ex08_1dlg.cpp

文件内容的存储

// Ex08_1Dlg.cpp : implementation file
//

#include "stdafx.h"
#include "Ex08_1.h"
#include "Ex08_1Dlg.h"
#include "Afxdlgs.h"
#include "fstream.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()

/////////////////////////////////////////////////////////////////////////////
// CEx08_1Dlg dialog

CEx08_1Dlg::CEx08_1Dlg(CWnd* pParent /*=NULL*/)
	: CDialog(CEx08_1Dlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CEx08_1Dlg)
	m_WriteString = _T("");
	m_FilePath = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CEx08_1Dlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CEx08_1Dlg)
	DDX_Control(pDX, IDC_READ, m_ctrlReadList);
	DDX_Text(pDX, IDC_WRITE, m_WriteString);
	DDX_Text(pDX, IDC_FILEPATH, m_FilePath);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CEx08_1Dlg, CDialog)
	//{{AFX_MSG_MAP(CEx08_1Dlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON_WRITE, OnButtonWrite)
	ON_BN_CLICKED(IDC_BUTTON_FILEPATH, OnButtonFilepath)
	ON_BN_CLICKED(IDC_BUTTON_READ, OnButtonRead)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CEx08_1Dlg message handlers

BOOL CEx08_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
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CEx08_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 CEx08_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 CEx08_1Dlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CEx08_1Dlg::OnButtonWrite() //单击"写入到文件…"按钮
{
	// TODO: Add your control notification handler code here
	UpdateData(true);
	CFile file;
	CFileDialog	filedlg(0, // 1-文件打开, 0-文件另存为
                         ".txt|*.*",
						 NULL,
		              	OFN_OVERWRITEPROMPT ,
						 " 文本文件(*.txt)|*.txt|All Files (*.*)|*.*||",
						 NULL);
	if(filedlg.DoModal()==IDOK)
    filename=filedlg.GetFileName();//获得文件名
	if(filename=="")
    {
		AfxMessageBox("请输入文件名!");
        return;
	}

    file.Open(filename,CFile::modeCreate|CFile::modeWrite);//将数据写入文件
   	int length=m_WriteString.GetLength( );
	file.Write((LPCTSTR)m_WriteString,length);//获取有关文件的信息CString	
	AfxMessageBox("已保存到文件:  "+filename+"!");//保存结束提示
	filepath=file.GetFilePath( );//获得文件的路径
    file.Close();//关闭文件
}

void CEx08_1Dlg::OnButtonFilepath() //单击“查看文件路径”按钮
{
	// TODO: Add your control notification handler code here
	m_FilePath=filepath;
	UpdateData(false);
}

void CEx08_1Dlg::OnButtonRead() //单击“从文件读入...”按钮
{
	// TODO: Add your control notification handler code here
	fstream f1;//定义文件流对象
	char s[81];
	CFileDialog	filedlg(1, // 1-文件打开, 0-文件另存为
                         ".txt|*.*",
						 NULL,
			             OFN_OVERWRITEPROMPT ,
						 " 文本文件(*.txt)|*.txt|All Files (*.*)|*.*||",
						 NULL);
	if(filedlg.DoModal()==IDOK)
	{
	
	
           filename=filedlg.GetFileName();//获得文件名
			if(!IsTextFile(filename))//判断文件类型是否正确
			{
				AfxMessageBox("文件类型不正确!");
				return;
			}
			f1.open(filename, ios::in|ios::nocreate);
			filepath=filedlg.GetPathName( );//获得文件路径
			if(!f1.good())
			    m_ctrlReadList.ResetContent();//清空列表框
        	while(!f1.eof())
			{
				f1.getline(s, 255);
			    m_ctrlReadList.AddString(s);//添加文件中的文本到列表框
        	}
	        UpdateData(false);
	        AfxMessageBox(filename+"文件读入完毕!");//保存结束提示
	    	f1.close();//关闭文件流
	}
}

BOOL CEx08_1Dlg::IsTextFile(CString &rFile)//判断文件类型
{
	CStringList strList;
	CString str(rFile);
	strList.AddHead(".TXT");
	strList.AddHead(".SYS");
	strList.AddHead(".BAT");
	strList.AddHead(".DAT");
	str = str.Right(4);
	str.MakeUpper();
	return (strList.Find(str))? TRUE:FALSE;
}