MyCalculatorDlgcpp.docx

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MyCalculatorDlgcpp.docx

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MyCalculatorDlgcpp

//MyCalculatorDlg.cpp:

implementationfile

//

#include"stdafx.h"

#include"MyCalculator.h"

#include"MyCalculatorDlg.h"

#include"Math.h"

#ifdef_DEBUG

#definenewDEBUG_NEW

#undefTHIS_FILE

staticcharTHIS_FILE[]=__FILE__;

#endif

/////////////////////////////////////////////////////////////////////////////

//CAboutDlgdialogusedforAppAbout

classCAboutDlg:

publicCDialog

{

public:

CAboutDlg();

//DialogData

//{{AFX_DATA(CAboutDlg)

enum{IDD=IDD_ABOUTBOX};

//}}AFX_DATA

//ClassWizardgeneratedvirtualfunctionoverrides

//{{AFX_VIRTUAL(CAboutDlg)

protected:

virtualvoidDoDataExchange(CDataExchange*pDX);//DDX/DDVsupport

//}}AFX_VIRTUAL

//Implementation

protected:

//{{AFX_MSG(CAboutDlg)

//}}AFX_MSG

DECLARE_MESSAGE_MAP()

};

CAboutDlg:

:

CAboutDlg():

CDialog(CAboutDlg:

:

IDD)

{

//{{AFX_DATA_INIT(CAboutDlg)

//}}AFX_DATA_INIT

}

voidCAboutDlg:

:

DoDataExchange(CDataExchange*pDX)

{

CDialog:

:

DoDataExchange(pDX);

//{{AFX_DATA_MAP(CAboutDlg)

//}}AFX_DATA_MAP

}

BEGIN_MESSAGE_MAP(CAboutDlg,CDialog)

//{{AFX_MSG_MAP(CAboutDlg)

//Nomessagehandlers

//}}AFX_MSG_MAP

END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////

一、构造函数初始化CMyCalculatorDlg

//CMyCalculatorDlgdialog

CMyCalculatorDlg:

:

CMyCalculatorDlg(CWnd*pParent/*=NULL*/)

:

CDialog(CMyCalculatorDlg:

:

IDD,pParent)

{

//{{AFX_DATA_INIT(CMyCalculatorDlg)

m_display=_T("0.0");

m_first=0.0;

m_second=0.0;

m_operator=_T("+");

m_coff=1.0;

//}}AFX_DATA_INIT

//NotethatLoadIcondoesnotrequireasubsequentDestroyIconinWin32

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

}

voidCMyCalculatorDlg:

:

DoDataExchange(CDataExchange*pDX)

{

CDialog:

:

DoDataExchange(pDX);

//{{AFX_DATA_MAP(CMyCalculatorDlg)

DDX_Text(pDX,IDC_DISPLAY,m_display);

//}}AFX_DATA_MAP

}

BEGIN_MESSAGE_MAP(CMyCalculatorDlg,CDialog)

//{{AFX_MSG_MAP(CMyCalculatorDlg)

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_SQRT,OnButtonSqrt)

ON_BN_CLICKED(IDC_BUTTON_SIGN,OnButtonSign)

ON_BN_CLICKED(IDC_BUTTON_MUTIPLY,OnButtonMutiply)

ON_BN_CLICKED(IDC_BUTTON_MINUS,OnButtonMinus)

ON_BN_CLICKED(IDC_BUTTON_EQUAL,OnButtonEqual)

ON_BN_CLICKED(IDC_BUTTON_DIV,OnButtonDiv)

ON_BN_CLICKED(IDC_BUTTON_CLEAR,OnButtonClear)

ON_BN_CLICKED(IDC_BUTTON_ADD,OnButtonAdd)

ON_BN_CLICKED(IDC_BUTTON_RECIPROCAL,OnButtonReciprocal)

//}}AFX_MSG_MAP

END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////

//CMyCalculatorDlgmessagehandlers

BOOLCMyCalculatorDlg:

:

OnInitDialog()

{

CDialog:

:

OnInitDialog();

//Add"About..."menuitemtosystemmenu.

//IDM_ABOUTBOXmustbeinthesystemcommandrange.

