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Taskbar11: Fixed a bug that crashed explorer.exe when right clickin…
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…g the new taskbar on Windows 11 builds with "Never combine" on the new taskbar
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@Amrsatrio
Amrsatrio committed Sep 24, 2023
1 parent bc3bbc7 commit 6023718
Showing 1 changed file with 50 additions and 28 deletions.
78 changes: 50 additions & 28 deletions ExplorerPatcher/dllmain.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2411,6 +2411,8 @@ LRESULT CALLBACK Shell_TrayWndMouseProc(
return CallNextHookEx(Shell_TrayWndMouseHook, nCode, wParam, lParam);
}

PBYTE g_pTrayUIHost;

INT64 Shell_TrayWndSubclassProc(
_In_ HWND hWnd,
_In_ UINT uMsg,
Expand Down Expand Up @@ -2492,29 +2494,25 @@ INT64 Shell_TrayWndSubclassProc(
}
DeleteMenu(hSubMenu, 424, MF_BYCOMMAND); // Lock the taskbar
DeleteMenu(hSubMenu, 425, MF_BYCOMMAND); // Lock all taskbars
HWND hShellTray_Wnd = FindWindowExW(NULL, NULL, L"Shell_TrayWnd", NULL);
INT64* CTrayInstance = (BYTE*)(GetWindowLongPtrW(hShellTray_Wnd, 0)); // -> CTray
const unsigned int TRAYUI_OFFSET_IN_CTRAY = 110;
uintptr_t TrayUIInstance = *((INT64*)CTrayInstance + TRAYUI_OFFSET_IN_CTRAY) + 8;
if (TrayUIInstance)
if (g_pTrayUIHost)
{
int offset = 656;
if (IsWindows11Version22H2OrHigher()) offset = 640;
if (IsWindows11Version22H2Build2134OrHigher()) offset = 648;
if ((*(unsigned __int8(__fastcall**)(INT64))(**(INT64**)(TrayUIInstance + offset) + 104i64))(*(INT64*)(TrayUIInstance + offset)))
void** pTrayUIHostVtbl = *(void***)g_pTrayUIHost;
BOOL (*ShouldDeleteContextMenuUndo)(PBYTE) = pTrayUIHostVtbl[13];
UINT (*GetContextMenuUndoResourceId)(PBYTE) = pTrayUIHostVtbl[14];

if (ShouldDeleteContextMenuUndo(g_pTrayUIHost))
{
DeleteMenu(hSubMenu, 0x1A0u, 0);
DeleteMenu(hSubMenu, 416, MF_BYCOMMAND);
}
else
{
WCHAR Buffer[MAX_PATH];
WCHAR v40[MAX_PATH];
WCHAR NewItem[MAX_PATH];
LoadStringW(GetModuleHandleW(NULL), 0x216u, Buffer, 64);
UINT v22 = (*(__int64(__fastcall**)(INT64))(**(INT64**)(TrayUIInstance + offset) + 112i64))(*(INT64*)(TrayUIInstance + offset));
LoadStringW(GetModuleHandleW(NULL), v22, v40, 96);
swprintf_s(NewItem, 0xA0ui64, Buffer, v40);
ModifyMenuW(hSubMenu, 0x1A0u, 0, 0x1A0ui64, NewItem);
WCHAR wszTemplate[64];
WCHAR wszCommand[96];
WCHAR wszMenu[160];
LoadStringW(GetModuleHandleW(NULL), 534, wszTemplate, 64);
LoadStringW(GetModuleHandleW(NULL), GetContextMenuUndoResourceId(g_pTrayUIHost), wszCommand, 96);
swprintf_s(wszMenu, 160, wszTemplate, wszCommand);
ModifyMenuW(hSubMenu, 416, MF_BYCOMMAND, 416, wszMenu);
}
}
else
Expand Down Expand Up @@ -10715,6 +10713,8 @@ DWORD Inject(BOOL bIsExplorer)


HANDLE hExplorer = GetModuleHandleW(NULL);
MODULEINFO miExplorer;
GetModuleInformation(GetCurrentProcess(), hExplorer, &miExplorer, sizeof(MODULEINFO));
SetChildWindowNoActivateFunc = GetProcAddress(GetModuleHandleW(L"user32.dll"), (LPCSTR)2005);
if (bOldTaskbar)
{
Expand Down Expand Up @@ -10784,7 +10784,29 @@ DWORD Inject(BOOL bIsExplorer)
VnPatchIAT(hExplorer, "dwmapi.dll", "DwmUpdateThumbnailProperties", explorer_DwmUpdateThumbnailPropertiesHook);
PatchExplorer_UpdateWindowAccentProperties();
}

if (IsWindows11())
{
// Find a pointer to ITrayUIHost needed to have a working Windows 10 taskbar context menu on Windows 11 taskbar
// Ref: CTray::Init()
// 4C 8D 05 ? ? ? ? 48 8D 0D ? ? ? ? E8 ? ? ? ? 48 8B 8D
// ^^^^^^^
PBYTE match = FindPattern(
hExplorer,
miExplorer.SizeOfImage,
"\x4C\x8D\x05\x00\x00\x00\x00\x48\x8D\x0D\x00\x00\x00\x00\xE8\x00\x00\x00\x00\x48\x8B\x8D",
"xxx????xxx????x????xxx"
);
if (match)
{
match += 7;
g_pTrayUIHost = match + 7 + *(int*)(match + 3);
printf("ITrayUIHost = %llX\n", g_pTrayUIHost - (PBYTE)hExplorer);
}
else
{
printf("Failed to find ITrayUIHost, the custom Windows 11 taskbar context menu will not have the undo function\n");
}
}

