vc6.0中用MFC编写计算器代码.doc

// CKcalculateDlg.cpp : implementation file
//
#include "stdafx.h"
#include "math.h"
#include "CKcalculate.h"
#include "CKcalculateDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

// double m_first; //存储一次运算的第一个操作数及一次运算的结果
// double m_second; //存储一次运算的第二个操作数
// CString m_operator; //存储运算符
// double m_coff; //存储小数点的系数权值

/////////////////////////////////////////////////////////////////////////////
// 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()

/////////////////////////////////////////////////////////////////////////////
// CCKcalculateDlg dialog

CCKcalculateDlg::CCKcalculateDlg(CWnd* pParent /*=NULL*/)
: CDialog(CCKcalculateDlg::IDD, pParent)
{
// void UpdateDisplay(double);
// void Calculate(void);
//{{AFX_DATA_INIT(CCKcalculateDlg)

///////////////////////////////////////////////////////////////////////////////////////////////////
//
isXdeY=false;
m_display = _T("");
m_PI=3.14159265358979323846;
m_first=0.0;
m_second=0.0;
m_operator=_T("+");
m_coff=0;
m_display=_T("0.0");

//}}AFX_DATA_INIT
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32

m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CCKcalculateDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);

//{{AFX_DATA_MAP(CCKcalculateDlg)

DDX_Text(pDX, IDC_DISPLAY, m_display);

//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CCKcalculateDlg, CDialog)
//{{AFX_MSG_MAP(CCKcalculateDlg)

ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_BUTTON0, OnButton0)
ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
ON_BN_CLICKED(IDC_BUTTON2, OnButton2)
ON_BN_CLICKED(IDC_BUTTON3, OnButton3)
ON_BN_CLICKED(IDC_BUTTON4, OnButton4)
ON_BN_CLICKED(IDC_BUTTON5, OnButton5)
ON_BN_CLICKED(IDC_BUTTON6, OnButton6)
ON_BN_CLICKED(IDC_BUTTON7, OnButton7)
ON_BN_CLICKED(IDC_BUTTON8, OnButton8)
ON_BN_CLICKED(IDC_BUTTON9, OnButton9)
ON_BN_CLICKED(IDC_BUTTON_ADD, OnButtonAdd)
ON_BN_CLICKED(IDC_BUTTON_MINUS, OnButtonMinus)
ON_BN_CLICKED(IDC_BUTTON_MUTIPLY, OnButtonMutiply)
ON_BN_CLICKED(IDC_BUTTON_DIV, OnButtonDiv)
ON_BN_CLICKED(IDC_BUTTON_SIGH, OnButtonSigh)
ON_BN_CLICKED(IDC_BUTTON_POINT, OnButtonPoint)
ON_BN_CLICKED(IDC_BUTTON_CLEAR, OnButtonClear)
ON_BN_CLICKED(IDC_BUTTON_SQRT, OnButtonSqrt)
ON_BN_CLICKED(IDC_BUTTON_RECI, OnButtonReci)
ON_BN_CLICKED(IDC_BUTTON_EQUAL, OnButtonEqual)
ON_BN_CLICKED(IDC_BUTTON_SIN, OnButtonSin)
ON_BN_CLICKED(IDC_BUTTON_COS, OnButtonCos)
ON_BN_CLICKED(IDC_BUTTON_LOG, OnButtonLog)
ON_BN_CLICKED(IDC_BUTTON_XDEY, OnButtonXdeY)

//}}AFX_MSG_MAP

END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCKcalculateDlg message handlers
/////////////////////////////////////////////////////////////////////////////
BOOL CCKcalculateDlg::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

