[SDK][SHELL32][SHLWAPI][SHLWAPI_APITEST] Split IShellFolder helpers hack (#7685)

Splitting the hack will improve our code quality.
JIRA issue: N/A
- Add sdk/include/reactos/ishellfolder_helpers.h
  header file.
- Split conflicting code.

dll/win32/shell32/precomp.h

@@ -42,8 +42,8 @@
 #include <shlguid_undoc.h>
 #include <shlobj_undoc.h>
 
-#define SHLWAPI_ISHELLFOLDER_HELPERS
 #include <shlwapi_undoc.h>
+#include <ishellfolder_helpers.h>
 
 #include <shellapi.h>
 #undef ShellExecute

dll/win32/shlwapi/utils.cpp

@@ -21,15 +21,8 @@
 #include <shlguid_undoc.h>
 #include <atlstr.h>
 
-/*
- * HACK!
- */
-#undef IShellFolder_GetDisplayNameOf
-#undef IShellFolder_ParseDisplayName
-#undef IShellFolder_CompareIDs
-
-#define SHLWAPI_ISHELLFOLDER_HELPERS /* HACK! */
 #include <shlwapi_undoc.h>
+#include <ishellfolder_helpers.h>
 
 #include <strsafe.h>
 

modules/rostests/apitests/shlwapi/IShellFolderHelpers.cpp

@@ -10,8 +10,8 @@
 #include <shlwapi.h>
 #include <versionhelpers.h>
 
-#define SHLWAPI_ISHELLFOLDER_HELPERS
 #include <shlwapi_undoc.h>
+#include <ishellfolder_helpers.h>
 
 static INT s_nStep = 0;
 

sdk/include/reactos/ishellfolder_helpers.h

@@ -0,0 +1,51 @@
+/*
+ * PROJECT:     ReactOS header
+ * LICENSE:     LGPL-2.1-or-later (https://spdx.org/licenses/LGPL-2.1-or-later)
+ * PURPOSE:     SHLWAPI IShellFolder helpers
+ * COPYRIGHT:   Copyright 2009 Andrew Hill <ash77 at domain reactos.org>
+ *              Copyright 2025 Katayama Hirofumi MZ <katayama.hirofumi.mz@gmail.com>
+ */
+
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* HACK! These function names are conflicting with <shobjidl.h> functions. */
+#undef IShellFolder_GetDisplayNameOf
+#undef IShellFolder_ParseDisplayName
+#undef IShellFolder_CompareIDs
+
+HRESULT WINAPI
+IShellFolder_GetDisplayNameOf(
+    _In_ IShellFolder *psf,
+    _In_ LPCITEMIDLIST pidl,
+    _In_ SHGDNF uFlags,
+    _Out_ LPSTRRET lpName,
+    _In_ DWORD dwRetryFlags);
+
+/* Flags for IShellFolder_GetDisplayNameOf */
+#define SFGDNO_RETRYWITHFORPARSING  0x00000001
+#define SFGDNO_RETRYALWAYS          0x80000000
+
+HRESULT WINAPI
+IShellFolder_ParseDisplayName(
+    _In_ IShellFolder *psf,
+    _In_ HWND hwndOwner,
+    _In_ LPBC pbcReserved,
+    _In_ LPOLESTR lpszDisplayName,
+    _Out_ ULONG *pchEaten,
+    _Out_ PIDLIST_RELATIVE *ppidl,
+    _Out_ ULONG *pdwAttributes);
+
+EXTERN_C HRESULT WINAPI
+IShellFolder_CompareIDs(
+    _In_ IShellFolder *psf,
+    _In_ LPARAM lParam,
+    _In_ PCUIDLIST_RELATIVE pidl1,
+    _In_ PCUIDLIST_RELATIVE pidl2);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif

sdk/include/reactos/shlobj_undoc.h

@@ -9,7 +9,6 @@
 
 #pragma once
 
-#define SHLWAPI_ISHELLFOLDER_HELPERS
 #include <shlwapi_undoc.h> // For ASSOCQUERY
 
 #ifdef __cplusplus

sdk/include/reactos/shlwapi_undoc.h

@@ -376,41 +376,6 @@ DWORD WINAPI SHGetObjectCompatFlags(IUnknown *pUnk, const CLSID *clsid);
 #define SHACF_WIN95SHLEXEC 0x00000200 /* Geoff Chappell */
 DWORD WINAPI SHGetAppCompatFlags(DWORD dwMask);
 
-/*
- * HACK! These functions are conflicting with <shobjidl.h> inline functions...
- * We provide a macro option SHLWAPI_ISHELLFOLDER_HELPERS for using these functions.
- */
-#ifdef SHLWAPI_ISHELLFOLDER_HELPERS
-HRESULT WINAPI
-IShellFolder_GetDisplayNameOf(
-    _In_ IShellFolder *psf,
-    _In_ LPCITEMIDLIST pidl,
-    _In_ SHGDNF uFlags,
-    _Out_ LPSTRRET lpName,
-    _In_ DWORD dwRetryFlags);
-
-/* Flags for IShellFolder_GetDisplayNameOf */
-#define SFGDNO_RETRYWITHFORPARSING  0x00000001
-#define SFGDNO_RETRYALWAYS          0x80000000
-
-HRESULT WINAPI
-IShellFolder_ParseDisplayName(
-    _In_ IShellFolder *psf,
-    _In_ HWND hwndOwner,
-    _In_ LPBC pbcReserved,
-    _In_ LPOLESTR lpszDisplayName,
-    _Out_ ULONG *pchEaten,
-    _Out_ PIDLIST_RELATIVE *ppidl,
-    _Out_ ULONG *pdwAttributes);
-
-EXTERN_C HRESULT WINAPI
-IShellFolder_CompareIDs(
-    _In_ IShellFolder *psf,
-    _In_ LPARAM lParam,
-    _In_ PCUIDLIST_RELATIVE pidl1,
-    _In_ PCUIDLIST_RELATIVE pidl2);
-#endif /* SHLWAPI_ISHELLFOLDER_HELPERS */
-
 /*****************************************************************************
  * IAssociationElementOld interface
  *