ASSERT((IDM_ABOUTBOX&0xFFF0)==IDM_ABOUTBOX);

ASSERT(IDM_ABOUTBOX<0xF000);

CMenu*pSysMenu=GetSystemMenu(FALSE);

if(pSysMenu!

=NULL)

{

CStringstrAboutMenu;

strAboutMenu.LoadString(IDS_ABOUTBOX);

if(!

strAboutMenu.IsEmpty())

{

pSysMenu->AppendMenu(MF_SEPARATOR);

pSysMenu->AppendMenu(MF_STRING,IDM_ABOUTBOX,strAboutMenu);

}

}

//Settheiconforthisdialog.Theframeworkdoesthisautomatically

//whentheapplication'smainwindowisnotadialog

SetIcon(m_hIcon,TRUE);//Setbigicon

SetIcon(m_hIcon,FALSE);//Setsmallicon

//TODO:

Addextrainitializationhere

returnTRUE;//returnTRUEunlessyousetthefocustoacontrol

}

voidCMyCalculatorDlg:

:

OnSysCommand(UINTnID,LPARAMlParam)

{

if((nID&0xFFF0)==IDM_ABOUTBOX)

{

CAboutDlgdlgAbout;

dlgAbout.DoModal();

}

else

{

CDialog:

:

OnSysCommand(nID,lParam);

}

}

//Ifyouaddaminimizebuttontoyourdialog,youwillneedthecodebelow

//todrawtheicon.ForMFCapplicationsusingthedocument/viewmodel,

//thisisautomaticallydoneforyoubytheframework.

voidCMyCalculatorDlg:

:

OnPaint()

{

if(IsIconic())

{

CPaintDCdc(this);//devicecontextforpainting

SendMessage(WM_ICONERASEBKGND,(WPARAM)dc.GetSafeHdc(),0);

//Centericoninclientrectangle

intcxIcon=GetSystemMetrics(SM_CXICON);

intcyIcon=GetSystemMetrics(SM_CYICON);

CRectrect;

GetClientRect(&rect);

intx=(rect.Width()-cxIcon+1)/2;

inty=(rect.Height()-cyIcon+1)/2;

//Drawtheicon

dc.DrawIcon(x,y,m_hIcon);

}

else

{

CDialog:

:

OnPaint();

}

}

//Thesystemcallsthistoobtainthecursortodisplaywhiletheuserdrags

//theminimizedwindow.

HCURSORCMyCalculatorDlg:

:

OnQueryDragIcon()

{

return(HCURSOR)m_hIcon;

}

二、按钮函数

voidCMyCalculatorDlg:

:

OnButton0()

{

//TODO:

Addyourcontrolnotificationhandlercodehere

if(m_coff==1.0)

m_second=m_second*10+0;

else

{m_second=m_second+0*m_coff;

m_coff*=0.1;

}

UpdateDisplay(m_second);

}

voidCMyCalculatorDlg:

:

OnButton1()

{

//TODO:

Addyourcontrolnotificationhandlercodehere

if(m_coff==1.0)

m_second=m_second*10+1;

else

{m_second=m_second+1*m_coff;

m_coff*=0.1;

}

UpdateDisplay(m_second);

}

voidCMyCalculatorDlg:

:

OnButton2()

{

//TODO:

Addyourcontrolnotificationhandlercodehere

if(m_coff==1.0)

m_second=m_second*10+2;

else

{m_second=m_second+2*m_coff;

m_coff*=0.1;

}

UpdateDisplay(m_second);

}

voidCMyCalculatorDlg:

:

OnButton3()

{

//TODO:

Addyourcontrolnotificationhandlercodehere

if(m_coff==1.0)

m_second=m_second*10+3;

else

{m_second=m_second+3*m_coff;

m_coff*=0.1;

}

UpdateDisplay(m_second);

}

voidCMyCalculatorDlg:

:

OnButton4()

{

//TODO:

Addyourcontrolnotificationhandlercodehere

if(m_coff==1.0)

m_second=m_second*10+4;

else

{m_second=m_second+4*m_coff;

m_coff*=0.1;

}

UpdateDisplay(m_second);

}

voidCMyCalculatorDlg:

:

OnButton5()

{

//TODO:

