jisuandlg.cpp

能进行 +、-、*、/算术运算

// JISUANDlg.cpp : implementation file
//

#include "stdafx.h"
#include "JISUAN.h"
#include "JISUANDlg.h"
#include <math.h>

#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()

/////////////////////////////////////////////////////////////////////////////
// CJISUANDlg dialog

CJISUANDlg::CJISUANDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CJISUANDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CJISUANDlg)
	m_text = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	flgPressDot=false;
	flgPrevOptlsCacu=false;
//	flgeqest=false;
	ZF = '-';



}

void CJISUANDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CJISUANDlg)
	DDX_Text(pDX, IDC_EDIT1, m_text);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CJISUANDlg, CDialog)
	//{{AFX_MSG_MAP(CJISUANDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTT7, OnButt7)
	ON_BN_CLICKED(IDC_BUTT8, OnButt8)
	ON_BN_CLICKED(IDC_BUTT9, OnButt9)
	ON_BN_CLICKED(IDC_BUTT4, OnButt4)
	ON_BN_CLICKED(IDC_BUTT5, OnButt5)
	ON_BN_CLICKED(IDC_BUTT6, OnButt6)
	ON_BN_CLICKED(IDC_BUTT1, OnButt1)
	ON_BN_CLICKED(IDC_BUTT2, OnButt2)
	ON_BN_CLICKED(IDC_BUTT3, OnButt3)
	ON_BN_CLICKED(IDC_BUTT0, OnButt0)
	ON_BN_CLICKED(IDC_BUTTKong, OnBUTTKong)
	ON_BN_CLICKED(IDC_BUTTJia, OnBUTTJia)
	ON_BN_CLICKED(IDC_BUTTDengYu, OnBUTTDengYu)
	ON_BN_CLICKED(IDC_BUTTJian, OnBUTTJian)
	ON_BN_CLICKED(IDC_BUTTChen, OnBUTTChen)
	ON_BN_CLICKED(IDC_BUTTChu, OnBUTTChu)
	ON_BN_CLICKED(IDC_BUTTZF, OnButtzf)
	ON_BN_CLICKED(IDC_BUTTSqrt, OnBUTTSqrt)
	ON_BN_CLICKED(IDC_BUTTDian, OnBUTTDian)
	ON_BN_CLICKED(IDC_BUTTKong2, OnBUTTKong2)
	ON_BN_CLICKED(IDC_BUTTKong3, OnBUTTKong3)
	ON_COMMAND(IDM_GuanYu,OnAboutClk) 
	ON_BN_CLICKED(IDC_BUTTDaoShu, OnBUTTDaoShu)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CJISUANDlg message handlers

BOOL CJISUANDlg::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
	m_edit.SubclassDlgItem(IDC_EDIT1,this);
	m_text = "0.";
	UpdateData(false);

	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CJISUANDlg::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 CJISUANDlg::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 CJISUANDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CJISUANDlg::OnAboutClk()
{
	CAboutDlg dlg;
	dlg.DoModal();
}



void CJISUANDlg::AddNum(int theNum) //此函数的作用是把输入的数据显示到文本框中
{


	char oldText[100]= "";
	char newText[100]= "";
	strcpy(oldText,m_text);
	if(	flgPrevOptlsCacu==true)
	{
		strcpy(oldText,"0.");
		flgPrevOptlsCacu=false;
	}
	if(false==flgPressDot)
	{
		double oldNum=atof(oldText);
		double newNum=oldNum*10+theNum;

		sprintf(newText,"%f",newNum);
		TrimZero(newText);
		m_text=newText;
		UpdateData(false);
	}else{
		TrimZero(newText);
		sprintf(newText,"%s%d",oldText,theNum);
	
		m_text=newText;
		UpdateData(false);
	}
}


void CJISUANDlg::OnButt7() 
{
	// TODO: Add your control notification handler code here
	AddNum(7);
}

void CJISUANDlg::OnButt8() 
{
	// TODO: Add your control notification handler code here
	AddNum(8);
}

void CJISUANDlg::OnButt9() 
{
	// TODO: Add your control notification handler code here
	AddNum(9);
}

void CJISUANDlg::OnButt4() 
{
	// TODO: Add your control notification handler code here
	AddNum(4);
}

void CJISUANDlg::OnButt5() 
{
	// TODO: Add your control notification handler code here
	AddNum(5);
}

void CJISUANDlg::OnButt6() 
{
	// TODO: Add your control notification handler code here
	AddNum(6);
}

void CJISUANDlg::OnButt1() 
{
	// TODO: Add your control notification handler code here
	AddNum(1);
}

void CJISUANDlg::OnButt2() 
{
	// TODO: Add your control notification handler code here
	AddNum(2);
}

void CJISUANDlg::OnButt3() 
{
	// TODO: Add your control notification handler code here
	AddNum(3);
}

void CJISUANDlg::OnButt0() 
{
	// TODO: Add your control notification handler code here
	AddNum(0);
}

void CJISUANDlg::OnBUTTKong() 
{
	// TODO: Add your control notification handler code here

	
	flgPressDot=false;

	m_text = "0. ";
	num1 = 0.0;
	num2 = 0.0;
	num = 0.0;
//	flgeqest=false;
	UpdateData(false);
}

void CJISUANDlg::OnBUTTJia() 
{
	// TODO: Add your control notification handler code here
	flgPrevOptlsCacu=true;
	
	flgPressDot=false;


	c = '+';
	num1 = atof(m_text);
	
	m_text = "";
	//flgeqest=true;

