li5_6dlg.cpp

VC下做的计算器,适合初学者熟悉基于对话框的消息和控件响应机智

// Li5_6Dlg.cpp : implementation file
//

#include "stdafx.h"
#include "Li5_6.h"
#include "Li5_6Dlg.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()

/////////////////////////////////////////////////////////////////////////////
// CLi5_6Dlg dialog

CLi5_6Dlg::CLi5_6Dlg(CWnd* pParent /*=NULL*/)
	: CDialog(CLi5_6Dlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CLi5_6Dlg)
	m_result = 0.0;
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	m_NumberCount=1;
	m_OperationCount=1;
	for(int i=0;i<15;i++)
	{
		m_Number[i]=0;
		m_Operation[i]=999;
	}
}

void CLi5_6Dlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CLi5_6Dlg)
	DDX_Text(pDX, IDC_EDIT_PUTOUT, m_result);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CLi5_6Dlg, CDialog)
	//{{AFX_MSG_MAP(CLi5_6Dlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_COMMAND_RANGE(IDC_NUMBER1,IDC_NUMBER0, OnNumberKey)
	ON_COMMAND_RANGE(IDC_ADD, IDC_RECIPROCAL,OnOperationKey)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CLi5_6Dlg message handlers

BOOL CLi5_6Dlg::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 CLi5_6Dlg::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 CLi5_6Dlg::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 CLi5_6Dlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CLi5_6Dlg::OnNumberKey(UINT nID) 
{
	// TODO: Add your control notification handler code here
	///MessageBox("数字");
	int n;
	switch(nID)
	{
	case IDC_NUMBER1:
		n=1;
		break;
	case IDC_NUMBER2:
		n=2;
		break;
	case IDC_NUMBER3:
		n=3;
		break;
	case IDC_NUMBER4:
		n=4;
		break;
	case IDC_NUMBER5:
        n=5;
        break;
    case IDC_NUMBER6:
        n=6;
        break;
    case IDC_NUMBER7:
        n=7;
        break;
    case IDC_NUMBER8:
        n=8;
        break;
    case IDC_NUMBER9:
        n=9;
        break;
    case IDC_NUMBER0:
        n=0;
        break;
	}
	m_Number[m_NumberCount]=m_Number[m_NumberCount]*10+n;
	m_result=1.0*m_Number[m_NumberCount];
	UpdateData(false);//在编辑框中显示操作数
	
}

void CLi5_6Dlg::OnOperationKey(UINT nID) 
{
	// TODO: Add your control notification handler code here
	//MessageBox("运算");
	switch(nID)
	{ int i;
	case IDC_ADD:
		m_Operation[m_OperationCount]=1;
		break;
	case IDC_SUBTRACT:
		m_Operation[m_OperationCount]=2;
		break;
	case IDC_MULTIPLY:
		m_Operation[m_OperationCount]=3;
		break;
	case IDC_DIVIDE:
		m_Operation[m_OperationCount]=4;
		break;
     case IDC_MINUS:
	m_Number[m_NumberCount]=-m_Number[m_NumberCount];
    break;
	case IDC_SQRT:
	m_Number[m_NumberCount]=sqrt(m_Number[m_NumberCount]);
    break;
	case IDC_RECIPROCAL:
	m_Number[m_NumberCount]=(double)1/m_Number[m_NumberCount];
    break;
	case IDC_BACK:
    m_Number[m_NumberCount]=(int)m_Number[m_NumberCount]/10;
	m_result=m_Number[m_NumberCount];
	UpdateData(false);
	break;
	case IDC_CLEAR:
		for(i=1;i<11;i++)
		{
			m_Number[i]=0;
			m_Operation[m_OperationCount]=999;
			m_NumberCount=1;
			m_OperationCount=1;
			m_result=0;
			UpdateData(false);
		}
		break;

	case IDC_RESULT:
		cal();
		break;
	}
	if(m_Operation[m_OperationCount]<5)
	{m_NumberCount++;
	m_OperationCount++;
	}
}

void CLi5_6Dlg::cal()
{
	for(int i=1;i<15;i++)
	{
		switch(m_Operation[i])
		{
		case 3:
		   m_Number[i]=m_Number[i+1]=m_Number[i]*m_Number[i+1];
           //m_Number[i]=0;
		   m_Operation[i]=m_Operation[i-1];//1
		   break;
		case 4:
		   m_Number[i]=m_Number[i+1]=(double)m_Number[i]/m_Number[i+1];
           //m_Number[i]=0;
		   m_Operation[i]=m_Operation[i-1];
		   break;
		}
	}
	m_result=m_Number[1];
	for(i=1;i<15;i++)
	{
		if(m_Operation[i]==1)
			m_result=m_result+m_Number[i+1];
		else if(m_Operation[i]==2)
			m_result=m_result-m_Number[i+1];
	}
	UpdateData(false);
}