ex070101dlg.cpp

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// Ex070101Dlg.cpp : implementation file
//

#include "stdafx.h"
#include "Ex070101.h"
#include "Ex070101Dlg.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()

/////////////////////////////////////////////////////////////////////////////
// CEx070101Dlg dialog

CEx070101Dlg::CEx070101Dlg(CWnd* pParent /*=NULL*/)
	: CDialog(CEx070101Dlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CEx070101Dlg)
		// 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 CEx070101Dlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CEx070101Dlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CEx070101Dlg, CDialog)
	//{{AFX_MSG_MAP(CEx070101Dlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_API_WRITE, OnApiWrite)
	ON_BN_CLICKED(IDC_API_READ, OnApiRead)
	ON_BN_CLICKED(IDC_C_WRITE, OnCWrite)
	ON_BN_CLICKED(IDC_MFC_READWRITE, OnMfcReadwrite)
	ON_BN_CLICKED(IDC_C_READ, OnCRead)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CEx070101Dlg message handlers

BOOL CEx070101Dlg::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 CEx070101Dlg::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 CEx070101Dlg::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 CEx070101Dlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

class CUser : public CObject//记录用户信息
{
	DECLARE_SERIAL(CUser) 
public:
	/*virtual*/ void Serialize( CArchive& ar );
	char	m_szName[100] ;//用户名	
	int		m_iAge ; //年龄
	CUser& operator =(const CUser &other) ;
	CUser(char* szName = "",int iAge = 0 );
};

IMPLEMENT_SERIAL(CUser,CObject,1)

CUser::CUser(char *szName, int iAge)
{
	if(strlen(szName) > 99 )
		ASSERT(false);
	
	memset(m_szName,0,sizeof(m_szName)/sizeof(m_szName[0]));
	strcpy(m_szName,szName);
	m_iAge = iAge ;
}

CUser& CUser::operator =(const CUser &other)
{
	memset(m_szName,0,sizeof(m_szName)/sizeof(m_szName[0]));
	strcpy(m_szName,other.m_szName);
	m_iAge = other.m_iAge ;
	return *this ;	
}

//系列化函数
void CUser::Serialize(CArchive &ar)
{
	CObject::Serialize(ar);
	
	if(ar.IsStoring())
	{
		for(int i = 0 ; i < sizeof(m_szName)/sizeof(m_szName[0])  ; i++ )
			ar << m_szName[i] ;
		ar << m_iAge ;
	}
	else
	{
		for(int i = 0 ; i < sizeof(m_szName)/sizeof(m_szName[0])  ; i++ )
			ar >> m_szName[i] ;
		ar >> m_iAge ;
	}
}

void CEx070101Dlg::OnApiWrite() 
{
	char* pszTxtFileName = "d:\\txt.txt" ;
	char* pszAscllFileName = "d:\\ascll.txt" ;
	DWORD dNumOfAccess ;
	
	{//API方式存文本文件
		CUser user("张三",15);		
		//打开(新建或打开文件)
		HANDLE hFile = ::CreateFile(pszTxtFileName,GENERIC_WRITE,FILE_SHARE_READ,NULL
			,CREATE_ALWAYS,FILE_ATTRIBUTE_NORMAL,NULL);
		//对数据处理后写文件			
		CString strTmp;
		strTmp.Format("%s\r\n%d",user.m_szName,user.m_iAge);
		::WriteFile(hFile,strTmp,strTmp.GetLength() ,&dNumOfAccess,NULL);		
		//关闭文件
		::CloseHandle(hFile);
	}
	
	{//API方式存二进制文件
		CUser user("李四",16);
		//打开(新建或打开文件)
		HANDLE hFile = ::CreateFile(pszAscllFileName,GENERIC_WRITE,FILE_SHARE_READ,NULL
			,CREATE_ALWAYS,FILE_ATTRIBUTE_NORMAL,NULL);
		//对数据处理后写文件
		DWORD dNumOfAccess ;	
		::WriteFile(hFile,&user,sizeof(user),&dNumOfAccess,NULL);		
		//关闭文件
		::CloseHandle(hFile);
	}
}

void CEx070101Dlg::OnApiRead() 
{
	char* pszTxtFileName = "d:\\txt.txt" ;
	char* pszAscllFileName = "d:\\ascll.txt" ;
	DWORD dNumOfAccess ;
	
