首先，新建对话框应用程序，并且在界面上添加相应的控件
添加相关变量和控件的处理
头文件：
class CJisuanqiDlg : public CDialog
{
// Construction
public:
double m_dbnum;
bool m_bFlag;
double m_dbZ;
double m_dbY;
int m_nType;
double m_dbX;
CJisuanqiDlg(CWnd* pParent = NULL); // standard constructor
// Dialog Data
//{{AFX_DATA(CJisuanqiDlg)
enum { IDD = IDD_JISUANQI_DIALOG };
CButton m_c;
CButton m_back;
CButton m_9;
CButton m_8;
CButton m_7;
CButton m_6;
CButton m_5;
CButton m_4;
CButton m_3;
CButton m_2;
CButton m_1;
CButton m_0;
CButton m_jian;
CButton m_jia;
CButton m_dian;
CButton m_deng;
CButton m_chu;
CButton m_cheng;
CString m_number;
//}}AFX_DATA
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CJisuanqiDlg)
protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support
//}}AFX_VIRTUAL
// Implementation
protected:
HICON m_hIcon;
// Generated message map functions
//{{AFX_MSG(CJisuanqiDlg)
virtual BOOL OnInitDialog();
afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
afx_msg void OnPaint();
afx_msg HCURSOR OnQueryDragIcon();
afx_msg void OnBDeng();
afx_msg void OnBJia();
afx_msg void OnBJian();
afx_msg void OnBCheng();
afx_msg void OnBChu();
afx_msg void OnBDian();
afx_msg void OnB0();
afx_msg void OnB1();
afx_msg void OnB2();
afx_msg void OnB3();
afx_msg void OnB4();
afx_msg void OnB5();
afx_msg void OnB6();
afx_msg void OnB7();
afx_msg void OnB8();
afx_msg void OnB9();
afx_msg void OnBack();
afx_msg void OnC();
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
};
源文件：
CJisuanqiDlg::CJisuanqiDlg(CWnd* pParent /*=NULL*/)
: CDialog(CJisuanqiDlg::IDD, pParent)
{
m_bFlag = false;
//{{AFX_DATA_INIT(CJisuanqiDlg)
m_number = _T("");
//}}AFX_DATA_INIT
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
void CJisuanqiDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CJisuanqiDlg)
DDX_Control(pDX, IDC_C, m_c);
DDX_Control(pDX, IDC_BACK, m_back);
DDX_Control(pDX, IDC_B9, m_9);
DDX_Control(pDX, IDC_B8, m_8);
DDX_Control(pDX, IDC_B7, m_7);
DDX_Control(pDX, IDC_B6, m_6);
DDX_Control(pDX, IDC_B5, m_5);
DDX_Control(pDX, IDC_B4, m_4);
DDX_Control(pDX, IDC_B3, m_3);
DDX_Control(pDX, IDC_B2, m_2);
DDX_Control(pDX, IDC_B1, m_1);
DDX_Control(pDX, IDC_B0, m_0);
DDX_Control(pDX, IDC_B_JIAN, m_jian);
DDX_Control(pDX, IDC_B_JIA, m_jia);
DDX_Control(pDX, IDC_B_DIAN, m_dian);
DDX_Control(pDX, IDC_B_DENG, m_deng);
DDX_Control(pDX, IDC_B_CHU, m_chu);
DDX_Control(pDX, IDC_B_CHENG, m_cheng);
DDX_Text(pDX, IDC_STATIC_number, m_number);
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CJisuanqiDlg, CDialog)
//{{AFX_MSG_MAP(CJisuanqiDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_B_DENG, OnBDeng)
ON_BN_CLICKED(IDC_B_JIA, OnBJia)
ON_BN_CLICKED(IDC_B_JIAN, OnBJian)
ON_BN_CLICKED(IDC_B_CHENG, OnBCheng)
ON_BN_CLICKED(IDC_B_CHU, OnBChu)
ON_BN_CLICKED(IDC_B_DIAN, OnBDian)
ON_BN_CLICKED(IDC_B0, OnB0)
ON_BN_CLICKED(IDC_B1, OnB1)
ON_BN_CLICKED(IDC_B2, OnB2)
ON_BN_CLICKED(IDC_B3, OnB3)
ON_BN_CLICKED(IDC_B4, OnB4)
ON_BN_CLICKED(IDC_B5, OnB5)
ON_BN_CLICKED(IDC_B6, OnB6)
ON_BN_CLICKED(IDC_B7, OnB7)
ON_BN_CLICKED(IDC_B8, OnB8)
ON_BN_CLICKED(IDC_B9, OnB9)
ON_BN_CLICKED(IDC_BACK, OnBack)
ON_BN_CLICKED(IDC_C, OnC)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CJisuanqiDlg message handlers
BOOL CJisuanqiDlg::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 CJisuanqiDlg::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 CJisuanqiDlg::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 CJisuanqiDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}
