON0, OnButton0)ON_BN_CLICKED(IDC_BUTTON1, OnButton1)ON_BN_CLICKED(IDC_BUTTON2, OnButton2)ON_BN_CLICKED(IDC_BUTTON3, OnButton3)ON_BN_CLICKED(IDC_BUTTON4, OnButton4)ON_BN_CLICKED(IDC_BUTTON5, OnButton5)ON_BN_CLICKED(IDC_BUTTON6, OnButton6)ON_BN_CLICKED(IDC_BUTTON7, OnButton7)ON_BN_CLICKED(IDC_BUTTON8, OnButton8)ON_BN_CLICKED(IDC_BUTTON9, OnButton9)ON_BN_CLICKED(IDC_BUTTON_ADD, OnButtonAdd)ON_BN_CLICKED(IDC_BUTTON_MINUS, OnButtonMinus)ON_BN_CLICKED(IDC_BUTTON_MUTIPLY, OnButtonMutiply)ON_BN_CLICKED(IDC_BUTTON_DIV, OnButtonDiv)ON_BN_CLICKED(IDC_BUTTON_SIGH, OnButtonSigh)ON_BN_CLICKED(IDC_BUTTON_POINT, OnButtonPoint)ON_BN_CLICKED(IDC_BUTTON_CLEAR, OnButtonClear)ON_BN_CLICKED(IDC_BUTTON_SQRT, OnButtonSqrt)ON_BN_CLICKED(IDC_BUTTON_RECI, OnButtonReci)ON_BN_CLICKED(IDC_BUTTON_EQUAL, OnButtonEqual)ON_BN_CLICKED(IDC_BUTTON_SIN, OnButtonSin)ON_BN_CLICKED(IDC_BUTTON_COS, OnButtonCos)ON_BN_CLICKED(IDC_BUTTON_LOG, OnButtonLog)ON_BN_CLICKED(IDC_BUTTON_XDEY, OnButtonXdeY)/AFX_MSG_MAPEND_MESSAGE_MAP()/ CCKcalculateDlg message handlers/BOOL CCKcalculateDlg: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 SetIcon(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 CCKcalculateDlg: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 CCKcalculateDlg: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 CCKcalculateDlg:OnQueryDragIcon()return (HCURSOR) m_hIcon;/按键代码/void CCKcalculateDlg:OnButton0() / TODO: Add your control notification handler code hereonButtonN(0);void CCKcalculateDlg:OnButton1() / TODO: Add your control notification handler code hereonButtonN(1);void CCKcalculateDlg:OnButton2() / TODO: Add your control notification handler code hereonButtonN(2);void CCKcalculateDlg:OnButton3() / TODO: Add your control notification handler code hereonButtonN(3);void CCKcalculateDlg:OnButton4() / TODO: Add your control notification handler code hereonButtonN(4);void CCKcalculateDlg:OnButton5() / TODO: Add your control notification handler code hereonButtonN(5);void CCKcalculateDlg:OnButton6() / TODO: Add your control notification handler code hereonButtonN(6);void CCKcalculateDlg:OnButton7() / TODO: Add your control notification handler code hereonButtonN(7);void CCKcalculateDlg:OnButton8() / TODO: Add your control notification handler code hereonButtonN(8);void CCKcalculateDlg:OnButton9() / TODO: Add your control notification handler code hereonButtonN(9);/计算按键代码/void CCKcalculateDlg:OnButtonAdd() / TODO: Add your control notification handler code hereCalculate();m_operator=+;void CCKcalculateDlg:OnButtonMinus() / TODO: Add your control notification handler code hereCalculate();m_operator=-;void CCKcalculateDlg:OnButtonMutiply() / TODO: Add your control notification handler code hereCalculate();m_operator=*;void CCKcalculateDlg:OnButtonDiv() / TODO: Add your control notification handler code hereCalculate();m_operator=/;void CCKcalculateDlg:OnButtonSigh() / TODO: Add your control notification handler code herem_second=-m_second; UpdateDisplay(m_second);void CCKcalculateDlg:OnButtonPoint() / TODO: Add your control notification handler code herem_coff =0.1;void CCKcalculateDlg:OnButtonClear() / TODO: Add your control notification handler code herem_first=0.0;m_second=0.0;m_operator=+;m_coff = 1.0;UpdateDisplay(0.0);void CCKcalculateDlg:OnButtonSqrt() / TODO: Add your control notification handler code hereif( m_second=0 )m_first=sqrt(m_first);UpdateDisplay(m_first);else m_second=sqrt(m_second);UpdateDisplay(m_second); void CCKcalculateDlg:OnButtonReci() / TODO: Add your control notification handler code hereif( fabs(m_second ) 0.000001 & fabs( m_first )0.000001)m_display=除数不能为零;UpdateDisplay(false);return;if( fabs(m_second ) 0.000001)m_first=1.0/m_first;UpdateDisplay(m_first);elsem_second=1.0/m_second;UpdateDisplay(m_second);void CCKcalculateDlg:OnButtonEqual() / TODO: Add your control notification handler code hereXdeY();Calculate();void CCKcalculateDlg:UpdateDisplay(double ck)m_display.Format(_T(%f),ck);int i=m_display.GetLength();/格式化输出,将输出结果后的零截去while(m_display.GetAt(i-1)=0) m_display.Delete(i-1,1);i-;/更新编辑框变量m_displayUpdateData(false); void CCKcalculateDlg:Calculate(void)/将前一次数据与当前数据进行运算，作为下次的第一操作数，并在编辑框显示switch(m_operator.GetAt(0)case +: m_first+=m_second;break;case -: m_first-=m_second;break;case *: m_first*=m_second;break;case /:if( fabs(m_second ) 1000#pragma once#endif / _MSC_VER 1000/ CCKcalculateDlg dialogclass CCKcalculateDlg : public CDialog / Constructionpublic:void XdeY(void);bool isXdeY;double temp;double m_PI;void onButtonN(int n);void UpdateDisplay(double ck);void Calculate();CCKcalculateDlg(CWnd* pParent = NULL);/ standard constructor/ Dialog Data/AFX_DATA(CCKcalculateDlg)enum IDD = IDD_CKCALCULATE_DIALOG ;CStringm_display;/AFX_DATAdouble m_first;/存储一次运算的第一个操作数及一次运算的结果double m_second;/存储一次运算的第二个操作数CString m_operator;/存储运算符double m_coff;/存储小数点的系数权值/ ClassWizard generated virtual function overrides/ AFX_VIRTUAL(CCKcalculateDlg)protected:virtual void DoDataExchange(CDataExchange* pDX);/ DDX/DDV support/AFX_VIRTUAL/ Implementationprotected:HICON m_hIcon;/ Generated message map functions/AFX_MSG(CCKcalculateDlg)virtual BOOL OnInitDialog();afx_msg void OnSysCommand(UINT nID, LPARAM lParam);afx_msg void OnPai