historyedit.cpp

C++编程实践与技巧一书各章节的源码

// HistoryEdit.cpp

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

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

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

CHistoryEdit::CHistoryEdit()
{
}

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
  (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);
}