loadtxtdlg.cpp

利用VC++读入文本文件

// LoadTxtDlg.cpp : implementation file
//

#include "stdafx.h"
#include "LoadTxt.h"
#include "LoadTxtDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CLoadTxtDlg dialog

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

void CLoadTxtDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CLoadTxtDlg)
	DDX_Text(pDX, IDC_SHOW_STATIC, m_ShowStr);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CLoadTxtDlg, CDialog)
	//{{AFX_MSG_MAP(CLoadTxtDlg)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CLoadTxtDlg message handlers

BOOL CLoadTxtDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// 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
}

// 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 CLoadTxtDlg::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 CLoadTxtDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CLoadTxtDlg::OnOK() 
{
	CFile File;
	DWORD Length,i=18,Pos=0;
	char *str;
	float *Data[4];
	CString Line;
	CFileDialog Open(TRUE,"*.txt",NULL,OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT
		,"Text Files (*.txt)|*.txt|All Files (*.*)|*.*||",NULL);
	if(Open.DoModal()==IDOK)
	{
		if(File.Open(Open.GetPathName(),CFile::modeRead,NULL))
		{
			m_ShowStr.Empty();
			Length=File.GetLength();
			str=new char[Length+1];
			File.ReadHuge(str,Length);
			File.Close();
			str[Length]=0;
			m_ShowStr=str;			
			delete str;
			do{Line=m_ShowStr.Right(i++);}while(Line[0]!='\n');
			Length=atoi(Line.Left(Line.Find(' ')));
			for(i=0;i<4;i++) Data[i]=new float[Length];
			for(i=0;i<Length;i++)
			{
				Pos=m_ShowStr.Find(' ',Pos+1)+1;
				Data[0][i]=atof(m_ShowStr.Mid(Pos,4));
				Data[1][i]=atof(m_ShowStr.Mid(Pos+5,4));
				Data[2][i]=atof(m_ShowStr.Mid(Pos+10,5));
				Data[3][i]=atof(m_ShowStr.Mid(Pos+16,2));
			}
			UpdateData(FALSE);
		}
	}
}

void CLoadTxtDlg::OnCancel() 
{
	CDialog::OnCancel();
}