// Classic Shell (c) 2009-2010, Ivo Beltchev
// The sources for Classic Shell are distributed under the MIT open source license
#include "stdafx.h"
#include "ClassicStartMenuDLL.h"
#include "MenuContainer.h"
#include "IconManager.h"
#include "GlobalSettings.h"
#include "TranslationSettings.h"
#include "Settings.h"
#include <uxtheme.h>
#define HOOK_DROPTARGET // define this to replace the IDropTarget of the start button
#if defined(BUILD_SETUP) && !defined(HOOK_DROPTARGET)
#define HOOK_DROPTARGET // make sure it is defined in Setup
#endif
HWND g_StartButton;
HWND g_TaskBar;
HWND g_OwnerWindow;
static UINT g_StartMenuMsg;
static HWND g_Tooltip;
static TOOLINFO g_StarButtonTool;
static int g_HotkeyID;
static DWORD g_Hotkey;
static HHOOK g_ProgHook, g_StartHook;
///////////////////////////////////////////////////////////////////////////////
// COwnerWindow - a special window used as owner for some UI elements, like the ones created by IContextMenu::InvokeCommand.
// A menu window cannot be used because it may disappear immediately after InvokeCommand. Some UI elements, like the UAC-related
// stuff can be created long after InvokeCommand returns and the menu may be deleted by then.
class COwnerWindow: public CWindowImpl<COwnerWindow>
{
public:
DECLARE_WND_CLASS_EX(L"ClassicShell.CTempWindow",0,COLOR_MENU)
// message handlers
BEGIN_MSG_MAP( COwnerWindow )
MESSAGE_HANDLER( WM_ACTIVATE, OnActivate )
END_MSG_MAP()
protected:
LRESULT OnActivate( UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled )
{
if (LOWORD(wParam)!=WA_INACTIVE)
return 0;
if (CMenuContainer::s_pDragSource) return 0;
// check if another menu window is being activated
// if not, close all menus
for (std::vector<CMenuContainer*>::const_iterator it=CMenuContainer::s_Menus.begin();it!=CMenuContainer::s_Menus.end();++it)
if ((*it)->m_hWnd==(HWND)lParam)
return 0;
for (std::vector<CMenuContainer*>::reverse_iterator it=CMenuContainer::s_Menus.rbegin();it!=CMenuContainer::s_Menus.rend();++it)
if (!(*it)->m_bDestroyed)
(*it)->PostMessage(WM_CLOSE);
return 0;
}
};
static COwnerWindow g_Owner;
///////////////////////////////////////////////////////////////////////////////
STARTMENUAPI LRESULT CALLBACK HookProgMan( int code, WPARAM wParam, LPARAM lParam );
STARTMENUAPI LRESULT CALLBACK HookStartButton( int code, WPARAM wParam, LPARAM lParam );
static BOOL CALLBACK FindTooltipEnum( HWND hwnd, LPARAM lParam )
{
// look for tooltip control in the current thread that has a tool for g_TaskBar+g_StartButton
wchar_t name[256];
GetClassName(hwnd,name,_countof(name));
if (_wcsicmp(name,TOOLTIPS_CLASS)!=0) return TRUE;
TOOLINFO info={sizeof(info),0,g_TaskBar,(UINT_PTR)g_StartButton};
if (SendMessage(hwnd,TTM_GETTOOLINFO,0,(LPARAM)&info))
{
g_Tooltip=hwnd;
return FALSE;
}
return TRUE;
}
static BOOL CALLBACK FindStartButtonEnum( HWND hwnd, LPARAM lParam )
{
// look for top-level window in the current thread with class "button"
wchar_t name[256];
GetClassName(hwnd,name,_countof(name));
if (_wcsicmp(name,L"button")!=0) return TRUE;
g_StartButton=hwnd;
return FALSE;
}
static BOOL CALLBACK FindTaskBarEnum( HWND hwnd, LPARAM lParam )
{
// look for top-level window with class "Shell_TrayWnd" and process ID=lParam
DWORD process;