HANDLE hShcore = LoadLibraryW(L"shcore.dll");
SHWindowsPolicy = GetProcAddress(hShcore, (LPCSTR)190);
Expand Down Expand Up @@ -10857,7 +10879,7 @@ DWORD Inject(BOOL bIsExplorer)
// ^^^^^^^
PBYTE match = FindPattern(
hTwinuiPcshell,
miTwinuiPcshell.lpBaseOfDll,
miTwinuiPcshell.SizeOfImage,
"\x4D\x8B\xCF\x4D\x8B\xC4\x8B\xD6\x48\x8B\x49\x08\xE8\x00\x00\x00\x00\xE9",
"xxxxxxxxxxxxx????x"
);
Expand All @@ -10873,7 +10895,7 @@ DWORD Inject(BOOL bIsExplorer)
// 48 89 5C 24 ? 48 89 74 24 ? 57 48 83 EC 30 49 8B D8 48 8B FA 48 8B F1 49 83 20 00 41 B0 03 B2 01
PBYTE match = FindPattern(
hTwinuiPcshell,
miTwinuiPcshell.lpBaseOfDll,
miTwinuiPcshell.SizeOfImage,
"\x48\x89\x5C\x24\x00\x48\x89\x74\x24\x00\x57\x48\x83\xEC\x30\x49\x8B\xD8\x48\x8B\xFA\x48\x8B\xF1\x49\x83\x20\x00\x41\xB0\x03\xB2\x01",
"xxxx?xxxx?xxxxxxxxxxxxxxxxxxxxxxx"
);
Expand All @@ -10890,7 +10912,7 @@ DWORD Inject(BOOL bIsExplorer)
// ^^^^^^^
PBYTE match = FindPattern(
hTwinuiPcshell,
miTwinuiPcshell.lpBaseOfDll,
miTwinuiPcshell.SizeOfImage,
"\xE8\x00\x00\x00\x00\xE8\x00\x00\x00\x00\x0F\xB7\xC8\xE8\x00\x00\x00\x00\xF7\xD8",
"x????x????xxxx????xx"
);
Expand All @@ -10907,7 +10929,7 @@ DWORD Inject(BOOL bIsExplorer)
// ^^^^^^^
PBYTE match = FindPattern(
hTwinuiPcshell,
miTwinuiPcshell.lpBaseOfDll,
miTwinuiPcshell.SizeOfImage,
"\xE8\x00\x00\x00\x00\x85\xDB\x74\x29",
"x????xxxx"
);
Expand All @@ -10923,7 +10945,7 @@ DWORD Inject(BOOL bIsExplorer)
// ^^^^^^^
PBYTE match = FindPattern(
hTwinuiPcshell,
miTwinuiPcshell.lpBaseOfDll,
miTwinuiPcshell.SizeOfImage,
"\xE8\x00\x00\x00\x00\x90\x49\x8D\x56\x38\x49\x8B\xCE",
"x????xxxxxxxx"
);
Expand All @@ -10939,7 +10961,7 @@ DWORD Inject(BOOL bIsExplorer)
// ^^^^^^^
PBYTE match = FindPattern(
hTwinuiPcshell,
miTwinuiPcshell.lpBaseOfDll,
miTwinuiPcshell.SizeOfImage,
"\xE8\x00\x00\x00\x00\x90\x48\x8D\x56\x38\x48\x8B\xCE",
"x????xxxxxxxx"
);
Expand All @@ -10954,7 +10976,7 @@ DWORD Inject(BOOL bIsExplorer)
// 48 83 EC 28 41 B0 03 B2 01
PBYTE match = FindPattern(
hTwinuiPcshell,
miTwinuiPcshell.lpBaseOfDll,
miTwinuiPcshell.SizeOfImage,
"\x48\x83\xEC\x28\x41\xB0\x03\xB2\x01",
"xxxxxxxxx"
);
Expand All @@ -10971,7 +10993,7 @@ DWORD Inject(BOOL bIsExplorer)
// ^^^^^^^
PBYTE match = FindPattern(
hTwinuiPcshell,
miTwinuiPcshell.lpBaseOfDll,
miTwinuiPcshell.SizeOfImage,
"\x4C\x89\x74\x24\x00\x00\x8B\x00\x00\x8B\x00\x8B\xD7\x48\x8B\xCE\xE8\x00\x00\x00\x00\x8B",
"xxxx??x??x?xxxxxx????x"
);
Expand All @@ -10989,7 +11011,7 @@ DWORD Inject(BOOL bIsExplorer)
// ^^^^^^^
PBYTE match = FindPattern(
hTwinuiPcshell,
miTwinuiPcshell.lpBaseOfDll,
miTwinuiPcshell.SizeOfImage,
"\x4C\x89\x74\x24\x00\x00\x8B\x00\x00\x8B\x00\x8B\xD7\x48\x8B\xCE\xE8\x00\x00\x00\x00\x90",
"xxxx??x??x?xxxxxx????x"
);
Expand Down

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