Taskbar10: Add support for loading ep_taskbar on Windows 10 1904x

ExplorerPatcher/dllmain.c

@@ -9944,10 +9944,6 @@ BOOL CheckExplorerSymbols(symbols_addr* symbols_PTRS)
 
 const WCHAR* GetTaskbarDllChecked(symbols_addr* symbols_PTRS)
 {
-    if (!IsWindows11Version22H2OrHigher())
-    {
-        return NULL;
-    }
     const WCHAR* pszTaskbarDll = PickTaskbarDll();
     if (!pszTaskbarDll)
     {
@@ -10001,7 +9997,25 @@ HMODULE PrepareAlternateTaskbarImplementation(symbols_addr* symbols_PTRS, const
         return NULL;
     }
 
-    explorer_TrayUI_CreateInstanceFunc = GetProcAddress(hMyTaskbar, "EP_TrayUI_CreateInstance");
+    TrayUI_CreateInstance_t pfnMyTrayUICreateInstance = (TrayUI_CreateInstance_t)GetProcAddress(hMyTaskbar, "EP_TrayUI_CreateInstance");
+    if (IsWindows11())
+    {
+        explorer_TrayUI_CreateInstanceFunc = pfnMyTrayUICreateInstance;
+    }
+    else if (explorer_TrayUI_CreateInstanceFunc)
+    {
+        funchook_prepare(
+            funchook,
+            (void**)&explorer_TrayUI_CreateInstanceFunc,
+            pfnMyTrayUICreateInstance
+        );
+    }
+    else
+    {
+        printf("[TB] Failed to hook TrayUI_CreateInstance()\n");
+        FreeLibrary(hMyTaskbar);
+        return NULL;
+    }
 
     typedef void (*CopyExplorerSymbols_t)(symbols_addr* symbols);
     CopyExplorerSymbols_t CopyExplorerSymbols = (CopyExplorerSymbols_t)GetProcAddress(hMyTaskbar, "CopyExplorerSymbols");
@@ -10603,8 +10617,8 @@ DWORD Inject(BOOL bIsExplorer)
     {
         // Find pointers to various stuff needed to have a working Windows 10 taskbar and Windows 10 taskbar context menu on Windows 11 taskbar
 #if defined(_M_X64)
-        // 4C 8D 05 ? ? ? ? 48 8D 0D ? ? ? ? E8 ? ? ? ? 48 8B
+        // 4C 8D 05 ?? ?? ?? ?? 48 8D 0D ?? ?? ?? ?? E8 ?? ?? ?? ?? 48 8B
-        //                           ^^^^^^^    ^^^^^^^
+        //                               ^^^^^^^^^^^    ^^^^^^^^^^^
         // Ref: CTray::Init()
         PBYTE match = FindPattern(
             hExplorer,
@@ -10615,30 +10629,43 @@ DWORD Inject(BOOL bIsExplorer)
         if (match)
         {
             match += 7; // Point to 48
-            g_pTrayUIHost = match + 7 + *(int*)(match + 3);
+            g_pTrayUIHost = (ITrayUIHost*)(match + 7 + *(int*)(match + 3));
             match += 7; // Point to E8
-            explorer_TrayUI_CreateInstanceFunc = match + 5 + *(int*)(match + 1);
+            explorer_TrayUI_CreateInstanceFunc = (TrayUI_CreateInstance_t)(match + 5 + *(int*)(match + 1));
         }
 #elif defined(_M_ARM64)
         // TODO Add support for ARM64
 #endif
+    }
+    else
+    {
+#if defined(_M_X64)
+        // 4C 8D 05 ?? ?? ?? ?? 48 8D 0D ?? ?? ?? ?? E8 ?? ?? ?? ?? 85 C0
+        //                               ^^^^^^^^^^^    ^^^^^^^^^^^
+        // Ref: CTray::Init()
+        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\x85\xC0",
+            "xxx????xxx????x????xx"
+        );
+        if (match)
+        {
+            match += 7; // Point to 48
+            g_pTrayUIHost = (ITrayUIHost*)(match + 7 + *(int*)(match + 3));
+            match += 7; // Point to E8
+            explorer_TrayUI_CreateInstanceFunc = (TrayUI_CreateInstance_t)(match + 5 + *(int*)(match + 1));
+        }
+#endif
+    }
     if (g_pTrayUIHost)
     {
         printf("ITrayUIHost = %llX\n", (PBYTE)g_pTrayUIHost - (PBYTE)hExplorer);
     }
-        else
+    if (explorer_TrayUI_CreateInstanceFunc)
-        {
-            printf("Failed to find ITrayUIHost\n");
-        }
-        if (explorer_TrayUI_CreateInstanceFunc) // TODO This does not exist anymore in 26244+
     {
         printf("explorer.exe!TrayUI_CreateInstance() = %llX\n", (PBYTE)explorer_TrayUI_CreateInstanceFunc - (PBYTE)hExplorer);
     }
-        else
-        {
-            printf("Failed to find explorer.exe!TrayUI_CreateInstance()\n");
-        }
-    }
 
