calculatordlg.cpp

c++语言界面设计

// calculatorDlg.cpp : implementation file
//
#include "stdafx.h"
#include "calculator.h"
#include "calculatorDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CCalculatorDlg dialog


CCalculatorDlg::CCalculatorDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CCalculatorDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CCalculatorDlg)
	m_nnum = 0;
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CCalculatorDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CCalculatorDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	DDX_Text(pDX, IDC_EDITDIS, m_nnum);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CCalculatorDlg, CDialog)
	//{{AFX_MSG_MAP(CCalculatorDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON0, OnEnternum)
	ON_BN_CLICKED(IDC_PLUS, OnComputer)
	ON_BN_CLICKED(IDC_EQUALL, OnEquall)
	ON_BN_CLICKED(IDC_BUTTONCLS, OnButtoncls)
	ON_BN_CLICKED(IDC_MULTIPLY, OnComputer)
	ON_BN_CLICKED(IDC_DEVIDE, OnComputer)
	ON_BN_CLICKED(IDC_ADD, OnComputer)
	ON_BN_CLICKED(IDC_BUTTON1, OnEnternum)
	ON_BN_CLICKED(IDC_BUTTON2, OnEnternum)
	ON_BN_CLICKED(IDC_BUTTON3, OnEnternum)
	ON_BN_CLICKED(IDC_BUTTON4, OnEnternum)
	ON_BN_CLICKED(IDC_BUTTON5, OnEnternum)
	ON_BN_CLICKED(IDC_BUTTON6, OnEnternum)
	ON_BN_CLICKED(IDC_BUTTON7, OnEnternum)
	ON_BN_CLICKED(IDC_BUTTON8, OnEnternum)
	ON_BN_CLICKED(IDC_BUTTON9, OnEnternum)
	ON_EN_CHANGE(IDC_EDITDIS, OnChangeEditdis)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCalculatorDlg message handlers

BOOL CCalculatorDlg::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
	//初始化
    m_ncomflag = 0;
	m_nnum = 0;
	UpdateData(FALSE);	
	return TRUE; 
	// return TRUE  unless you set the focus to a control
}

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


void CCalculatorDlg::OnEnternum() 
{
	// TODO: 我的数字Add your control notification handler code here
	CString strnum,strold;
	this->GetDlgItemText(IDC_EDITDIS,strold);
	this->GetFocus()->GetWindowText(strnum);
	//m_nnum=atoi((char*)&strnum);
	if(m_bnext)
	{  
		this->SetDlgItemText(IDC_EDITDIS,strnum);
		m_bnext = false;
	}
	else
	{
		if(strold == "0")
			this->SetDlgItemText(IDC_EDITDIS,strnum);
		else
			this->SetDlgItemText(IDC_EDITDIS,strold+strnum);
	}
	 UpdateData(true);
	 TRACE("%d",m_nnum);
}




void CCalculatorDlg::OnComputer() 
{
	// TODO:我的符号 Add your control notification handler code here
	CString stroper;
	m_ncomflag ++;
	m_bnext = TRUE;
	if(m_ncomflag > 1)
	{
		m_numold = computer(m_numold,m_oper);
		this->GetFocus()->GetWindowText(stroper);
		if(stroper == "+")  m_oper = add;
        if(stroper == "-")  m_oper = plus;
        if(stroper == "*")  m_oper = multiply;
        if(stroper == "/")  m_oper = devide;
	}
	else
	{
		this->GetFocus()->GetWindowText(stroper);
		if(stroper == "+") m_oper = add;
        if(stroper == "-") m_oper = plus;
        if(stroper == "*") m_oper = multiply;
        if(stroper == "/") m_oper = devide;
		m_numold = m_nnum;
	}
	m_nnum = m_numold;
	UpdateData(false);
}

//调用函数 computer()
float CCalculatorDlg::computer(float num,operation m_oper)
{
	float result;
	switch(m_oper)
	{
	case add:
		result = num + m_nnum;
		break;
	case plus:
		result = num - m_nnum;
		break;
    case multiply:
		result = num * m_nnum;
		break;
	case devide:
		if(m_nnum == 0)
		{
			AfxMessageBox("除数为零，出错！");
			result = 0;
		}
		else
			result = num / m_nnum;
		break;
	}
	return result;
}


void CCalculatorDlg::OnEquall() 
{
	// TODO: Add your control notification handler code here
	m_ncomflag = 0;    //考虑处理当按操作符后直接按等于号的情况
	if(!m_bnext)
	{
		m_numold = computer(m_numold,m_oper);
		m_nnum = m_numold;
		UpdateData(FALSE);
		m_bnext=true;
	}	
}

void CCalculatorDlg::OnButtoncls() 
{
	// TODO: Add your control notification handler code here
	this->SetDlgItemText(IDC_EDITDIS,"0");
	m_numold = 0;	
}



void CCalculatorDlg::OnChangeEditdis() 
{
	// TODO: If this is a RICHEDIT control, the control will not
	// send this notification unless you override the CDialog::OnInitDialog()
	// function and call CRichEditCtrl().SetEventMask()
	// with the ENM_CHANGE flag ORed into the mask.
	
	// TODO: Add your control notification handler code here
	
}