GetWindowThreadProcessId(hwnd,&process);
if (process!=lParam) return TRUE;
wchar_t name[256];
GetClassName(hwnd,name,_countof(name));
if (_wcsicmp(name,L"Shell_TrayWnd")!=0) return TRUE;
g_TaskBar=hwnd;
return FALSE;
}
// Find the start button window for the given process
STARTMENUAPI HWND FindStartButton( DWORD process )
{
g_StartButton=NULL;
g_TaskBar=NULL;
g_Tooltip=NULL;
// find the taskbar
EnumWindows(FindTaskBarEnum,process);
if (g_TaskBar)
{
// find start button
EnumThreadWindows(GetWindowThreadProcessId(g_TaskBar,NULL),FindStartButtonEnum,NULL);
if (GetWindowThreadProcessId(g_TaskBar,NULL)==GetCurrentThreadId())
{
// find tooltip
EnumThreadWindows(GetWindowThreadProcessId(g_TaskBar,NULL),FindTooltipEnum,NULL);
if (g_Tooltip)
{
g_StarButtonTool.cbSize=sizeof(g_StarButtonTool);
g_StarButtonTool.hwnd=g_TaskBar;
g_StarButtonTool.uId=(UINT_PTR)g_StartButton;
SendMessage(g_Tooltip,TTM_GETTOOLINFO,0,(LPARAM)&g_StarButtonTool);
}
g_OwnerWindow=g_Owner.Create(NULL,0,0,WS_POPUP,WS_EX_TOOLWINDOW|WS_EX_TOPMOST);
}
}
return g_StartButton;
}
#ifdef HOOK_DROPTARGET
class CStartMenuTarget: public IDropTarget
{
public:
CStartMenuTarget( void ) { m_RefCount=1; }
// IUnknown
virtual STDMETHODIMP QueryInterface( REFIID riid, void **ppvObject )
{
*ppvObject=NULL;
if (IID_IUnknown==riid || IID_IDropTarget==riid)
{
AddRef();
*ppvObject=(IDropTarget*)this;
return S_OK;
}
return E_NOINTERFACE;
}
virtual ULONG STDMETHODCALLTYPE AddRef( void )
{
return InterlockedIncrement(&m_RefCount);
}
virtual ULONG STDMETHODCALLTYPE Release( void )
{
long nTemp=InterlockedDecrement(&m_RefCount);
if (!nTemp) delete this;
return nTemp;
}
// IDropTarget
virtual HRESULT STDMETHODCALLTYPE DragEnter( IDataObject *pDataObj, DWORD grfKeyState, POINTL pt, DWORD *pdwEffect )
{
PostMessage(g_StartButton,g_StartMenuMsg,1,0);
*pdwEffect=DROPEFFECT_NONE;
return S_OK;
}
virtual HRESULT STDMETHODCALLTYPE DragOver( DWORD grfKeyState, POINTL pt, DWORD *pdwEffect ) { return *pdwEffect=DROPEFFECT_NONE; return S_OK; }
virtual HRESULT STDMETHODCALLTYPE DragLeave( void ) { return S_OK; }
virtual HRESULT STDMETHODCALLTYPE Drop( IDataObject *pDataObj, DWORD grfKeyState, POINTL pt, DWORD *pdwEffect ) { return *pdwEffect=DROPEFFECT_NONE; return S_OK; }
private:
LONG m_RefCount;
};
#endif
static CComPtr<IDropTarget> g_pOriginalTarget;
static void FindStartButton( void )
{
if (!g_StartButton)
{
g_StartMenuMsg=RegisterWindowMessage(L"ClassicStartMenu.StartMenuMsg");
g_StartButton=FindStartButton(GetCurrentProcessId());
if (g_StartButton)
{
#ifdef HOOK_DROPTARGET
g_pOriginalTarget=(IDropTarget*)GetProp(g_StartButton,L"OleDropTargetInterface");
if (g_pOriginalTarget)
RevokeDragDrop(g_StartButton);
CStartMenuTarget *pNewTarget=new CStartMenuTarget();
RegisterDragDrop(g_StartButton,pNewTarget);
pNewTarget->Release();
g_HotkeyID=GlobalAddAtom(L"ClassicStartMenu.Hotkey");
#endif
StartMenuSettings settings;
ReadSettings(settings);
SetHotkey(settings.Hotkey);
srand(GetTickCount());
}
if (!g_StartButton) g_StartButton=(HWND)1;
}
}
void EnableStartTooltip( bool bEnable )
{
if (g_Tooltip)
{
SendMessage(g_Tooltip,TTM_POP,0,0);
if (bEnable)
SendMessage(g_Tooltip,TTM_UPDATETIPTEXT,0,(LPARAM)&g_StarButtonTool);
else
{
TOOLINFO info=g_StarButtonTool;
info.lpszText=L"";
