gecko-dev/cmd/winfe/intelli.cpp

105 строки
2.5 KiB
C++

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