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105 lines
2.5 KiB
C++
105 lines
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#include "stdafx.h"
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#include "intelli.h"
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#include "slavewnd.h"
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// Be sure to handle WM_MOUSEWHEEL and this registered message
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// also.
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UINT msg_MouseWheel =
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#if _MSC_VER >= 1100
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RegisterWindowMessage(MSH_MOUSEWHEEL);
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#else
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(UINT)-1;
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#endif
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// Internal to this file.
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UINT msg_ScrollLines =
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#if _MSC_VER >= 1100
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RegisterWindowMessage(MSH_SCROLL_LINES);
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#else
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(UINT)-1;
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#endif
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CMouseWheel intelli;
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void UpdateMouseSettings(UINT uMsg, WPARAM wParam, LPARAM lParam)
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{
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// Make sure we want to take a look at this.
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if(uMsg == WM_SETTINGCHANGE) {
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// What happened?
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#if _MSC_VER >= 1100
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if(wParam == SPI_SETWHEELSCROLLLINES) {
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// Number of scroll lines changed.
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intelli.Update();
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}
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#endif
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}
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}
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CMouseWheel::CMouseWheel()
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{
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m_uScrollLines = 0;
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// Initialize mouse settings.
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Update();
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// Register to watch mouse settings.
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m_pWatcher = slavewnd.Register(WM_SETTINGCHANGE, UpdateMouseSettings);
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}
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CMouseWheel::~CMouseWheel()
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{
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if(m_pWatcher) {
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slavewnd.UnRegister(m_pWatcher);
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m_pWatcher = NULL;
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}
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}
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void CMouseWheel::Update()
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{
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HWND hWheel = GetWheelWnd();
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// Determine number of lines to scroll.
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m_uScrollLines = 3;
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if(sysInfo.m_bWinNT && sysInfo.m_dwMajor >= 4) {
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#if _MSC_VER >= 1100
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::SystemParametersInfo(SPI_GETWHEELSCROLLLINES, 0, &m_uScrollLines, 0);
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#endif
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}
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else if(hWheel) {
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m_uScrollLines = (UINT)::SendMessage(hWheel, msg_ScrollLines, 0, 0);
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}
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}
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HWND CMouseWheel::GetWheelWnd()
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{
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HWND hRetval = NULL;
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#if _MSC_VER >= 1100
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hRetval = ::FindWindow(MSH_WHEELMODULE_CLASS, MSH_WHEELMODULE_TITLE);
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#endif
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return(hRetval);
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}
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UINT CMouseWheel::ScrollLines()
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{
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return(m_uScrollLines);
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}
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