autocompletecombobox.cpp

来自「VC++编程宝典,电子工业出版社出版,源代码,第一部分」· C++ 代码 · 共 71 行

// AutoCompleteComboBox.cpp : implementation file
//

#include "stdafx.h"
#include "AddressBook.h"
#include "AutoCompleteComboBox.h"

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

/////////////////////////////////////////////////////////////////////////////
// CAutoCompleteComboBox

CAutoCompleteComboBox::CAutoCompleteComboBox()
{
}

CAutoCompleteComboBox::~CAutoCompleteComboBox()
{
}


BEGIN_MESSAGE_MAP(CAutoCompleteComboBox, CComboBox)
	//{{AFX_MSG_MAP(CAutoCompleteComboBox)
	ON_CONTROL_REFLECT(CBN_EDITUPDATE, OnEditupdate)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CAutoCompleteComboBox message handlers

void CAutoCompleteComboBox::OnEditupdate()
{
 if (m_bFindNearestMatch)
 {
  char szEntry[CHAR_MAX];
  int nLen = GetWindowText(szEntry,
   CHAR_MAX);

  int iIndex;
  if (CB_ERR != (iIndex = FindString(-1,
   szEntry)))
  {
   SetCurSel(iIndex);
   SetEditSel(nLen, -1);
  }
 }
}

BOOL CAutoCompleteComboBox::PreTranslateMessage(
 MSG* pMsg)
{
 if (WM_KEYDOWN == pMsg->message)
 {
  if ((VK_BACK == pMsg->wParam)
  || (VK_DELETE == pMsg->wParam))
  {
   m_bFindNearestMatch = FALSE;
  }
  else
  {
   m_bFindNearestMatch = TRUE;
  }
 }

 return CComboBox::PreTranslateMessage(pMsg);
}