From 507aae4c30510eb6a6176c5cfd55b0366bf1370c Mon Sep 17 00:00:00 2001
From: Mark Jansen <mark.jansen@reactos.org>
Date: Wed, 19 Apr 2023 20:27:31 +0200
Subject: [PATCH] [ATL] Take _ATL_FREE_THREADED into account

When it is not defined, COM should not be initialize multithreaded
---
 sdk/lib/atl/atlbase.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/sdk/lib/atl/atlbase.h b/sdk/lib/atl/atlbase.h
index 1b0b0361b6a..d6e0e9ec386 100644
--- a/sdk/lib/atl/atlbase.h
+++ b/sdk/lib/atl/atlbase.h
@@ -849,7 +849,12 @@ public:
 
     static HRESULT InitializeCom()
     {
-        return ::CoInitializeEx(NULL, COINIT_MULTITHREADED);
+#if defined(_ATL_FREE_THREADED)
+        constexpr COINIT coInit = COINIT_MULTITHREADED;
+#else
+        constexpr COINIT coInit = COINIT_APARTMENTTHREADED;
+#endif
+        return ::CoInitializeEx(NULL, coInit);
     }
 
     static void UninitializeCom()