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 CCKcalculateDlg::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 CCKcalculateDlg::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 CCKcalculateDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////按键代码
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

void CCKcalculateDlg::OnButton0()
{
// TODO: Add your control notification handler code here
onButtonN(0);
}

void CCKcalculateDlg::OnButton1()
{
// TODO: Add your control notification handler code here
onButtonN(1);
}

void CCKcalculateDlg::OnButton2()
{
// TODO: Add your control notification handler code here
onButtonN(2);
}

void CCKcalculateDlg::OnButton3()
{
// TODO: Add your control notification handler code here
onButtonN(3);
}

void CCKcalculateDlg::OnButton4()
{
// TODO: Add your control notification handler code here
onButtonN(4);
}

void CCKcalculateDlg::OnButton5()
{
// TODO: Add your control notification handler code here
onButtonN(5);
}

void CCKcalculateDlg::OnButton6()
{
// TODO: Add your control notification handler code here
onButtonN(6);
}

void CCKcalculateDlg::OnButton7()
{
// TODO: Add your control notification handler code here
onButtonN(7);
}

void CCKcalculateDlg::OnButton8()
{
// TODO: Add your control notification handler code here
onButtonN(8);
}

void CCKcalculateDlg::OnButton9()
{
// TODO: Add your control notification handler code here
onButtonN(9);
}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////计算按键代码
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

void CCKcalculateDlg::OnButtonAdd()
{
// TODO: Add your control notification handler code here
Calculate();
m_operator="+";
}

void CCKcalculateDlg::OnButtonMinus()
{
// TODO: Add your control notification handler code here
Calculate();
m_operator="-";
}

void CCKcalculateDlg::OnButtonMutiply()
{
// TODO: Add your control notification handler code here
Calculate();
m_operator="*";
}

void CCKcalculateDlg::OnButtonDiv()
{
// TODO: Add your control notification handler code here
Calculate();
m_operator="/";
}

void CCKcalculateDlg::OnButtonSigh()
{
// TODO: Add your control notification handler code here
m_second=-m_second;
UpdateDisplay(m_second);
}

void CCKcalculateDlg::OnButtonPoint()
{
// TODO: Add your control notification handler code here
m_coff =0.1;
}

void CCKcalculateDlg::OnButtonClear()
{
// TODO: Add your control notification handler code here
m_first=0.0;
m_second=0.0;
m_operator="+";
m_coff = 1.0;
UpdateDisplay(0.0);
}

void CCKcalculateDlg::OnButtonSqrt()
{
// TODO: Add your control notification handler code here
if( m_second==0 )
{
m_first=sqrt(m_first);
UpdateDisplay(m_first);
}
else
{
m_second=sqrt(m_second);
UpdateDisplay(m_second);
}
}

void CCKcalculateDlg::OnButtonReci()
{
// TODO: Add your control notification handler code here
if( fabs(m_second ) < 0.000001 && fabs( m_first )<0.000001)
{
m_display="除数不能为零";
UpdateDisplay(false);
return;
}
if( fabs(m_second ) < 0.000001)
{
m_first=1.0/m_first;
UpdateDisplay(m_first);
}
else
{
m_second=1.0/m_second;
UpdateDisplay(m_second);
}
}

void CCKcalculateDlg::OnButtonEqual()
{
// TODO: Add your control notification handler code here
XdeY();
Calculate();
}

void CCKcalculateDlg::UpdateDisplay(double ck)
{
m_display.Format(_T("%f"),ck);
int i=m_display.GetLength();
//格式化输出,将输出结果后的零截去
while(m_display.GetAt(i-1)=='0')
{
m_display.Delete(i-1,1);i--;
}
//更新编辑框变量m_display
UpdateData(false);

}

void CCKcalculateDlg::Calculate(void)
{
//将前一次数据与当前数据进行运算，作为下次的第一操作数，并在编辑框显示

switch(m_operator.GetAt(0))
{
case '+': m_first+=m_second;break;
case '-': m_first-=m_second;break;
case '*': m_first*=m_second;break;
case '/':
if( fabs(m_second ) <= 0.000001)
{
m_display="除数不能为0";
UpdateData(false);
return;
}
m_first/=m_second;break;
}

m_second=0.0;
m_coff=1.0;
m_operator=_T("+");
//更新编辑框显示内容
UpdateDisplay(m_first);
}

