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authorDaniel Wilhelm <daniel@wili.li>2014-04-18 17:31:23 +0200
committerDaniel Wilhelm <daniel@wili.li>2014-04-18 17:31:23 +0200
commit851b6f99c1248c8ec8e33322a3179c1d82fdd515 (patch)
tree5b9abf4c4e648ea48ed4873e3c4bf1b225c64daf /zen/scroll_window_under_cursor.cpp
parent6.1 (diff)
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6.2
Diffstat (limited to 'zen/scroll_window_under_cursor.cpp')
-rw-r--r--zen/scroll_window_under_cursor.cpp72
1 files changed, 0 insertions, 72 deletions
diff --git a/zen/scroll_window_under_cursor.cpp b/zen/scroll_window_under_cursor.cpp
deleted file mode 100644
index 76a5ab4a..00000000
--- a/zen/scroll_window_under_cursor.cpp
+++ /dev/null
@@ -1,72 +0,0 @@
-// **************************************************************************
-// * This file is part of the FreeFileSync project. It is distributed under *
-// * GNU General Public License: http://www.gnu.org/licenses/gpl.html *
-// * Copyright (C) Zenju (zenju AT gmx DOT de) - All Rights Reserved *
-// **************************************************************************
-
-//redirect mouse wheel events directly to window under cursor rather than window having input focus
-//implementing new Windows Vista UI guidelines: http://msdn.microsoft.com/en-us/library/bb545459.aspx#wheel
-//this is confirmed to be required for at least Windows 2000 to Windows 8
-//on Ubuntu Linux, this is already the default behavior
-
-//Usage: just include this file into a Windows project
-
-#include <cassert>
-#include "win.h" //includes "windows.h"
-#include <Windowsx.h> //WM_MOUSEWHEEL
-
-
-namespace
-{
-LRESULT CALLBACK mouseInputHook(int nCode, WPARAM wParam, LPARAM lParam)
-{
- //"if nCode is less than zero, the hook procedure must pass the message to the CallNextHookEx function
- //without further processing and should return the value returned by CallNextHookEx"
- if (nCode == HC_ACTION) //the only valid value for this hook type
- {
- MSG& msgInfo = *reinterpret_cast<MSG*>(lParam);
-
- if (msgInfo.message == WM_MOUSEWHEEL ||
- msgInfo.message == WM_MOUSEHWHEEL)
- {
- POINT pt = {};
- pt.x = GET_X_LPARAM(msgInfo.lParam); //yes, there's also msgInfo.pt, but let's not take chances
- pt.y = GET_Y_LPARAM(msgInfo.lParam); //
-
- //visible child window directly under cursor; attention: not necessarily from our process!
- if (HWND hWin = ::WindowFromPoint(pt)) //http://blogs.msdn.com/b/oldnewthing/archive/2010/12/30/10110077.aspx
- if (msgInfo.hwnd != hWin && ::GetCapture() == nullptr)
- {
- DWORD winProcessId = 0;
- ::GetWindowThreadProcessId( //no-fail!
- hWin, //_In_ HWND hWnd,
- &winProcessId); //_Out_opt_ LPDWORD lpdwProcessId
- if (winProcessId == ::GetCurrentProcessId()) //no-fail!
- msgInfo.hwnd = hWin; //it would be a bug to set handle from another process here
- }
- }
- }
- return ::CallNextHookEx(nullptr, nCode, wParam, lParam);
-}
-
-struct InstallMouseHook
-{
- InstallMouseHook()
- {
- hHook = ::SetWindowsHookEx(WH_GETMESSAGE, //__in int idHook,
- mouseInputHook, //__in HOOKPROC lpfn,
- nullptr, //__in HINSTANCE hMod,
- ::GetCurrentThreadId()); //__in DWORD dwThreadId
- assert(hHook);
- }
-
- ~InstallMouseHook()
- {
- if (hHook)
- ::UnhookWindowsHookEx(hHook);
- }
-
-private:
- HHOOK hHook;
-} dummy;
-}
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