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class COpenWnd:public CFrameWnd
{
public:
	COpenWnd(CWnd *wnd);
};
COpenWnd::COpenWnd(CWnd *wndPerent)
{
CRect rectWnd(25,25,700,500);
Create(NULL, "Opened file", WS_OVERLAPPEDWINDOW | WS_HSCROLL |WS_VSCROLL , rectWnd, wndPerent, NULL);
}

void CMyFrameWin::OnOpen()
  {
	CString m_Text, path;
	CFileDialog dlgOpen(TRUE, "txt","", 
	OFN_HIDEREADONLY, "BLOKNOT (*.txt)| *.txt| VISUAL C++ (*.cpp)| *.cpp| ALL Files(*.*)|*.*|", this);

	if(dlgOpen.DoModal()==IDOK)
	{
		CStdioFile File(dlgOpen.GetPathName(), CFile::modeRead| CFile::typeBinary);
		CString & ref=m_Text;
		path=dlgOpen.GetPathName();
		COpenWnd *OpenWnd=new COpenWnd(this);
		OpenWnd -> ShowWindow(SW_SHOWNORMAL);
		OpenWnd -> UpdateWindow();
		CClientDC dc(OpenWnd);
		int y=30;
CFont l_font; 
l_font.CreatePointFont(150,"Lucida Console"); 
CFont* l_old_font = dc.SelectObject(&l_font);
		dc.TextOut(10,10,path);
dc.SelectObject(l_old_font);

		while (File.ReadString(ref)!=NULL)
		{
CFont l_font; 
l_font.CreatePointFont(150,"Lucida Console"); 
CFont* l_old_font = dc.SelectObject(&l_font);
    
		dc.SetTextColor(RGB(y*10,y+19,y+50));
		dc.TextOut(30,y,m_Text, strlen(m_Text)-1);
		y=y+45;
		dc.SelectObject(l_old_font); 
		}
	}
  }

class COpenDialog : public CDialog
{
public:
	afx_msg BOOL OnSetCursor( CWnd* pWnd, UINT nHitTest, UINT message );
	COpenDialog(CWnd* pParent = NULL);  
		enum { IDD = IDD_DIALOG_OPEN};
	CEdit    m_EditOpen;
	CEdit    m_bOpen;
protected:
	virtual void DoDataExchange(CDataExchange* pDX);    
protected:
	virtual void OnOK();
	virtual void OnCancel();
	virtual BOOL OnInitDialog();
	afx_msg void OnPaint();
	DECLARE_MESSAGE_MAP()
public:
	afx_msg void OnStnClickedBitmap1();
 };
COpenDialog::COpenDialog(CWnd* pParent)
	: CDialog(COpenDialog::IDD, pParent)
{
}
void COpenDialog::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	DDX_Control(pDX, IDC_OPEN_PATH, m_EditOpen);
	DDX_Control(pDX, IDC_OPEN_TEXT, m_bOpen);
}

BEGIN_MESSAGE_MAP(COpenDialog, CDialog)
	ON_WM_PAINT()
	ON_WM_SETCURSOR()
	ON_STN_CLICKED(IDB_BITMAP1, &COpenDialog::OnStnClickedBitmap1)
END_MESSAGE_MAP()

///////////////////////////////////////////////////////////////////////////
BOOL COpenDialog:: OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message)
{
----bla bla bla
}
/////////////////////////////////////////////////////////////////////////////
void COpenDialog::OnPaint() 
{
----bla bla bla
}
void COpenDialog::OnOK() 

{
	CString m_EditText;
        // TODO: Add your control notification handler code here
        CString fname; //Переменная для хранения имени файла
        CFile file;    //обьект класса CFile
        char ch[1024]; //Буффер для чтения данных из файла
        if(!OpenRead) //Если OpenRead=false то показываем диалог открытия файлов
        {
                CFileDialog fDialog(TRUE);
                fDialog.DoModal();
                m_EditOpen.SetWindowText(fDialog.GetPathName());
                m_bOpen.SetWindowText("Read");
                OpenRead = true;
        }
        else 
        {
                m_EditOpen.GetWindowText(fname); //Получаем имя файла
                if(!file.Open(fname, CFile::modeRead, NULL)) //Открываем его
                {
                        AfxMessageBox("Cannot open file");
                        return;
                }
                file.Read(&ch, 1024); //Читаем 1024 байт
                //m_EditText.SetWindowText(ch);
                file.Close(); //Закрываем файл
                m_bOpen.SetWindowText("Open");//Меняем текст кнопки
                OpenRead = false;
        }


	CDialog::OnOK();
}
void COpenDialog::OnCancel() 
{
	CDialog::OnCancel();
}

BOOL COpenDialog::OnInitDialog() 
{
	CDialog::OnInitDialog();
	m_EditOpen.SetWindowText(CString("файл"));
	m_bOpen.SetWindowText(CString("содержимое"));
	UpdateData(false);
	OpenRead = false;
	return TRUE;
}

void CMyFrameWin::OnOpen()
  {

    COpenDialog dialog;		
	if(dialog.DoModal()==IDOK);
 }

 'SetWindowTextA' : is not a member of 'ATL::CStringT<BaseType,StringTraits>'

if(CreateToolhelp32Snapshot(TH32CS_SNAPMODULE, 4) == INVALID_HANDLE_VALUE)
{
      ShowMessage(IntToStr(GetLastError()));
}