第9周-窗口程序-小型计算器

最近对窗口程序很感兴趣哈哈哈，然后就试着做了一个小型计算器。

完整代码如下：

/*    *Copyright (c)2015,烟台大学计算机与控制工程学院    *All rights reserved.    *文件名称：Cal.cpp    *作    者：单昕昕    *完成日期：2015年5月10日    *版 本 号：v1.0        */ // addDlg.cpp : implementation file//#include "stdafx.h"#include "add.h"#include "addDlg.h"#include "afxwin.h" #ifdef _DEBUG#define new DEBUG_NEW#undef THIS_FILEstatic char THIS_FILE[] = __FILE__;#endif/////////////////////////////////////////////////////////////////////////////// CAboutDlg dialog used for App Aboutclass CAboutDlg : public CDialog{public: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_INIT}void CAboutDlg::DoDataExchange(CDataExchange* pDX){CDialog::DoDataExchange(pDX);//{{AFX_DATA_MAP(CAboutDlg)//}}AFX_DATA_MAP}BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)//{{AFX_MSG_MAP(CAboutDlg)// No message handlers//}}AFX_MSG_MAPEND_MESSAGE_MAP()/////////////////////////////////////////////////////////////////////////////// CAddDlg dialogCAddDlg::CAddDlg(CWnd* pParent /*=NULL*/): CDialog(CAddDlg::IDD, pParent){//{{AFX_DATA_INIT(CAddDlg)m_bAtOnce = FALSE;m_fAdd1 = 0.0;m_fAdd2 = 0.0;m_fResult = 0.0;m_strOpr = _T("+");m_dOpr = -1;//}}AFX_DATA_INIT// Note that LoadIcon does not require a subsequent DestroyIcon in Win32m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);}void CAddDlg::DoDataExchange(CDataExchange* pDX){CDialog::DoDataExchange(pDX);//{{AFX_DATA_MAP(CAddDlg)DDX_Check(pDX, IDC_CHECK_ATONCE, m_bAtOnce);DDX_Text(pDX, IDC_ADD1, m_fAdd1);DDX_Text(pDX, IDC_ADD2, m_fAdd2);DDX_Text(pDX, IDC_RESULT, m_fResult);DDX_Text(pDX, IDC_STATIC_OPR, m_strOpr);DDX_Radio(pDX, IDC_RADIO_ADD, m_dOpr);//}}AFX_DATA_MAP}BEGIN_MESSAGE_MAP(CAddDlg, CDialog)//{{AFX_MSG_MAP(CAddDlg)ON_WM_SYSCOMMAND()ON_WM_PAINT()ON_WM_QUERYDRAGICON()ON_EN_CHANGE(IDC_ADD1, OnChangeAdd1)ON_EN_CHANGE(IDC_ADD2, OnChangeAdd2)ON_BN_CLICKED(IDC_Division, OnDivision)ON_BN_CLICKED(IDC_Multiplication, OnMultiplication)ON_BN_CLICKED(IDC_Subtraction, OnSubtraction)ON_BN_CLICKED(IDC_BUTTON_RESULT, OnButtonResult)ON_BN_CLICKED(IDC_RADIO_ADD, OnRadioAdd)//}}AFX_MSG_MAPEND_MESSAGE_MAP()/////////////////////////////////////////////////////////////////////////////// CAddDlg message handlersBOOL CAddDlg::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 < 0xF000);CMenu* pSysMenu = GetSystemMenu(FALSE);if (pSysMenu != NULL){CString strAboutMenu;strAboutMenu.LoadString(IDS_ABOUTBOX);if (!strAboutMenu.IsEmpty()){pSysMenu->AppendMenu(MF_SEPARATOR);pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);}}// Set the icon for this dialog.  The framework does this automatically//  when the application's 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 control}void CAddDlg::OnSysCommand(UINT nID, LPARAM lParam){if ((nID & 0xFFF0) == IDM_ABOUTBOX){CAboutDlg dlgAbout;dlgAbout.DoModal();}else{CDialog::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 CAddDlg::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);}else{CDialog::OnPaint();}}// The system calls this to obtain the cursor to display while the user drags//  the minimized window.HCURSOR CAddDlg::OnQueryDragIcon(){return (HCURSOR) m_hIcon;}void CAddDlg::OnButtonResult() {UpdateData();switch(m_dOpr){case 0:    //加法         m_fResult=m_fAdd1+m_fAdd2; break;case 1:    //减法         m_fResult=m_fAdd1-m_fAdd2; break;case 2:    //乘法         m_fResult=m_fAdd1*m_fAdd2; break;case 3:    //除法         m_fResult=m_fAdd1/m_fAdd2; break;}   UpdateData(FALSE);}void CAddDlg::OnChangeAdd1() {if(m_bAtOnce){OnButtonResult();}}void CAddDlg::OnChangeAdd2() {UpdateData();if(m_bAtOnce){OnButtonResult();}}void CAddDlg::OnDivision() {UpdateData();m_strOpr="/";    UpdateData(FALSE);}void CAddDlg::OnMultiplication() {UpdateData();m_strOpr="*";    UpdateData(FALSE);}void CAddDlg::OnSubtraction() {UpdateData();m_strOpr="-";    UpdateData(FALSE);}void CAddDlg::OnRadioAdd() {UpdateData();m_strOpr="+";    UpdateData(FALSE);}

运行结果：

有几点需要注意的：

1、UpdateData（）需要头文件支持：#include "afxwin.h"

2、单选框一般来说是不能关联变量的，要先选择加入Group。

真的是好有成就感！！

不过插入图标我还是木有搞清楚。。以后继续学习吧。。O(∩_∩)O哈哈~