Alt-Tab: Enable Windows 10 style in OS builds 22621+

ExplorerPatcher/dllmain.c

@@ -9658,10 +9658,20 @@ INT64 twinui_pcshell_IsUndockedAssetAvailableHook(INT a1, INT64 a2, INT64 a3, co
     // else, show Windows 11 style basically
     else
     {
+        if (twinui_pcshell_IsUndockedAssetAvailableFunc)
             return twinui_pcshell_IsUndockedAssetAvailableFunc(a1, a2, a3, a4);
+        return 1;
     }
 }
 
+INT64(*twinui_pcshell_CMultitaskingViewManager__CreateDCompMTVHostFunc)(INT64 a1, unsigned int a2, INT64 a3, INT64 a4, INT64* a5);
+INT64(*twinui_pcshell_CMultitaskingViewManager__CreateXamlMTVHostFunc)(INT64 a1, unsigned int a2, INT64 a3, INT64 a4, INT64* a5);
+INT64 twinui_pcshell_CMultitaskingViewManager__CreateXamlMTVHostHook(INT64 a1, unsigned int a2, INT64 a3, INT64 a4, INT64* a5)
+{
+    if (!twinui_pcshell_IsUndockedAssetAvailableHook(a2, 0, 0, 0, NULL)) return twinui_pcshell_CMultitaskingViewManager__CreateDCompMTVHostFunc(a1, a2, a3, a4, a5);
+    return twinui_pcshell_CMultitaskingViewManager__CreateXamlMTVHostFunc(a1, a2, a3, a4, a5);
+}
+
 BOOL IsDebuggerPresentHook()
 {
     return FALSE;
@@ -10179,6 +10189,25 @@ DWORD Inject(BOOL bIsExplorer)
     }
 
     if (symbols_PTRS.twinui_pcshell_PTRS[7] && symbols_PTRS.twinui_pcshell_PTRS[7] != 0xFFFFFFFF)
+    {
+        if (IsWindows11Version22H2OrHigher())
+        {
+            twinui_pcshell_CMultitaskingViewManager__CreateDCompMTVHostFunc = (INT64(*)(void*, POINT*))
+                ((uintptr_t)hTwinuiPcshell + symbols_PTRS.twinui_pcshell_PTRS[TWINUI_PCSHELL_SB_CNT - 1]);
+            twinui_pcshell_CMultitaskingViewManager__CreateXamlMTVHostFunc = (INT64(*)(void*, POINT*))
+                ((uintptr_t)hTwinuiPcshell + symbols_PTRS.twinui_pcshell_PTRS[7]);
+            rv = funchook_prepare(
+                funchook,
+                (void**)&twinui_pcshell_CMultitaskingViewManager__CreateXamlMTVHostFunc,
+                twinui_pcshell_CMultitaskingViewManager__CreateXamlMTVHostHook
+            );
+            if (rv != 0)
+            {
+                FreeLibraryAndExitThread(hModule, rv);
+                return rv;
+            }
+        }
+        else
         {
             twinui_pcshell_IsUndockedAssetAvailableFunc = (INT64(*)(void*, POINT*))
                 ((uintptr_t)hTwinuiPcshell + symbols_PTRS.twinui_pcshell_PTRS[7]);
@@ -10193,6 +10222,7 @@ DWORD Inject(BOOL bIsExplorer)
                 return rv;
             }
         }
+    }
 
     /*if (symbols_PTRS.twinui_pcshell_PTRS[TWINUI_PCSHELL_SB_CNT - 1] && symbols_PTRS.twinui_pcshell_PTRS[TWINUI_PCSHELL_SB_CNT - 1] != 0xFFFFFFFF)
     {

ExplorerPatcher/symbols.c

@@ -246,6 +246,16 @@ DWORD DownloadSymbols(DownloadSymbolsParams* params)
             VirtualProtect(twinui_pcshell_SN, sizeof(twinui_pcshell_SN), flOldProtect, &flOldProtect);
         }
     }
+    if (IsWindows11Version22H2OrHigher())
+    {
+        DWORD flOldProtect = 0;
+        if (VirtualProtect(twinui_pcshell_SN, sizeof(twinui_pcshell_SN), PAGE_EXECUTE_READWRITE, &flOldProtect))
+        {
+            twinui_pcshell_SN[7] = "CMultitaskingViewManager::_CreateXamlMTVHost";
+            twinui_pcshell_SN[TWINUI_PCSHELL_SB_CNT - 1] = "CMultitaskingViewManager::_CreateDCompMTVHost";
+            VirtualProtect(twinui_pcshell_SN, sizeof(twinui_pcshell_SN), flOldProtect, &flOldProtect);
+        }
+    }
     if (VnGetSymbols(
         szSettingsPath,
         symbols_PTRS.twinui_pcshell_PTRS,
@@ -1124,6 +1134,17 @@ BOOL LoadSymbols(symbols_addr* symbols_PTRS, HMODULE hModule)
             &(symbols_PTRS->twinui_pcshell_PTRS[7]),
             &dwSize
         );
+        if (IsWindows11Version22H2OrHigher())
+        {
+            RegQueryValueExW(
+                hKey,
+                TEXT(TWINUI_PCSHELL_SB_LAST),
+                0,
+                NULL,
+                &(symbols_PTRS->twinui_pcshell_PTRS[TWINUI_PCSHELL_SB_CNT - 1]),
+                &dwSize
+            );
+        }
         RegCloseKey(hKey);
 
         if (IsWindows11())

ExplorerPatcher/symbols.h

@@ -19,6 +19,7 @@
 #define TWINUI_PCSHELL_SB_6 "CLauncherTipContextMenu::ShowLauncherTipContextMenu"
 #define TWINUI_PCSHELL_SB_7 "IsUndockedAssetAvailable"
 #define TWINUI_PCSHELL_SB_8 "winrt::Windows::Internal::Shell::implementation::MeetAndChatManager::OnMessage" // should be always last
+#define TWINUI_PCSHELL_SB_LAST TWINUI_PCSHELL_SB_8
 #define TWINUI_PCSHELL_SB_CNT 9
 #define STARTDOCKED_SB_NAME "StartDocked"
 #define STARTDOCKED_SB_0 "StartDocked::LauncherFrame::ShowAllApps" // UNUSED