     // Enable Windows 10 taskbar search box on 22621+
     if (IsWindows11Version22H2OrHigher())

ExplorerPatcher/utility.c

@@ -13,6 +13,7 @@ void printf_guid(GUID guid)
         guid.Data4[4], guid.Data4[5], guid.Data4[6], guid.Data4[7]);
 }
 
+#ifdef _DEBUG
 LRESULT CALLBACK BalloonWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) 
 {
     if (msg == WM_CREATE)
@@ -82,7 +83,6 @@ __declspec(dllexport) int CALLBACK ZZTestBalloon(HWND hWnd, HINSTANCE hInstance,
     return 0;
 }
 
-#ifdef _DEBUG
 const wchar_t TestToastXML[] =
 L"<toast scenario=\"reminder\" "
 L"activationType=\"protocol\" launch=\"https://github.com/valinet/ExplorerPatcher\" duration=\"%s\">\r\n"
@@ -138,7 +138,7 @@ __declspec(dllexport) int CALLBACK ZZTestToast(HWND hWnd, HINSTANCE hInstance, L
 }
 #endif
 
-__declspec(dllexport) int CALLBACK ZZLaunchExplorer(HWND hWnd, HINSTANCE hInstance, LPSTR lpszCmdLine, int nCmdShow)
+/*__declspec(dllexport)*/ int CALLBACK ZZLaunchExplorer(HWND hWnd, HINSTANCE hInstance, LPSTR lpszCmdLine, int nCmdShow)
 {
     Sleep(100);
     TCHAR wszExplorerPath[MAX_PATH + 1];
@@ -170,14 +170,14 @@ __declspec(dllexport) int CALLBACK ZZLaunchExplorer(HWND hWnd, HINSTANCE hInstan
     return 0;
 }
 
-__declspec(dllexport) int CALLBACK ZZLaunchExplorerDelayed(HWND hWnd, HINSTANCE hInstance, LPSTR lpszCmdLine, int nCmdShow)
+/*__declspec(dllexport)*/ int CALLBACK ZZLaunchExplorerDelayed(HWND hWnd, HINSTANCE hInstance, LPSTR lpszCmdLine, int nCmdShow)
 {
     Sleep(2000);
     ZZLaunchExplorer(hWnd, hInstance, lpszCmdLine, nCmdShow);
     return 0;
 }
 
-__declspec(dllexport) int CALLBACK ZZRestartExplorer(HWND hWnd, HINSTANCE hInstance, LPSTR lpszCmdLine, int nCmdShow)
+/*__declspec(dllexport)*/ int CALLBACK ZZRestartExplorer(HWND hWnd, HINSTANCE hInstance, LPSTR lpszCmdLine, int nCmdShow)
 {
     BeginExplorerRestart(NULL);
     FinishExplorerRestart();

ExplorerPatcher/utility.h

@@ -104,7 +104,8 @@ DEFINE_GUID(IID_ITrayUIComponent,
     0x64, 0xb4, 0xc0, 0x9b, 0x21, 0x1b
 );
 
-EP_INLINE HRESULT(*explorer_TrayUI_CreateInstanceFunc)(ITrayUIHost* host, REFIID riid, void** ppv);
+typedef HRESULT(*TrayUI_CreateInstance_t)(ITrayUIHost* host, REFIID riid, void** ppv);
+EP_INLINE TrayUI_CreateInstance_t explorer_TrayUI_CreateInstanceFunc;
 #pragma endregion
 
 inline int FileExistsW(wchar_t* file)
@@ -122,19 +123,19 @@ inline int FileExistsW(wchar_t* file)
 // https://stackoverflow.com/questions/1672677/print-a-guid-variable
 void printf_guid(GUID guid);
 