void CJisuanqiDlg::OnBDeng()
{
UpdateData(TRUE);
m_dbY = strtod(m_number,NULL);//整型。 strtoul(m_number,NULL,10)浮点
if(0 == m_nType)
{
m_dbZ = m_dbX + m_dbY;
}
else if(1 == m_nType)
{
m_dbZ = m_dbX - m_dbY;
}
else if(2 == m_nType)
{
m_dbZ = m_dbX * m_dbY;
}
else if(3 == m_nType)
{
m_dbZ = m_dbX / m_dbY;
}
CString str = "";
str.Format("%f",m_dbZ);
str.TrimRight("0");
str.TrimRight(".");
m_number = str;
UpdateData(FALSE);
m_bFlag = true;
}
void CJisuanqiDlg::OnBJia()
{
m_nType = 0;
UpdateData(TRUE);
m_dbX = strtod(m_number,NULL);
m_bFlag = true;
}
void CJisuanqiDlg::OnBJian()
{
m_nType = 1;
UpdateData(TRUE);
m_dbX = strtod(m_number,NULL);
m_bFlag = true;
}
void CJisuanqiDlg::OnBCheng()
{
m_nType = 2;
UpdateData(TRUE);
m_dbX = strtod(m_number,NULL);
m_bFlag = true;
}
void CJisuanqiDlg::OnBChu()
{
m_nType = 3;
UpdateData(TRUE);
m_dbX = strtod(m_number,NULL);
m_bFlag = true;
}
void CJisuanqiDlg::OnBDian()
{
if(m_bFlag)
{
m_number = "";
UpdateData(FALSE);
m_bFlag = false;
}
else
{}
UpdateData(TRUE);
m_number = m_number + ".";
UpdateData(FALSE);
}
void CJisuanqiDlg::OnB0()
{
if(m_bFlag)
{
m_number = "";
UpdateData(FALSE);
m_bFlag = false;
}
else
{}
UpdateData(TRUE);
m_number = m_number + "0";
UpdateData(FALSE);
}
void CJisuanqiDlg::OnB1()
{
if(m_bFlag)
{
m_number = "";
UpdateData(FALSE);
m_bFlag = false;
}
else
{}
UpdateData(TRUE);
m_number = m_number + "1";
UpdateData(FALSE);
}
void CJisuanqiDlg::OnB2()
{
if(m_bFlag)
{
m_number = "";
UpdateData(FALSE);
m_bFlag = false;
}
else
{}
UpdateData(TRUE);
m_number = m_number + "2";
UpdateData(FALSE);
}
void CJisuanqiDlg::OnB3()
{
if(m_bFlag)
{
m_number = "";
UpdateData(FALSE);
m_bFlag = false;
}
else
{}
UpdateData(TRUE);
m_number = m_number + "3";
UpdateData(FALSE);
}
void CJisuanqiDlg::OnB4()
{
if(m_bFlag)
{
m_number = "";
UpdateData(FALSE);
m_bFlag = false;
}
else
{}
UpdateData(TRUE);
m_number = m_number + "4";
UpdateData(FALSE);
}
void CJisuanqiDlg::OnB5()
{
if(m_bFlag)
{
m_number = "";
UpdateData(FALSE);
m_bFlag = false;
}
else
{}
UpdateData(TRUE);
m_number = m_number + "5";
UpdateData(FALSE);
}
void CJisuanqiDlg::OnB6()
{
if(m_bFlag)
{
m_number = "";
UpdateData(FALSE);
m_bFlag = false;
}
else
{}
UpdateData(TRUE);
m_number = m_number + "6";
UpdateData(FALSE);
}
void CJisuanqiDlg::OnB7()
{
if(m_bFlag)
{
m_number = "";
UpdateData(FALSE);
m_bFlag = false;
}
else
{}
UpdateData(TRUE);
m_number = m_number + "7";
UpdateData(FALSE);
}
void CJisuanqiDlg::OnB8()
{
if(m_bFlag)
{
m_number = "";
UpdateData(FALSE);
m_bFlag = false;
}
else
{}
UpdateData(TRUE);
m_number = m_number + "8";
UpdateData(FALSE);
}
void CJisuanqiDlg::OnB9()
{
if(m_bFlag)
{
m_number = "";
UpdateData(FALSE);
m_bFlag = false;
}
else
{}
UpdateData(TRUE);
m_number = m_number + "9";
UpdateData(FALSE);
}
void CJisuanqiDlg::OnBack()
{
UpdateData(TRUE);
// m_number = m_number-"";
// m_dbnum = strtoul(m_number,NULL,10);
// m_dbnum = m_dbnum/10;
int length = m_number.GetLength();
if(length > 0)
{
m_number = m_number.Left(length-1);
}
length = m_number.GetLength();
if(length == 0)
{
m_number = "0";
}
// CString str;
// str.Format("%f",m_dbnum);
// m_number = str;
UpdateData(FALSE);
}
void CJisuanqiDlg::OnC()
{
UpdateData(TRUE);
// CString str;
// str.Format("%f",0);
// m_bFlag = true;
m_number = "0.";
m_bFlag = true;
UpdateData(FALSE);
}
运行效果：