SendMessage(g_Tooltip,TTM_UPDATETIPTEXT,0,(LPARAM)&info);
}
}
}
// Restore the original drop target
void UnhookDropTarget( void )
{
#ifdef HOOK_DROPTARGET
if (g_pOriginalTarget)
{
RevokeDragDrop(g_StartButton);
RegisterDragDrop(g_StartButton,g_pOriginalTarget);
g_pOriginalTarget=NULL;
SetHotkey(0);
}
#endif
}
// Set the hotkey for the start menu (0 - Win key, 1 - no hotkey)
void SetHotkey( DWORD hotkey )
{
if (g_Hotkey>1)
UnregisterHotKey(g_StartButton,g_HotkeyID);
g_Hotkey=hotkey;
if (hotkey>1)
{
int mod=0;
if (hotkey&(HOTKEYF_SHIFT<<8)) mod|=MOD_SHIFT;
if (hotkey&(HOTKEYF_CONTROL<<8)) mod|=MOD_CONTROL;
if (hotkey&(HOTKEYF_ALT<<8)) mod|=MOD_ALT;
RegisterHotKey(g_StartButton,g_HotkeyID,mod,hotkey&255);
}
}
// Toggle the start menu. bKeyboard - set to true to show the keyboard cues
STARTMENUAPI HWND ToggleStartMenu( HWND startButton, bool bKeyboard )
{
return CMenuContainer::ToggleStartMenu(startButton,bKeyboard);
}
static void InitStartMenuDLL( void )
{
FindStartButton();
HWND progWin=FindWindowEx(NULL,NULL,L"Progman",NULL);
DWORD thread=GetWindowThreadProcessId(progWin,NULL);
g_ProgHook=SetWindowsHookEx(WH_GETMESSAGE,HookProgMan,NULL,thread);
g_StartHook=SetWindowsHookEx(WH_GETMESSAGE,HookStartButton,NULL,GetCurrentThreadId());
HWND hwnd=FindWindow(L"ClassicStartMenu.CStartHookWindow",L"StartHookWindow");
LoadLibrary(L"ClassicStartMenuDLL.dll"); // keep the DLL from unloading
if (hwnd) PostMessage(hwnd,WM_CLEAR,0,0); // tell the exe to unhook this hook
}
static DWORD WINAPI ExitThreadProc( void *param )
{
Sleep(1000); // wait a second! hopefully by then the hooks will be finished and no more of our code will be executing
FreeLibraryAndExitThread(g_Instance,0);
}
static void CleanStartMenuDLL( void )
{
// cleanup
if (g_Owner.m_hWnd) g_Owner.DestroyWindow();
CloseSettings();
CMenuContainer::CloseStartMenu();
CMenuFader::ClearAll();
g_IconManager.StopPreloading(true);
UnhookDropTarget();
// send WM_CLOSE to the window in ClassicStartMenu.exe to close that process
HWND hwnd=FindWindow(L"ClassicStartMenu.CStartHookWindow",L"StartHookWindow");
if (hwnd) PostMessage(hwnd,WM_CLOSE,0,0);
UnhookWindowsHookEx(g_ProgHook);
UnhookWindowsHookEx(g_StartHook);
// we need to unload the DLL here. but we can't just call FreeLibrary because it will unload the code
// while it is still executing. So we create a separate thread and use FreeLibraryAndExitThread
CreateThread(NULL,0,ExitThreadProc,NULL,0,NULL);
}
///////////////////////////////////////////////////////////////////////////////
// WH_GETMESSAGE hook for the Progman window
STARTMENUAPI LRESULT CALLBACK HookProgMan( int code, WPARAM wParam, LPARAM lParam )
{
if (code==HC_ACTION)
{
MSG *msg=(MSG*)lParam;
if (msg->message==WM_SYSCOMMAND && (msg->wParam&0xFFF0)==SC_TASKLIST && msg->lParam!='CLSM')
{
FindStartButton();
if (g_Hotkey==0)
{
if (g_StartButton)
{
PostMessage(g_StartButton,g_StartMenuMsg,0,0);
}
msg->message=WM_NULL;
}
}
}
return CallNextHookEx(NULL,code,wParam,lParam);
}
static bool g_bInMenu=false;
static DWORD g_LastClickTime=0;
// WH_GETMESSAGE hook for the start button window
STARTMENUAPI LRESULT CALLBACK HookStartButton( int code, WPARAM wParam, LPARAM lParam )
{
if (code==HC_ACTION && !g_bInMenu)
{
MSG *msg=(MSG*)lParam;
FindStartButton();
