第十周扩展

电玩女神 2022-06-16 13:12 45阅读 0赞

实验目的：做窗口
    实验内容：做窗口
     // 以下是我编制的程序
     // rootDlg.cpp : implementation file
    
    //
    
     
    
    #include "stdafx.h"
    
    #include "root.h"
    
    #include "rootDlg.h"
    
    #include<cmath>
    
    #ifdef _DEBUG
    
    #define new DEBUG_NEW
    
    #undef THIS_FILE
    
    static char THIS_FILE[] = __FILE__;
    
    #endif
    
     
    
    /
    
    // CAboutDlg dialog used for App About
    
     
    
    class 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
    
     
    
    // Implementation
    
    protected:
    
           //{
       {AFX_MSG(CAboutDlg)
    
           //}}AFX_MSG
    
           DECLARE_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_MAP
    
    END_MESSAGE_MAP()
    
     
    
    /
    
    // CRootDlg dialog
    
     
    
    CRootDlg::CRootDlg(CWnd* pParent )
    
           : CDialog(CRootDlg::IDD, pParent)
    
    {
    
           //{
       {AFX_DATA_INIT(CRootDlg)
    
           m_a = 0.0;
    
           m_b = 0.0;
    
           m_c = 0.0;
    
           m_x2 = 0.0;
    
           m_x1 = 0.0;
    
           //}}AFX_DATA_INIT
    
           // Note that LoadIcon does not require a subsequent DestroyIcon in Win32
    
           m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
    
    }
    
     
    
    void CRootDlg::DoDataExchange(CDataExchange* pDX)
    
    {
    
           CDialog::DoDataExchange(pDX);
    
           //{
       {AFX_DATA_MAP(CRootDlg)
    
           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_EDIT5, m_x2);
    
           DDX_Text(pDX, IDC_EDIT4, m_x1);
    
           //}}AFX_DATA_MAP
    
    }
    
     
    
    BEGIN_MESSAGE_MAP(CRootDlg, CDialog)
    
           //{
       {AFX_MSG_MAP(CRootDlg)
    
           ON_WM_SYSCOMMAND()
    
           ON_WM_PAINT()
    
           ON_WM_QUERYDRAGICON()
    
           ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
    
           //}}AFX_MSG_MAP
    
    END_MESSAGE_MAP()
    
     
    
    /
    
    // CRootDlg message handlers
    
     
    
    BOOL CRootDlg::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 dialog
    
           SetIcon(m_hIcon, TRUE);                  // Set big icon
    
           SetIcon(m_hIcon, FALSE);          // Set small icon
    
          
    
           // TODO: Add extra initialization here
    
          
    
           return TRUE;  // return TRUE  unless you set the focus to a control
    
    }
    
     
    
    void CRootDlg::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 CRootDlg::OnPaint()
    
    {
    
           if (IsIconic())
    
           {
    
                  CPaintDC dc(this); // device context for painting
    
     
    
                  SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);
    
     
    
                  // Center icon in client rectangle
    
                  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;
    
     
    
                  // Draw the icon
    
                  dc.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 CRootDlg::OnQueryDragIcon()
    
    {
    
           return (HCURSOR) m_hIcon;
    
    }
    
     
    
    void CRootDlg::OnButton1()
    
    {
    
     double delta;
    
      UpdateData();
    
      delta=m_b*m_b-4*m_a*m_c;
    
      if (delta >=0)
    
      {
    
             m_x1=(-m_b+sqrt(delta))/(2*m_a);
    
          m_x2=(-m_b-sqrt(delta))/(2*m_a);
    
      }
    
      else
    
           MessageBox("方程无实根！");
    
      UpdateData(FALSE); 
    
    }

运行结果：（贴图）

[![8ff404c44b064b7e006bb_690][]][8ff404c44b064b7e006bb_690 1]  
  
[![8ff404c44b064b878a76c_690][]][8ff404c44b064b878a76c_690 1]  
在此处出现了错误，经历了一下午苦苦寻找，终于找到了错误，真是功夫不负有心人啊  
[![8ff404c44b064b8c4477e_690][]][8ff404c44b064b8c4477e_690 1]  
  
[![8ff404c44b064b90ee6cf_690][]][8ff404c44b064b90ee6cf_690 1]  
  
经验积累：  
1.仔细勤奋。  
2.不会就问  
3.

上机感言：经历了一下午，在老师的帮助下完成了，太高兴了，我也可以做窗口了，而不是整天对着黑屏了

[8ff404c44b064b7e006bb_690]: /images/20220616/d58f4721c71b4a019e7d9c7a52a2e5b9.png
[8ff404c44b064b7e006bb_690 1]: http://blog.photo.sina.com.cn/showpic.html#url=http://s12.sinaimg.cn/orignal/8ff404c44b064b7e006bb
[8ff404c44b064b878a76c_690]: /images/20220616/bae8cc32715a4e92b9ec39178d024afd.png
[8ff404c44b064b878a76c_690 1]: http://blog.photo.sina.com.cn/showpic.html#url=http://s13.sinaimg.cn/orignal/8ff404c44b064b878a76c
[8ff404c44b064b8c4477e_690]: /images/20220616/712ee1b9f9304f88a84b9e2a26b5495d.png
[8ff404c44b064b8c4477e_690 1]: http://blog.photo.sina.com.cn/showpic.html#url=http://s15.sinaimg.cn/orignal/8ff404c44b064b8c4477e
[8ff404c44b064b90ee6cf_690]: /images/20220616/0699c84f19514af0802b52235f7ac772.png
[8ff404c44b064b90ee6cf_690 1]: http://blog.photo.sina.com.cn/showpic.html#url=http://s16.sinaimg.cn/orignal/8ff404c44b064b90ee6cf