StartMenu: add ARM64 support

Author: Mattiwatti

Src/StartMenu/StartMenu.cpp

@@ -296,8 +296,10 @@ bool WasOsUpgrade()
 // UAC dialog is shown to ensure it will run with administrator privileges
 void RunOsUpgradeTaskAsAdmin()
 {
-#ifdef _WIN64
+#if defined(_M_AMD64)
 	wchar_t path[_MAX_PATH] = L"%windir%\\System32\\StartMenuHelper64.dll";
+#elif defined(_M_ARM64)
+	wchar_t path[_MAX_PATH] = L"%windir%\\System32\\StartMenuHelperARM64.dll";
 #else
 	wchar_t path[_MAX_PATH] = L"%windir%\\System32\\StartMenuHelper32.dll";
 #endif
@@ -321,8 +323,10 @@ DWORD PerformOsUpgradeTask(bool silent)
 		regKey.SetDWORDValue(L"WinVersion", g_winVer);
 
 		// run regsvr32 StartMenuHelper
-#ifdef _WIN64
+#if defined(_M_AMD64)
 		wchar_t cmdLine[_MAX_PATH] = L"regsvr32 /s \"%windir%\\System32\\StartMenuHelper64.dll\"";
+#elif defined(_M_ARM64)
+		wchar_t cmdLine[_MAX_PATH] = L"regsvr32 /s \"%windir%\\System32\\StartMenuHelperARM64.dll\"";
 #else
 		wchar_t cmdLine[_MAX_PATH] = L"regsvr32 /s \"%windir%\\System32\\StartMenuHelper32.dll\"";
 #endif