}

void CJISUANDlg::OnBUTTDengYu() 
{
	// TODO: Add your control notification handler code here
	num2 = atof(m_text);
	switch(c)
	{
		case '+': 
			num = num1 + num2;
			/*if(flgeqest==true)
			{
				num1=num2;
			}*/
			break;
		case '-': 
			num = num1 - num2;
			break;
		case '*': 
			num = num1 * num2;
			break;
		case '/': 
			num = num1 / num2;	  
			break;
	}
	sprintf(m_num,"%lf",num);

	funszNizhi(m_num);
	m_text = m_num;
	UpdateData(false);
}

void CJISUANDlg::OnBUTTJian() 
{
	// TODO: Add your control notification handler code here
	
	flgPressDot=false;
	c = '-';
	num1 = atof(m_text);
	m_text = "";
}

void CJISUANDlg::OnBUTTChen() 
{
	// TODO: Add your control notification handler code here
	
	flgPressDot=false;
	c = '*';
	num1 = atof(m_text);
	m_text = "";
}

void CJISUANDlg::OnBUTTChu() 
{
	// TODO: Add your control notification handler code here
	
	flgPressDot=false;
	c = '/';
	num1 = atof(m_text);
	m_text = "";
}

void CJISUANDlg::OnButtzf()
{   

	
	char ZF_text[100] = "";
	double num;
	num = atof(m_text);
	// TODO: Add your control notification handler code here
	
	switch(ZF)
	{
		
		flgPressDot=false;
		case '-':
			num = -1 * num;
			sprintf(ZF_text,"%lf",num);
			m_text = ZF_text;
			ZF = '+';
			break;
		case '+':
			num = -1 * num;
			sprintf(ZF_text,"%lf",num);
			m_text = ZF_text;
			ZF = '-';
			break;
	}
	UpdateData(false);
}

void CJISUANDlg::OnBUTTSqrt() 
{
	// TODO: Add your control notification handler code here
	double theNum;
	char textNum[100] = "";
	theNum = atof(m_text);
	sprintf(textNum,"%lf",sqrt(theNum));
	funszNizhi(textNum);
	m_text = textNum;
	UpdateData(false);
}


void CJISUANDlg::funszNizhi(char *szNum)
{
	int nLen=strlen(szNum)-1;
    for(;nLen>=0;nLen--)
    {
        if(*(szNum+nLen)=='0' || *(szNum+nLen)=='.')
            *(szNum+nLen)='\0';
        else
            break;
    }
}

void CJISUANDlg::OnBUTTDian() 
{
	// TODO: Add your control notification handler code here
		flgPressDot=true;
}

void CJISUANDlg::TrimZero(char *szText)
{
	char *p;
	char szNewText[100]="";
	int nLen = strlen(szText);
	p = szText;
	p = p+nLen-1;
	int nTrimCount=0;
	for(int i=0;i<nLen;i++)
	{if(*p!='0')
		{
		break;
		}
		nTrimCount++;
		p--;
	}
	p=szText;
	for(i=0;i<nLen-nTrimCount;i++)
	{
		sprintf(szNewText,"%s%c",szNewText,*p);
		p++;

	}
	strcpy(szText,szNewText);

}

void CJISUANDlg::OnBUTTKong2() 
{
	// TODO: Add your control notification handler code here
	flgPressDot=false;
	m_text = "0. ";
	num1 = 0.0;
	num2 = 0.0;
	num = 0.0;
	UpdateData(false);
}

void CJISUANDlg::OnBUTTKong3() 
{
	// TODO: Add your control notification handler code here
	double theNum;
	char textNum[100] = "";
	theNum = atol(m_text)/10;
	sprintf(textNum,"%lf",theNum);
	
	m_text = textNum;
		if(theNum == 0)
		{
		m_text = "0.";
		}
	UpdateData(false);

	
}

void CJISUANDlg::OnBUTTDaoShu() 
{
	// TODO: Add your control notification handler code here
	double theNum;
	char textNum[100] = "";
	theNum = 1/atof(m_text);
	sprintf(textNum,"%lf",theNum);
	
	m_text = textNum;
	UpdateData(false);
}