第十五周任务（一）

/* (程序头部注释开始)           
* 程序的版权和版本声明部分           
* Copyright (c) 2011, 烟台大学计算机学院学生            
* All rights reserved.           
* 文件名称：                                         
* 作    者：   刘洋                          
* 完成日期：   2012   年  5 月 31 日           
* 版 本 号：                     
* 对任务及求解方法的描述部分           
* 输入描述：          关于MFC 
* 问题描述：         
* 程序头部的注释结束           
*/      

class Triangle{public:Triangle(){a=1;b=1;c=1;}Triangle(double x, double y, double z) {a=x; b=y; c=z;}double area(void);double perimeter(void);private:double a,b,c;};#include "stdafx.h"#include <Cmath>#include "MyTriangle.h"double Triangle::area(void){ double s=(a+b+c)/2;return sqrt(s*(s-a)*(s-b)*(s-c));}double Triangle::perimeter(void){return (a+b+c);}// triangleDlg.cpp : implementation file//#include "stdafx.h"#include "triangle.h"#include "triangleDlg.h"#include"MyTriangle.h"#ifdef _DEBUG#define new DEBUG_NEW#endif// CAboutDlg dialog used for App Aboutclass CAboutDlg : public CDialog{public:CAboutDlg();// Dialog Dataenum { IDD = IDD_ABOUTBOX };protected:virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support// Implementationprotected:DECLARE_MESSAGE_MAP()};CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD){}void CAboutDlg::DoDataExchange(CDataExchange* pDX){CDialog::DoDataExchange(pDX);}BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)END_MESSAGE_MAP()// CtriangleDlg dialogCtriangleDlg::CtriangleDlg(CWnd* pParent /*=NULL*/): CDialog(CtriangleDlg::IDD, pParent), m_a(0), m_b(0), m_c(0), m_area(0), m_perimeter(0){m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);}void CtriangleDlg::DoDataExchange(CDataExchange* pDX){CDialog::DoDataExchange(pDX);DDX_Text(pDX, IDC_EDIT1, m_a);DDX_Text(pDX, IDC_EDIT2, m_b);DDX_Text(pDX, IDC_EDIT3, m_c);DDX_Text(pDX, IDC_EDIT4, m_area);DDX_Text(pDX, IDC_EDIT5, m_perimeter);}BEGIN_MESSAGE_MAP(CtriangleDlg, CDialog)ON_WM_SYSCOMMAND()ON_WM_PAINT()ON_WM_QUERYDRAGICON()//}}AFX_MSG_MAPON_BN_CLICKED(IDC_BUTTON1, &CtriangleDlg::OnBnClickedButton1)ON_BN_CLICKED(IDC_BUTTON2, &CtriangleDlg::OnBnClickedButton2)END_MESSAGE_MAP()// CtriangleDlg message handlersBOOL CtriangleDlg::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){BOOL bNameValid;CString strAboutMenu;bNameValid = strAboutMenu.LoadString(IDS_ABOUTBOX);ASSERT(bNameValid);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 CtriangleDlg::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 CtriangleDlg::OnPaint(){if (IsIconic()){CPaintDC dc(this); // device context for paintingSendMessage(WM_ICONERASEBKGND, reinterpret_cast<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 function to obtain the cursor to display while the user drags//  the minimized window.HCURSOR CtriangleDlg::OnQueryDragIcon(){return static_cast<HCURSOR>(m_hIcon);}void CtriangleDlg::OnBnClickedButton1(){ // TODO: 在此添加控件通知处理程序代码UpdateData(); //将把界面上各控件输入的值“捕获”到与之关联的变量中Triangle t1(m_a,m_b,m_c); //定义三角形对象m_area=t1.area();//求面积UpdateData(FALSE); //用m_area的值更新界面上对应的控件的值并实现显示}void CtriangleDlg::OnBnClickedButton2(){ // TODO: 在此添加控件通知处理程序代码UpdateData(); //将把界面上各控件输入的值“捕获”到与之关联的变量中Triangle t1(m_a,m_b,m_c); //定义三角形对象m_perimeter=t1.perimeter(); //求面积UpdateData(FALSE); //用m_area的值更新界面上对应的控件的值并实现显示}

虽然说窗口化的程序感觉上比较美观吧，但本质上跟以前的“黑框框”程序还是一样的。