MFC-实现计算机完善(+-*/%的完善)

最新推荐文章于 2022-08-25 11:22:18 发布
老夫运维全靠一把梭
最新推荐文章于 2022-08-25 11:22:18 发布
阅读量396
点赞数
CC 4.0 BY-SA版权
分类专栏： MFC
本文链接：https://blog.youkuaiyun.com/flyonedream/article/details/78798664
MFC 专栏收录该内容
10 篇文章
订阅专栏
本文介绍了一个简单的计算器程序的设计与实现过程，包括控件响应处理、基本的四则运算逻辑及界面初始化等内容。
摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >
经过几天的努力，总算把之前遗留的问题给解决了，长话短说代码奉上
// MyWindowDlg.cpp : 实现文件
//

#include "stdafx.h"
#include "MyWindow.h"
#include "MyWindowDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// 用于应用程序“关于”菜单项的 CAboutDlg 对话框

class CAboutDlg : public CDialog
{
public:
    CAboutDlg();

// 对话框数据
    enum { IDD = IDD_ABOUTBOX };

    protected:
    virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV 支持

// 实现
protected:
    DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
    CDialog::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
END_MESSAGE_MAP()


// CMyWindowDlg 对话框




CMyWindowDlg::CMyWindowDlg(CWnd* pParent /*=NULL*/)
    : CDialog(CMyWindowDlg::IDD, pParent)
    , m_edt_cs(_T(""))
    , m_nPlanNum(0)
    , m_nowNum(0)
    , m_nPreOperator(ONull)
    , LastPressIsOperater(0)
{
    m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
    //MessageBox(L"CMyWindowDlg 类的构造函数");

}

void CMyWindowDlg::DoDataExchange(CDataExchange* pDX)
{
    CDialog::DoDataExchange(pDX);
    DDX_Text(pDX, IDC_EDIT1, m_edt_cs);
    DDX_Control(pDX, IDC_EDIT1, m_edt1_ctl);
}

BEGIN_MESSAGE_MAP(CMyWindowDlg, CDialog)
    ON_WM_SYSCOMMAND()
    ON_WM_PAINT()
    ON_WM_QUERYDRAGICON()
    //}}AFX_MSG_MAP
    //ON_BN_CLICKED(IDOK, &CMyWindowDlg::OnBnClickedOk)

    ON_WM_CHAR()
//  ON_WM_LBUTTONDOWN()
ON_WM_CREATE()
ON_BN_CLICKED(IDC_BUTTON_07, &CMyWindowDlg::OnBnClickedButton07)
ON_BN_CLICKED(IDC_BUTTON_08, &CMyWindowDlg::OnBnClickedButton08)
ON_BN_CLICKED(IDC_BUTTON_04, &CMyWindowDlg::OnBnClickedButton04)
ON_BN_CLICKED(IDC_BUTTON_01, &CMyWindowDlg::OnBnClickedButton01)
ON_BN_CLICKED(IDC_BUTTON_00, &CMyWindowDlg::OnBnClickedButton00)
ON_BN_CLICKED(IDC_BUTTON26, &CMyWindowDlg::OnBnClickedButton26)
ON_BN_CLICKED(IDC_BUTTON_02, &CMyWindowDlg::OnBnClickedButton02)
ON_BN_CLICKED(IDC_BUTTON_05, &CMyWindowDlg::OnBnClickedButton05)
ON_BN_CLICKED(IDC_BUTTON_09, &CMyWindowDlg::OnBnClickedButton09)
ON_BN_CLICKED(IDC_BUTTON_06, &CMyWindowDlg::OnBnClickedButton06)
ON_BN_CLICKED(IDC_BUTTON_03, &CMyWindowDlg::OnBnClickedButton03)
ON_BN_CLICKED(IDC_BTN_BS, &CMyWindowDlg::OnBnClickedBtnBs)
ON_BN_CLICKED(IDC_BUTTON_C, &CMyWindowDlg::OnBnClickedButtonC)
ON_BN_CLICKED(IDC_BUTTON_ADD_SUB, &CMyWindowDlg::OnBnClickedButtonAddSub)
ON_EN_CHANGE(IDC_EDIT1, &CMyWindowDlg::OnEnChangeEdit1)
ON_BN_CLICKED(IDC_BUTTON_ADD, &CMyWindowDlg::OnBnClickedButtonAdd)
ON_BN_CLICKED(IDC_BUTTON14, &CMyWindowDlg::OnBnClickedButton14)
ON_BN_CLICKED(IDC_BUTTON_SUB, &CMyWindowDlg::OnBnClickedButtonSub)
ON_BN_CLICKED(IDC_BUTTON_MUL, &CMyWindowDlg::OnBnClickedButtonMul)
ON_BN_CLICKED(IDC_BUTTON_DIV, &CMyWindowDlg::OnBnClickedButtonDiv)
ON_BN_CLICKED(IDC_BUTTON_CE, &CMyWindowDlg::OnBnClickedButtonCe)
ON_BN_CLICKED(IDC_BUTTON_QM, &CMyWindowDlg::OnBnClickedButtonQm)
ON_COMMAND(ID_32777, &CMyWindowDlg::On32777)
ON_COMMAND(ID_32771, &CMyWindowDlg::OnMenuCopy)
ON_COMMAND(ID_32772, &CMyWindowDlg::OnMenuPaste)
END_MESSAGE_MAP()


