historyedit.cpp

来自「提供加密的c/s 聊天程序。用到对称加密算法和非对称加密算法」· C++ 代码 · 共 89 行

/*
*  HistoryEdit.cpp
*
*  Description:
*    CHistoryEdit implementation
*
*    A CEdit subclass that allows you to display a text history
*    of events.
*
*  Author:
*    Ravi Bhavnani ([e-mail])
*
*  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__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CHistoryEdit

CHistoryEdit::CHistoryEdit()
{
	m_bSelectable = FALSE;
}

CHistoryEdit::~CHistoryEdit()
{
}

BEGIN_MESSAGE_MAP(CHistoryEdit, CEdit)
//{{AFX_MSG_MAP(CHistoryEdit)
ON_WM_SETFOCUS()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CHistoryEdit operations

void CHistoryEdit::AppendString// Appends a text string to the history buffer
(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);
	//UpdateData(FALSE);
	//Invalidate();
	// Scroll the edit control
	LineScroll (GetLineCount(), 0);
}

/////////////////////////////////////////////////////////////////////////////
// CHistoryEdit message handlers

void CHistoryEdit::OnSetFocus(CWnd* pOldWnd) //Don't allow user to select text
{
	// Don't allow user to select text
	if (m_bSelectable)
		CEdit::OnSetFocus (pOldWnd);
	else
		pOldWnd->SetFocus();
}

// End EditHistroy.cpp

void CHistoryEdit::Clear()//Clear
{
	SetWindowText ("");
}