	{//读文本文件
		HANDLE hFile = ::CreateFile(pszTxtFileName,GENERIC_READ,FILE_SHARE_READ,NULL
			,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);
		//取得文件长度
		int nLeng = ::SetFilePointer(hFile,0,NULL,FILE_END);
		::SetFilePointer(hFile,0,NULL,FILE_BEGIN);
		//将文件的内容全部读出来
		char *pData = new char[nLeng+1] ;
		memset(pData,0,nLeng+1);
		::ReadFile(hFile,pData,nLeng,&dNumOfAccess,NULL);
		//解析字符串
		char szName[100] ;
		int  iAge ;
		sscanf(pData,"%s\r\n%d",szName,&iAge);
		//为了便于调试,在下一行加断点,查看szName和iAge的值
		delete [] pData ;
		CloseHandle(hFile);	
	}
	
	{
		CUser user("",0) ;
		HANDLE hFile = ::CreateFile(pszAscllFileName,GENERIC_READ,FILE_SHARE_READ,NULL
			,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);
		//取得文件长度
		int nLeng = ::SetFilePointer(hFile,0,NULL,FILE_END);
		::SetFilePointer(hFile,0,NULL,FILE_BEGIN);
		//读取内容
		char *pData = new char[nLeng+1] ;
		memset(pData,0,nLeng+1);
		::ReadFile(hFile,pData,nLeng,&dNumOfAccess,NULL);
		user = *(CUser*)pData ;
		//为了便于调试,在下一行加断点,查看user的值
		delete [] pData ;
		CloseHandle(hFile);	
	}
}

void CEx070101Dlg::OnCWrite() 
{
	char* pszTxtFileName = "d:\\txt.txt" ;
	char* pszAscllFileName = "d:\\ascll.txt" ;
	
	{//文本方式写
		CUser user("张三",15) ;		
		FILE * pFile = fopen(pszTxtFileName,"wt");
		fprintf(pFile,"%s\r\n%d",user.m_szName,user.m_iAge);
		fclose(pFile);
	}
	
	{//二进制方式写
		CUser user("李四",16) ;		
		FILE * pFile = fopen(pszAscllFileName,"wb");
		fwrite(&user,sizeof(user),1,pFile);
		fclose(pFile);
	}
}

void CEx070101Dlg::OnCRead() 
{
	char* pszTxtFileName = "d:\\txt.txt" ;
	char* pszAscllFileName = "d:\\ascll.txt" ;
	
	{//文本方式读
		CUser user("",0);
		FILE * pFile = fopen(pszTxtFileName,"rt");
		fscanf(pFile,"%s\r\n%d",user.m_szName,&user.m_iAge);
		fclose(pFile);
	}
	
	{//二进制方式读
		CUser user("",0);
		FILE * pFile = fopen(pszAscllFileName,"rb");
		fread(&user,sizeof(user),1,pFile);
		fclose(pFile);
	}
}


void CEx070101Dlg::OnMfcReadwrite() 
{
	char* pszAscllFileName = "d:\\ascll.txt" ;
	
	{
		CUser user("张三",15) ;
		CFile file ;
		file.Open(pszAscllFileName,CFile::modeCreate|CFile::modeWrite);
		CArchive arFile(&file,CArchive::store) ;	
		user.Serialize(arFile) ;
		//此处加断点，查看user的新值
		arFile.Close();
		file.Close();
	}
	
	{
		CUser user ;
		CFile file ;
		file.Open(pszAscllFileName,CFile::modeRead);
		CArchive arFile(&file,CArchive::load) ;	
		user.Serialize(arFile) ;
		//此处加断点，查看user的新值
		arFile.Close();
		file.Close();
	}
}