if (IsSettingsMessage(msg))
{
msg->message=WM_NULL;
return 0;
}
if (msg->message==g_StartMenuMsg && msg->hwnd==g_StartButton)
{
// wParam=0 - toggle
// wParam=1 - open
msg->message=WM_NULL;
if (msg->wParam==0 || !CMenuContainer::IsMenuOpened())
ToggleStartMenu(g_StartButton,true);
}
if (msg->message==WM_HOTKEY && msg->hwnd==g_StartButton && msg->wParam==g_HotkeyID)
{
msg->message=WM_NULL;
SetForegroundWindow(g_StartButton);
ToggleStartMenu(g_StartButton,true);
}
if (msg->message==WM_KEYDOWN && msg->hwnd==g_StartButton && (msg->wParam==VK_SPACE || msg->wParam==VK_RETURN))
{
msg->message=WM_NULL;
SetForegroundWindow(g_StartButton);
ToggleStartMenu(g_StartButton,true);
}
if ((msg->message==WM_LBUTTONDOWN || msg->message==WM_LBUTTONDBLCLK) && msg->hwnd==g_StartButton)
{
const wchar_t *str=FindSetting("EnableShiftClick");
int shiftClick=str?_wtol(str):1;
if (shiftClick<1 || shiftClick>2 || (shiftClick==2 && (msg->wParam&MK_SHIFT)) || (shiftClick==1 && !(msg->wParam&MK_SHIFT)))
{
DWORD pos=GetMessagePos();
POINT pt={(short)LOWORD(pos),(short)HIWORD(pos)};
if (msg->time==g_LastClickTime || WindowFromPoint(pt)!=g_StartButton)
{
// ignore the click if it matches the last click's timestamp (sometimes the same message comes twice)
// or when the mouse is not over the start button (sometimes clicks on a context menu are sent to the start button)
return CallNextHookEx(NULL,code,wParam,lParam);
}
g_LastClickTime=msg->time;
// click on the start button - toggle the menu
DWORD keyboard;
SystemParametersInfo(SPI_GETKEYBOARDCUES,NULL,&keyboard,0);
ToggleStartMenu(g_StartButton,keyboard!=0);
msg->message=WM_NULL;
}
}
if ((msg->message==WM_NCLBUTTONDOWN || msg->message==WM_NCLBUTTONDBLCLK) && msg->hwnd==g_TaskBar
&& (msg->wParam==HTCAPTION || !IsAppThemed())) // HACK: in Classic mode the start menu can show up even if wParam is not HTCAPTION (most likely a bug in Windows)
{
const wchar_t *str=FindSetting("EnableShiftClick");
int shiftClick=str?_wtol(str):1;
if (shiftClick<1 || shiftClick>2 || (shiftClick==2 && GetKeyState(VK_SHIFT)<0) || (shiftClick==1 && GetKeyState(VK_SHIFT)>=0))
{
DWORD pos=GetMessagePos();
POINT pt={(short)LOWORD(pos),(short)HIWORD(pos)};
RECT rc;
GetWindowRect(g_TaskBar,&rc);
if (PtInRect(&rc,pt))
{
// in Classic mode there are few pixels at the edge of the taskbar that are not covered by a child window
// we nudge the point to be in the middle of the taskbar to avoid those pixels
// also ignore clicks on the half of the taskbar that doesn't contain the start button
APPBARDATA appbar={sizeof(appbar),g_TaskBar};
SHAppBarMessage(ABM_GETTASKBARPOS,&appbar);
if (appbar.uEdge==ABE_LEFT || appbar.uEdge==ABE_RIGHT)
{
pt.x=(rc.left+rc.right)/2; // vertical taskbar, set X
if (pt.y>(rc.top+rc.bottom)/2)
return CallNextHookEx(NULL,code,wParam,lParam);
}
else
{
pt.y=(rc.top+rc.bottom)/2; // vertical taskbar, set Y
if (pt.x>(rc.left+rc.right)/2)
{
if (!IsLanguageRTL())
return CallNextHookEx(NULL,code,wParam,lParam);
}
else
{
if (IsLanguageRTL())
return CallNextHookEx(NULL,code,wParam,lParam);
}
}
}
ScreenToClient(g_TaskBar,&pt);
HWND child=ChildWindowFromPoint(g_TaskBar,pt);
if (child!=NULL && child!=g_TaskBar)
{
// ignore the click if it is on a child window (like the rebar or the tray area)
