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Build your own cryptographically safe server/client protocol

, 21 Jun 2006
This article presents all you need to implement your own secure protocol using variable keysize RSA encryption/decryption, digital signing, multi precision library, Diffie-Hellman key exchange, Rijndael, and more. Everything is converged into a secure IOCP client/server chat server.
*  HistoryEdit.cpp
*  Description:
*    CHistoryEdit implementation
*    A CEdit subclass that allows you to display a text history
*    of events.
*  Author:
*    Ravi Bhavnani (
*  Revision History:
*    15 Mar 1998   rab   Original version

#include "stdafx.h"
#include "HistoryEdit.h"

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

// CHistoryEdit

	m_bSelectable = FALSE;



// CHistoryEdit operations

void CHistoryEdit::AppendString
(CString str)
//  Purpose:
//    Appends a text string to the history buffer.
//  Returns:
//    None.
	CString   strBuffer;    // current contents of edit control
	// Append string
	GetWindowText (strBuffer);
	if (!strBuffer.IsEmpty())
		strBuffer += "\r\n";
	strBuffer += str;
	SetWindowText (strBuffer);
	// Scroll the edit control
	LineScroll (GetLineCount(), 0);

// CHistoryEdit message handlers

void CHistoryEdit::OnSetFocus(CWnd* pOldWnd) 
	// Don't allow user to select text
	if (m_bSelectable)
		CEdit::OnSetFocus (pOldWnd);

// End EditHistroy.cpp

void CHistoryEdit::Clear()
	SetWindowText ("");

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About the Author

Program Manager
Sweden Sweden
Amin Gholiha.
- Master of Science in Information Technology.
- Degree of Master of Education.
Knowledge/interest: programming (.NET,Visual, C#/C++), neural network, mathematical modeling, signal processing, sequence analysis, pattern recognition,robot technology, system design, security and business management systems. For business proposal email, all other emails will be ignored.
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