// CMyWindowDlg 消息处理程序

BOOL CMyWindowDlg::OnInitDialog()
{
    CDialog::OnInitDialog();

    // 将“关于...”菜单项添加到系统菜单中。

    // IDM_ABOUTBOX 必须在系统命令范围内。
    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);
        }
    }

    // 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
    //MessageBox(L"OnInitDialog ");

    /*HWND h=::GetDlgItem(m_hWnd,IDC_EDIT1);
    ::SetWindowText(h,L"0.");*/
    //GetDlgItem(IDC_EDIT1)->SetWindowText(L"0.");

    m_edt_cs=L"";
    UpdateData(FALSE);//表示把关联变量数值更新到窗口
    m_edt1_ctl.SetWindowText(L"");//省略了参数 m_edt1_ctl.m_hWnd

    return TRUE;  // 除非将焦点设置到控件，否则返回 TRUE
}

void CMyWindowDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
    if ((nID & 0xFFF0) == IDM_ABOUTBOX)
    {
        CAboutDlg dlgAbout;
        dlgAbout.DoModal();
    }
    else
    {
        CDialog::OnSysCommand(nID, lParam);
    }
}

// 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 CMyWindowDlg::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
    {
        CDialog::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 CMyWindowDlg::OnQueryDragIcon()
{
    return static_cast<HCURSOR>(m_hIcon);
}


//void CMyWindowDlg::OnBnClickedOk()
//{
//  // TODO: 在此添加控件通知处理程序代码
//  //printf("dd");
//  MessageBox(L"我的程序");
//  //OnOK(); 退出程序
//}



void CMyWindowDlg::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags)
{
    // TODO: 在此添加消息处理程序代码和/或调用默认值

    CDialog::OnChar(nChar, nRepCnt, nFlags);
}

void CMyWindowDlg::OnLButtonDown(UINT nFlags, CPoint point)
{
    //  (static_cast< void (AFX_MSG_CALL CWnd::*)(UINT, CPoint) > ( &ThisClass :: OnLButtonDown)) },
    // TODO: 在此添加消息处理程序代码和/或调用默认值
    //MessageBox(L"鼠标左键按下了");
    CDialog::OnLButtonDown(nFlags, point);
}

int CMyWindowDlg::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
    if (CDialog::OnCreate(lpCreateStruct) == -1)
        return -1;

    // TODO:  在此添加您专用的创建代码
    //MessageBox(L"OnCreate 窗口创建");

    return 0;
}

void CMyWindowDlg::OnBnClickedButton07()
{
    PressNum(7);
}


void CMyWindowDlg::OnBnClickedButton08()
{
    PressNum(8);
}

void CMyWindowDlg::OnBnClickedButton04()
{
    PressNum(4);
}

void CMyWindowDlg::OnBnClickedButton01()
{
    PressNum(1);
}

void CMyWindowDlg::OnBnClickedButton00()
{
    PressNum(0);
}

void CMyWindowDlg::OnBnClickedButton26()
{
    // TODO: 在此添加控件通知处理程序代码
}

void CMyWindowDlg::OnBnClickedButton02()
{
    PressNum(2);
}

void CMyWindowDlg::OnBnClickedButton05()
{
    PressNum(5);
}

void CMyWindowDlg::OnBnClickedButton09()
{
    PressNum(9);
}

void CMyWindowDlg::OnBnClickedButton06()
{
    PressNum(6);
}

void CMyWindowDlg::OnBnClickedButton03()
{
    PressNum(3);
}

void CMyWindowDlg::OnBnClickedBtnBs()
{
    // TODO: 在此添加控件通知处理程序代码
    m_edt_cs.GetBuffer() [ m_edt_cs.GetLength() - 1] = 0;//WCHAR* WCHAR
    // char a[255];
    // char *p=a;
    // p[3] a[3]
    m_edt_cs.ReleaseBuffer();//释放缓冲区
    UpdateData(false);
}


