sampledlg.cpp

Convert unicode to ancii

// SampleDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Sample.h"
#include "SampleDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CSampleDlg dialog

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

void CSampleDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CSampleDlg)
	DDX_Text(pDX, IDC_EDIT_TEXT, m_Text);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CSampleDlg, CDialog)
	//{{AFX_MSG_MAP(CSampleDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON_LOAD, OnButtonLoad)
	ON_BN_CLICKED(IDC_BUTTON_SAVE, OnButtonSave)
	ON_BN_CLICKED(IDC_BUTTON_SAVE_ANSI, OnButtonSaveAnsi)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CSampleDlg message handlers

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

void CSampleDlg::OnButtonLoad() 
{
	// TODO: Add your control notification handler code here
	
	CFileDialog fileDlg( TRUE, _T("*.txt"), _T(""), OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT, 
		_T("Text Files (*.txt)|*.txt|All Files (*.*)|*.*||"), NULL );
	if ( fileDlg.DoModal() == IDOK )
	{
		m_Text = _T("");
		CString strText = _T("");

		CString strFile = fileDlg.GetPathName();

		// Reading buffer
		_TCHAR buffer[1024];

		// Byte-order mark goes at the begining of the UNICODE file
		_TCHAR bom;

		CFile* pFile = new CFile();
		pFile->Open( strFile, CFile::modeRead );
		pFile->Read( &bom, sizeof(_TCHAR) );
		pFile->Close();

		// If we are reading UNICODE file
		if ( bom == _TCHAR(0xFEFF ) )
		{
			CFile* pFile = new CFile();
			pFile->Open( strFile, CFile::modeRead );
			pFile->Read( &bom, sizeof(_TCHAR) );
			UINT ret = pFile->Read( buffer, _tcslen(buffer)*sizeof(_TCHAR) );
			while ( ret != 0 )
			{
				buffer[ret] = _T('\0');

				strText = buffer;

				// Release extra characters
				int nLen = strText.GetLength();
				strText = strText.Left( nLen/2 );

				m_Text += strText;

				ret = pFile->Read( buffer, _tcslen(buffer)*sizeof(_TCHAR) );
			}
			pFile->Close();
		}
		// If we are reading ANSI file
		else
		{
			m_Text = _T("");
			CString strText = _T("");

			CStdioFile* pStdioFile = new CStdioFile();
			pStdioFile->Open( strFile, CFile::modeRead );
			while ( pStdioFile->ReadString( strText ) )
			{
				m_Text += strText;
				m_Text += _T("\r\n");
			}
			pStdioFile->Close();
		}

		UpdateData( FALSE );
	}
}

void CSampleDlg::OnButtonSave() 
{
	// TODO: Add your control notification handler code here

	UpdateData( TRUE );

	CFileDialog fileDlg( FALSE, _T("*.txt"), _T(""), OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT, 
		_T("Text Files (*.txt)|*.txt|All Files (*.*)|*.*||"), NULL );
	if ( fileDlg.DoModal() == IDOK )
	{
		CString strFile = fileDlg.GetPathName();

		// Byte-order mark goes at the begining of the UNICODE file
		_TCHAR bom = (_TCHAR)0xFEFF;
		
		CFile* pFile = new CFile();
		pFile->Open( strFile, CFile::modeCreate | CFile::modeWrite );
		pFile->Write( &bom, sizeof(_TCHAR) );
		pFile->Write( LPCTSTR(m_Text), m_Text.GetLength()*sizeof(_TCHAR) );
		pFile->Close();
	}
}

void CSampleDlg::OnButtonSaveAnsi() 
{
	// TODO: Add your control notification handler code here

	UpdateData( TRUE );

	CFileDialog fileDlg( FALSE, _T("*.txt"), _T(""), OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT, 
		_T("Text Files (*.txt)|*.txt|All Files (*.*)|*.*||"), NULL );
	if ( fileDlg.DoModal() == IDOK )
	{
		CString strFile = fileDlg.GetPathName();

		// Saving file as ANSI
		CStdioFile* pStdioFile = new CStdioFile();
		pStdioFile->Open( strFile, CFile::modeCreate | CFile::modeWrite );
		pStdioFile->WriteString( m_Text );
		pStdioFile->Close();
	}
}