ex3_1dlg.cpp

信息录入系统

// ex3_1Dlg.cpp : implementation file
//

#include "stdafx.h"
#include "ex3_1.h"
#include "ex3_1Dlg.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()

/////////////////////////////////////////////////////////////////////////////
// CEx3_1Dlg dialog

CEx3_1Dlg::CEx3_1Dlg(CWnd* pParent /*=NULL*/)
	: CDialog(CEx3_1Dlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CEx3_1Dlg)
	m_name = _T("");
	m_age = 0;
	m_height = 0.0f;
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDI_ICON2);
}

void CEx3_1Dlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CEx3_1Dlg)
	DDX_Control(pDX, IDC_BUTTON3, m_next);
	DDX_Control(pDX, IDC_BUTTON2, m_before);
	DDX_Text(pDX, IDC_EDIT1, m_name);
	DDV_MaxChars(pDX, m_name, 20);
	DDX_Text(pDX, IDC_EDIT2, m_age);
	DDV_MinMaxInt(pDX, m_age, 0, 100);
	DDX_Text(pDX, IDC_EDIT3, m_height);
	DDV_MinMaxFloat(pDX, m_height, 0.f, 3.f);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CEx3_1Dlg, CDialog)
	//{{AFX_MSG_MAP(CEx3_1Dlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
	ON_BN_CLICKED(IDC_BUTTON4, OnButton4)
	ON_BN_CLICKED(IDC_BUTTON3, OnButton3)
	ON_BN_CLICKED(IDC_BUTTON2, OnButton2)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CEx3_1Dlg message handlers

BOOL CEx3_1Dlg::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_num=0;
	m_num1=0;
	SetWindowText("信息录入");
	m_before.EnableWindow(false);
	m_next.EnableWindow(false);


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

void CEx3_1Dlg::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 CEx3_1Dlg::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 CEx3_1Dlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CEx3_1Dlg::OnButton1() 
{
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);
	
	CFile file;
	if(m_num==0)
	{CFileDialog dlg(false,NULL,"*.inb",OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT,"信息文件(*.inb)|*.inb||");
	 if (dlg.DoModal()!=IDOK)  return;
	 m_filename=dlg.GetPathName();
	 file.Open(m_filename,CFile::modeCreate|CFile::modeWrite);
	}
	else
	{
	
        
		file.Open(m_filename,CFile::modeWrite);
	}
	
    m_num=1;
	
    file.SeekToEnd();
	CArchive ar(&file,CArchive::store);
    ar<<m_name;
	ar<<m_age;
	ar<<m_height;
	ar.Close();
    file.Close();
	m_name="";
	m_age=0;
	m_height=0;
	UpdateData(false);


 }

void CEx3_1Dlg::OnButton4() 
{
	// TODO: Add your control notification handler code here
	CFile file;
	if(m_num1==0)
	{
       CFileDialog dlg(true,NULL,"*.inb",OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT,"信息文件(*.inb)|*.inb||");
	   if(dlg.DoModal()!=IDOK)  return;
	   m_filename1=dlg.GetPathName();
	}

    m_num1=1;
    file.Open(m_filename1,CFile::modeRead);
	file.SeekToBegin();

    CArchive ar(&file,CArchive::load);
    ar>>m_name;
	ar>>m_age;
	ar>>m_height;
    ar.Close();
    index=file.GetPosition();
    file.Close();
	UpdateData(false);
	m_next.EnableWindow(true);

}

void CEx3_1Dlg::OnButton3() 
{
	// TODO: Add your control notification handler code here
	m_before.EnableWindow(true);
    CFile file;
	file.Open(m_filename1,CFile::modeRead);
    file.Seek(index,CFile::begin);
    index1=index;
    CArchive ar(&file,CArchive::load);
    ar>>m_name;
	ar>>m_age;
	ar>>m_height;
    ar.Close();
    index=file.GetPosition();
	if(index>=file.GetLength())
	{
		m_next.EnableWindow(false);
	    index=index1;
	}
    file.Close();
	UpdateData(false);
}

void CEx3_1Dlg::OnButton2() 
{
	// TODO: Add your control notification handler code here
    CFile file;
    file.Open(m_filename1,CFile::modeRead);
	file.SeekToBegin();
    index=file.GetPosition();
    CArchive ar(&file,CArchive::load);
    ar>>m_name;
	ar>>m_age;
	ar>>m_height;
    ar.Close();
    index=file.GetPosition();
    file.Close();
    m_next.EnableWindow(true);
	m_before.EnableWindow(false);
	UpdateData(false);
 
}