From 8bd4911054184fee798c9134c2925c74a4cb6292 Mon Sep 17 00:00:00 2001
From: Timo Kreuzer <timo.kreuzer@reactos.org>
Date: Tue, 19 May 2026 13:41:36 +0300
Subject: [PATCH] [SHLWAPI] Update WhichPlatform from Wine-10.0

---
 dll/win32/shlwapi/ordinal.c | 41 +++++++++++++++----------------------
 1 file changed, 17 insertions(+), 24 deletions(-)

diff --git a/dll/win32/shlwapi/ordinal.c b/dll/win32/shlwapi/ordinal.c
index f76eb4e79e4..bc4bb44995a 100644
--- a/dll/win32/shlwapi/ordinal.c
+++ b/dll/win32/shlwapi/ordinal.c
@@ -2936,56 +2936,49 @@ BOOL WINAPI GUIDFromStringW(LPCWSTR idstr, CLSID *id)
  *  either set to TRUE, or removed depending on whether the browser is deemed
  *  to be integrated.
  */
-#ifdef __REACTOS__
 UINT WINAPI WhichPlatform(void)
-#else
-DWORD WINAPI WhichPlatform(void)
-#endif
 {
     static const char szIntegratedBrowser[] = "IntegratedBrowser";
-    static DWORD dwState = 0;
-    HKEY hKey;
-    DWORD dwRet, dwData, dwSize;
+    static DWORD state = PLATFORM_UNKNOWN;
+    DWORD ret, data, size;
     HMODULE hshell32;
+    HKEY hKey;
 
-    if (dwState)
-        return dwState;
+    if (state)
+        return state;
 
     /* If shell32 exports DllGetVersion(), the browser is integrated */
-    dwState = 1;
+    state = PLATFORM_BROWSERONLY;
     hshell32 = LoadLibraryA("shell32.dll");
     if (hshell32)
     {
         FARPROC pDllGetVersion;
         pDllGetVersion = GetProcAddress(hshell32, "DllGetVersion");
-        dwState = pDllGetVersion ? 2 : 1;
+        state = pDllGetVersion ? PLATFORM_INTEGRATED : PLATFORM_BROWSERONLY;
         FreeLibrary(hshell32);
     }
 
     /* Set or delete the key accordingly */
-    dwRet = RegOpenKeyExA(HKEY_LOCAL_MACHINE,
-                          "Software\\Microsoft\\Internet Explorer", 0,
-                          KEY_ALL_ACCESS, &hKey);
-    if (!dwRet)
+    ret = RegOpenKeyExA(HKEY_LOCAL_MACHINE, "Software\\Microsoft\\Internet Explorer", 0, KEY_ALL_ACCESS, &hKey);
+    if (!ret)
     {
-        dwRet = RegQueryValueExA(hKey, szIntegratedBrowser, 0, 0,
-                                (LPBYTE)&dwData, &dwSize);
-
-        if (!dwRet && dwState == 1)
+        size = sizeof(data);
+        ret = RegQueryValueExA(hKey, szIntegratedBrowser, 0, 0, (BYTE *)&data, &size);
+        if (!ret && state == PLATFORM_BROWSERONLY)
         {
             /* Value exists but browser is not integrated */
             RegDeleteValueA(hKey, szIntegratedBrowser);
         }
-        else if (dwRet && dwState == 2)
+        else if (ret && state == PLATFORM_INTEGRATED)
         {
             /* Browser is integrated but value does not exist */
-            dwData = TRUE;
-            RegSetValueExA(hKey, szIntegratedBrowser, 0, REG_DWORD,
-                           (LPBYTE)&dwData, sizeof(dwData));
+            data = TRUE;
+            RegSetValueExA(hKey, szIntegratedBrowser, 0, REG_DWORD, (BYTE *)&data, sizeof(data));
         }
         RegCloseKey(hKey);
     }
-    return dwState;
+
+    return state;
 }
 
 /*************************************************************************