void CMyWindowDlg::OnBnClickedButtonC()
{
    // TODO: 在此添加控件通知处理程序代码
    OnBnClickedButtonCe();
    //清零代码
    LastPressIsOperater = 0; //表示未按下运算符
    m_nowNum = 0;
    m_nPlanNum = 0; //累计数值为0
    m_nPreOperator = ONull;

}

void CMyWindowDlg::OnBnClickedButtonAddSub()
{
    // TODO: 在此添加控件通知处理程序代码
    const TCHAR *ps = m_edt_cs.GetBuffer();
    if (ps[0] == '-')
    {
        ps++;
        m_edt_cs = ps;
        //去掉减号
    }
    else
    {
        CString s;
        s = _T("-");
        s += m_edt_cs; //加上-号
        m_edt_cs = s;
    }
    m_edt_cs.ReleaseBuffer();

    UpdateData(FALSE);
}

void CMyWindowDlg::OnEnChangeEdit1()
{
    // TODO:  如果该控件是 RICHEDIT 控件，则它将不会
    // 发送该通知，除非重写 CDialog::OnInitDialog()
    // 函数并调用 CRichEditCtrl().SetEventMask()，
    // 同时将 ENM_CHANGE 标志“或”运算到掩码中。

    // TODO:  在此添加控件通知处理程序代码
    UpdateData(true);//更新窗口数据至变量
}


// 用于计算四则运算
int CMyWindowDlg::plan(OperatorNum nOperator)
{
    //如果上次按下的是运算符，则更新m_nPreOperator的值，退出此函数
    if (LastPressIsOperater)
    {
        m_nPreOperator = nOperator;
        return 1;
    }
    m_nowNum = _wtoi(m_edt_cs);
    switch(m_nPreOperator)
    {
    case ONull: //空运算
        m_nPlanNum = m_nowNum;
        break;
    case OAdd: //加
        m_nPlanNum += m_nowNum;
        break;
    case OSub: //减
        m_nPlanNum = m_nPlanNum - m_nowNum;
        break;
    case OMul: //乘
        m_nPlanNum = m_nPlanNum * m_nowNum;
        break;
    case ODiv: //除
        m_nPlanNum = m_nPlanNum / m_nowNum;
        break;
    case OMod: //取模
        m_nPlanNum = m_nPlanNum % m_nowNum;
        break;
    }
    m_nPreOperator = nOperator;
    LastPressIsOperater = 1;
    m_edt_cs.Format(L"%d",m_nPlanNum);  //printf
    UpdateData(false);
    return 0;
}


void CMyWindowDlg::OnBnClickedButtonAdd()
{
    // TODO: 在此添加控件通知处理程序代码
    plan(OAdd);

}


void CMyWindowDlg::OnBnClickedButton14()
{
    // TODO: 在此添加控件通知处理程序代码
    plan(m_nPreOperator);
}


// 表示按下0-9中某个键
int CMyWindowDlg::PressNum(int nNum)
{
    CString ts;
    ts.Format(_T("%d"),nNum);
    if (LastPressIsOperater)
    {
        m_edt_cs = ts;  //上次按下的是运算符，重新赋值
    }
    else
    {
        m_edt_cs += ts; //上次按下的是数字，追加
    }
    m_edt_cs+=L""; //CString
    LastPressIsOperater = 0;
    UpdateData(false);
    return 0;
}


void CMyWindowDlg::OnBnClickedButtonSub()
{
    // TODO: 在此添加控件通知处理程序代码
    plan(OSub);
}


void CMyWindowDlg::OnBnClickedButtonMul()
{
    // TODO: 在此添加控件通知处理程序代码
    plan(OMul);
}


void CMyWindowDlg::OnBnClickedButtonDiv()
{
    // TODO: 在此添加控件通知处理程序代码
    plan(ODiv);
}


void CMyWindowDlg::OnBnClickedButtonCe()
{
    // TODO: 在此添加控件通知处理程序代码
    m_edt_cs = L"";
    UpdateData(false);
}


void CMyWindowDlg::OnBnClickedButtonQm()
{
    // TODO: 在此添加控件通知处理程序代码
    plan(OMod);
}