Addyourcontrolnotificationhandlercodehere

if(m_coff==1.0)

m_second=m_second*10+5;

else

{m_second=m_second+5*m_coff;

m_coff*=0.1;

}

UpdateDisplay(m_second);

}

voidCMyCalculatorDlg:

:

OnButton6()

{

//TODO:

Addyourcontrolnotificationhandlercodehere

if(m_coff==1.0)

m_second=m_second*10+6;

else

{m_second=m_second+6*m_coff;

m_coff*=0.1;

}

UpdateDisplay(m_second);

}

voidCMyCalculatorDlg:

:

OnButton7()

{

//TODO:

Addyourcontrolnotificationhandlercodehere

if(m_coff==1.0)

m_second=m_second*10+7;

else

{m_second=m_second+7*m_coff;

m_coff*=0.1;

}

UpdateDisplay(m_second);

}

voidCMyCalculatorDlg:

:

OnButton8()

{

//TODO:

Addyourcontrolnotificationhandlercodehere

if(m_coff==1.0)

m_second=m_second*10+8;

else

{m_second=m_second+8*m_coff;

m_coff*=0.1;

}

UpdateDisplay(m_second);

}

voidCMyCalculatorDlg:

:

OnButton9()

{

//TODO:

Addyourcontrolnotificationhandlercodehere

if(m_coff==1.0)

m_second=m_second*10+9;

else

{m_second=m_second+9*m_coff;

m_coff*=0.1;

}

UpdateDisplay(m_second);

}

三、开平方函数

voidCMyCalculatorDlg:

:

OnButtonSqrt()

{

//TODO:

Addyourcontrolnotificationhandlercodehere

m_second=sqrt(m_second);

UpdateDisplay(m_second);

}

四、符号函数

voidCMyCalculatorDlg:

:

OnButtonSign()

{

//TODO:

Addyourcontrolnotificationhandlercodehere

m_second=-m_second;

UpdateDisplay(m_second);

}

五、加减乘除函数

voidCMyCalculatorDlg:

:

OnButtonAdd()

{

//TODO:

Addyourcontrolnotificationhandlercodehere

Calculate();

m_operator="+";

}

voidCMyCalculatorDlg:

:

OnButtonMinus()

{

//TODO:

Addyourcontrolnotificationhandlercodehere

Calculate();

m_operator="-";

}

voidCMyCalculatorDlg:

:

OnButtonMutiply()

{

//TODO:

Addyourcontrolnotificationhandlercodehere

Calculate();

m_operator="*";

}

voidCMyCalculatorDlg:

:

OnButtonDiv()

{

//TODO:

Addyourcontrolnotificationhandlercodehere

Calculate();

m_operator.Format("%s","/");

}

voidCMyCalculatorDlg:

:

OnButtonClear()

{

//TODO:

Addyourcontrolnotificationhandlercodehere

m_first=0.0;

m_second=0.0;

m_operator="+";

m_coff=1.0;

UpdateDisplay(0.0);

}

六、计算函数

voidCMyCalculatorDlg:

:

Calculate(void)

{

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="除数不能为零";

UpdateData(false);

return;

}

m_first/=m_second;break;

}

m_second=0.0;

m_coff=1.0;

UpdateDisplay(m_first);

}

七、“=”函数

voidCMyCalculatorDlg:

:

OnButtonEqual()

{

//TODO:

Addyourcontrolnotificationhandlercodehere

Calculate();

m_first=0.0;

m_operator="+";

}

八、显示函数

voidCMyCalculatorDlg:

:

UpdateDisplay(doublelVal)

{

m_display.Format(_T("%f"),lVal);

inti=m_display.GetLength();

//格式化输出,将输出结果后的零全部截去

while(m_display.GetAt(i-1)=='0')

{m_display.Delete(i-1,1);i--;}

UpdateData(false);//更新显示编辑框变量m_display

}

九、倒数函数

voidCMyCalculatorDlg:

:

OnButtonReciprocal()

{

//TODO:

Addyourcontrolnotificationhandlercodehere

if(fabs(m_second)<0.000001)

{m_display="除数不能为零";

UpdateData(false);

return;

}

m_second=1.0/m_second;

UpdateDisplay(m_second);

}

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