return CallNextHookEx(NULL,code,wParam,lParam);
}
// click on the taskbar around the start menu - toggle the menu
DWORD keyboard;
SystemParametersInfo(SPI_GETKEYBOARDCUES,NULL,&keyboard,0);
ToggleStartMenu(g_StartButton,keyboard!=0);
msg->message=WM_NULL;
}
}
if (msg->message==WM_TIMER && msg->hwnd==g_TaskBar && CMenuContainer::IgnoreTaskbarTimers())
{
// stop the taskbar timer messages. prevents the auto-hide taskbar from closing
msg->message=WM_NULL;
}
if (msg->message==WM_RBUTTONUP && msg->hwnd==g_StartButton)
{
const wchar_t *str=FindSetting("EnableShiftClick");
int shiftClick=str?_wtol(str):1;
if (shiftClick<1 || shiftClick>2 || (shiftClick==2 && (msg->wParam&MK_SHIFT)) || (shiftClick==1 && !(msg->wParam&MK_SHIFT)))
{
// additional commands for the context menu
enum
{
CMD_SETTINGS=1,
CMD_HELP,
CMD_EXIT,
CMD_OPEN,
CMD_OPEN_ALL,
};
// right-click on the start button - open the context menu (Settings, Help, Exit)
msg->message=WM_NULL;
POINT p={(short)LOWORD(msg->lParam),(short)HIWORD(msg->lParam)};
ClientToScreen(msg->hwnd,&p);
HMENU menu=CreatePopupMenu();
AppendMenu(menu,MF_STRING,0,L"== Classic Start Menu ==");
EnableMenuItem(menu,0,MF_BYPOSITION|MF_DISABLED);
SetMenuDefaultItem(menu,0,TRUE);
AppendMenu(menu,MF_SEPARATOR,0,0);
AppendMenu(menu,MF_STRING,CMD_OPEN,FindTranslation("Menu.Open",L"&Open"));
AppendMenu(menu,MF_STRING,CMD_OPEN_ALL,FindTranslation("Menu.OpenAll",L"O&pen All Users"));
AppendMenu(menu,MF_SEPARATOR,0,0);
if (FindSettingBool("EnableSettings",true))
AppendMenu(menu,MF_STRING,CMD_SETTINGS,FindTranslation("Menu.MenuSettings",L"Settings"));
AppendMenu(menu,MF_STRING,CMD_HELP,FindTranslation("Menu.MenuHelp",L"Help"));
if (FindSettingBool("EnableExit",true))
AppendMenu(menu,MF_STRING,CMD_EXIT,FindTranslation("Menu.MenuExit",L"Exit"));
MENUITEMINFO mii={sizeof(mii)};
mii.fMask=MIIM_BITMAP;
mii.hbmpItem=HBMMENU_POPUP_CLOSE;
SetMenuItemInfo(menu,3,FALSE,&mii);
g_bInMenu=true;
int res=TrackPopupMenu(menu,TPM_LEFTBUTTON|TPM_RETURNCMD|(IsLanguageRTL()?TPM_LAYOUTRTL:0),p.x,p.y,0,msg->hwnd,NULL);
DestroyMenu(menu);
g_bInMenu=false;
if (res==CMD_SETTINGS)
{
EditSettings(false);
}
if (res==CMD_HELP)
{
wchar_t path[_MAX_PATH];
GetModuleFileName(g_Instance,path,_countof(path));
*PathFindFileName(path)=0;
wcscat_s(path,DOC_PATH L"ClassicStartMenu.html");
ShellExecute(NULL,NULL,path,NULL,NULL,SW_SHOWNORMAL);
}
if (res==CMD_EXIT)
{
LRESULT res=CallNextHookEx(NULL,code,wParam,lParam);
CleanStartMenuDLL();
return res; // we should exit as quickly as possible now. the DLL is about to be unloaded
}
if (res==CMD_OPEN || res==CMD_OPEN_ALL)
{
wchar_t *path;
if (SUCCEEDED(SHGetKnownFolderPath((res==CMD_OPEN)?FOLDERID_StartMenu:FOLDERID_CommonStartMenu,0,NULL,&path)))
{
ShellExecute(NULL,L"open",path,NULL,NULL,SW_SHOWNORMAL);
CoTaskMemFree(path);
}
}
}
}
}
return CallNextHookEx(NULL,code,wParam,lParam);
}
// WH_GETMESSAGE hook for the explorer's GUI thread. The start menu exe uses this hook to inject code into the explorer process
STARTMENUAPI LRESULT CALLBACK HookInject( int code, WPARAM wParam, LPARAM lParam )
{
if (code==HC_ACTION && !g_StartButton)
{
MSG *msg=(MSG*)lParam;
InitStartMenuDLL();
}
return CallNextHookEx(NULL,code,wParam,lParam);
}
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