+#ifdef _DEBUG
 LRESULT CALLBACK BalloonWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
 
 __declspec(dllexport) int CALLBACK ZZTestBalloon(HWND hWnd, HINSTANCE hInstance, LPSTR lpszCmdLine, int nCmdShow);
 
-#ifdef _DEBUG
 __declspec(dllexport) int CALLBACK ZZTestToast(HWND hWnd, HINSTANCE hInstance, LPSTR lpszCmdLine, int nCmdShow);
 #endif
 
-__declspec(dllexport) int CALLBACK ZZLaunchExplorer(HWND hWnd, HINSTANCE hInstance, LPSTR lpszCmdLine, int nCmdShow);
+/*__declspec(dllexport)*/ int CALLBACK ZZLaunchExplorer(HWND hWnd, HINSTANCE hInstance, LPSTR lpszCmdLine, int nCmdShow);
 
-__declspec(dllexport) int CALLBACK ZZLaunchExplorerDelayed(HWND hWnd, HINSTANCE hInstance, LPSTR lpszCmdLine, int nCmdShow);
+/*__declspec(dllexport)*/ int CALLBACK ZZLaunchExplorerDelayed(HWND hWnd, HINSTANCE hInstance, LPSTR lpszCmdLine, int nCmdShow);
 
-__declspec(dllexport) int CALLBACK ZZRestartExplorer(HWND hWnd, HINSTANCE hInstance, LPSTR lpszCmdLine, int nCmdShow);
+/*__declspec(dllexport)*/ int CALLBACK ZZRestartExplorer(HWND hWnd, HINSTANCE hInstance, LPSTR lpszCmdLine, int nCmdShow);
 
 #define MIN(X, Y) (((X) < (Y)) ? (X) : (Y))
 #define MAX(X, Y) (((X) > (Y)) ? (X) : (Y))
@@ -941,6 +942,16 @@ inline const WCHAR* PickTaskbarDll()
 {
     DWORD b = global_rovi.dwBuildNumber;
 
+    if (b >= 19041 && b <= 19045) // Windows 10 20H2, 21H2, 22H2
+    {
+        return L"ep_taskbar.0.dll";
+    }
+
+    if (b >= 21343 && b <= 22000) // Windows 11 21H2
+    {
+        return L"ep_taskbar.1.dll";
+    }
+
     if ((b >= 22621 && b <= 22635)  // 22H2-23H2 Release, Release Preview, and Beta channels
      || (b >= 23403 && b <= 25197)) // Early pre-reboot Dev channel until post-reboot Dev channel
     {

ep_setup/ep_setup.c

@@ -825,6 +825,7 @@ BOOL DownloadResource(BOOL bInstall, LPCWSTR pwszURL, DWORD dwSize, LPCSTR chash
 void ProcessTaskbarDlls(BOOL* bInOutOk, BOOL bInstall, BOOL bExtractMode, HINSTANCE hInstance, unzFile zipFile, WCHAR wszPath[260])
 {
     LPCWSTR pwszTaskbarDllName = bExtractMode ? NULL : PickTaskbarDll();
+    if (*bInOutOk) *bInOutOk = InstallResource(bInstall && (bExtractMode || pwszTaskbarDllName && !wcscmp(pwszTaskbarDllName, L"ep_taskbar.0.dll")), hInstance, zipFile, "ep_taskbar.0.dll", wszPath, L"ep_taskbar.0.dll");
     if (*bInOutOk) *bInOutOk = InstallResource(bInstall && (bExtractMode || pwszTaskbarDllName && !wcscmp(pwszTaskbarDllName, L"ep_taskbar.2.dll")), hInstance, zipFile, "ep_taskbar.2.dll", wszPath, L"ep_taskbar.2.dll");
     if (*bInOutOk) *bInOutOk = InstallResource(bInstall && (bExtractMode || pwszTaskbarDllName && !wcscmp(pwszTaskbarDllName, L"ep_taskbar.3.dll")), hInstance, zipFile, "ep_taskbar.3.dll", wszPath, L"ep_taskbar.3.dll");
     if (*bInOutOk) *bInOutOk = InstallResource(bInstall && (bExtractMode || pwszTaskbarDllName && !wcscmp(pwszTaskbarDllName, L"ep_taskbar.4.dll")), hInstance, zipFile, "ep_taskbar.4.dll", wszPath, L"ep_taskbar.4.dll");