void CCKcalculateDlg::onButtonN(int n)
{
if(m_coff==1.0)
//作为整数输入数字时
m_second=m_second*10+n;
else
{
//作为小数输入数字
m_second=m_second+n*m_coff;
m_coff*=0.1;
}
//更新编辑框的数字显示
UpdateDisplay(m_second);
}

void CCKcalculateDlg::OnButtonSin()
{
// TODO: Add your control notification handler code here
m_second=m_second*m_PI/180;
m_second=sin(m_second);
UpdateDisplay(m_second);
}

void CCKcalculateDlg::OnButtonCos()
{
// TODO: Add your control notification handler code here
m_second=m_second*m_PI/180;
m_second=cos(m_second);
UpdateDisplay(m_second);
}

void CCKcalculateDlg::OnButtonLog()
{
// TODO: Add your control notification handler code here
m_second=log10(m_second);
UpdateDisplay(m_second);
}

void CCKcalculateDlg::OnButtonXdeY()
{
// TODO: Add your control notification handler code here
temp=m_second;
m_second=0.0;
UpdateDisplay(m_second);
isXdeY=true;
}

void CCKcalculateDlg::XdeY()
{
if(isXdeY)
{
m_second=m_second;
m_second=pow(temp,m_second);
}
}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////以下是CKcalculateDlg.h代码
// /////////CKcalculateDlg.h : header file
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

#if !defined(AFX_CKCALCULATEDLG_H__8DEB211E_CFCF_44C8_895C_BEF4E77EBE6C__INCLUDED_)
#define AFX_CKCALCULATEDLG_H__8DEB211E_CFCF_44C8_895C_BEF4E77EBE6C__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

/////////////////////////////////////////////////////////////////////////////
// CCKcalculateDlg dialog

class CCKcalculateDlg : public CDialog
{
// Construction
public:
void XdeY(void);
bool isXdeY;
double temp;
double m_PI;
void onButtonN(int n);
void UpdateDisplay(double ck);
void Calculate();
CCKcalculateDlg(CWnd* pParent = NULL); // standard constructor

// Dialog Data
//{{AFX_DATA(CCKcalculateDlg)

enum { IDD = IDD_CKCALCULATE_DIALOG };
CString m_display;

//}}AFX_DATA

double m_first;//存储一次运算的第一个操作数及一次运算的结果
double m_second;//存储一次运算的第二个操作数
CString m_operator;//存储运算符
double m_coff;//存储小数点的系数权值

// ClassWizard generated virtual function overrides
// {{AFX_VIRTUAL(CCKcalculateDlg)

protected:
virtual void DoDataExchange(CDataExchange* pDX);

// DDX/DDV support
//}}AFX_VIRTUAL

// Implementation
protected:
HICON m_hIcon;

// Generated message map functions
//{{AFX_MSG(CCKcalculateDlg)

virtual BOOL OnInitDialog();
afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
afx_msg void OnPaint();
afx_msg HCURSOR OnQueryDragIcon();
afx_msg void OnButton0();
afx_msg void OnButton1();
afx_msg void OnButton2();
afx_msg void OnButton3();
afx_msg void OnButton4();
afx_msg void OnButton5();
afx_msg void OnButton6();
afx_msg void OnButton7();
afx_msg void OnButton8();
afx_msg void OnButton9();
afx_msg void OnButtonAdd();
afx_msg void OnButtonMinus();
afx_msg void OnButtonMutiply();
afx_msg void OnButtonDiv();
afx_msg void OnButtonSigh();
afx_msg void OnButtonPoint();
afx_msg void OnButtonClear();
afx_msg void OnButtonSqrt();
afx_msg void OnButtonReci();
afx_msg void OnButtonEqual();
afx_msg void OnButtonSin();
afx_msg void OnButtonCos();
afx_msg void OnButtonLog();
afx_msg void OnButtonXdeY();

//}}AFX_MSG

DECLARE_MESSAGE_MAP()
};

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_CKCALCULATEDLG_H__8DEB211E_CFCF_44C8_895C_BEF4E77EBE6C__INCLUDED_)