ComboCompletion.cpp
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ICQ弱点检测代码
开发平台:
Visual C++
- // ComboCompletion.cpp : implementation file
- //
- // Autocompleting combo-box (like the URL edit box in netscape)
- //
- // Written by Chris Maunder (cmaunder@mail.com)
- // Copyright (c) 1998.
- //
- // This code may be used in compiled form in any way you desire. This
- // file may be redistributed unmodified by any means PROVIDING it is
- // not sold for profit without the authors written consent, and
- // providing that this notice and the authors name is included. If
- // the source code in this file is used in any commercial application
- // then acknowledgement must be made to the author of this file
- // (in whatever form you wish).
- //
- // This file is provided "as is" with no expressed or implied warranty.
- //
- // Expect bugs.
- //
- // Please use and enjoy. Please let me know of any bugs/mods/improvements
- // that you have found/implemented and I will fix/incorporate them into this
- // file.
- //
- // Modified: 12 Sep 1998 Setting correct cursor position after
- // auto-complete: Petr Stejskal and Ryan Schneider
- //
- /////////////////////////////////////////////////////////////////////////////
- #include "stdafx.h"
- #include "ComboCompletion.h"
- #ifdef _DEBUG
- #define new DEBUG_NEW
- #undef THIS_FILE
- static char THIS_FILE[] = __FILE__;
- #endif
- /////////////////////////////////////////////////////////////////////////////
- // CComboCompletion
- CComboCompletion::CComboCompletion()
- {
- m_bAutoComplete = TRUE;
- }
- CComboCompletion::~CComboCompletion()
- {
- }
- BEGIN_MESSAGE_MAP(CComboCompletion, CComboBox)
- //{{AFX_MSG_MAP(CComboCompletion)
- ON_CONTROL_REFLECT(CBN_EDITUPDATE, OnEditUpdate)
- //}}AFX_MSG_MAP
- END_MESSAGE_MAP()
- /////////////////////////////////////////////////////////////////////////////
- // CComboCompletion message handlers
- BOOL CComboCompletion::PreTranslateMessage(MSG* pMsg)
- {
- // Need to check for backspace/delete. These will modify the text in
- // the edit box, causing the auto complete to just add back the text
- // the user has just tried to delete.
- if (pMsg->message == WM_KEYDOWN)
- {
- m_bAutoComplete = TRUE;
- int nVirtKey = (int) pMsg->wParam;
- if (nVirtKey == VK_DELETE || nVirtKey == VK_BACK)
- m_bAutoComplete = FALSE;
- }
- return CComboBox::PreTranslateMessage(pMsg);
- }
- void CComboCompletion::OnEditUpdate()
- {
- // if we are not to auto update the text, get outta here
- if (!m_bAutoComplete)
- return;
- // Get the text in the edit box
- CString str;
- GetWindowText(str);
- int nLength = str.GetLength();
- // Currently selected range
- DWORD dwCurSel = GetEditSel();
- WORD dStart = LOWORD(dwCurSel);
- WORD dEnd = HIWORD(dwCurSel);
- // Search for, and select in, and string in the combo box that is prefixed
- // by the text in the edit box
- if (SelectString(-1, str) == CB_ERR)
- {
- SetWindowText(str); // No text selected, so restore what was there before
- if (dwCurSel != CB_ERR)
- SetEditSel(dStart, dEnd); //restore cursor postion
- }
- // Set the text selection as the additional text that we have added
- if (dEnd < nLength && dwCurSel != CB_ERR)
- SetEditSel(dStart, dEnd);
- else
- SetEditSel(nLength, -1);
- }