From 8ff33f1bbbcd669c58781038fa386ec0d683e7dc Mon Sep 17 00:00:00 2001
From: yyc12345 <yyc12321@outlook.com>
Date: Mon, 12 Oct 2026 16:49:56 +0800
Subject: [PATCH] fix: include <objbase.h> before <exdisp.h> for MSVC

<exdisp.h> is not self-contained: its forward declarations use the
\interface\ macro, which is only defined in <combaseapi.h> via the
<objbase.h> include chain. Qt headers do not provide <windows.h>, so
including <exdisp.h> first caused C2146/C2371 parse errors on MSVC and
broke all IShellWindows usages. Include <objbase.h> as a prelude.
---
 app/playlistscouts/explorerscout.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/app/playlistscouts/explorerscout.cpp b/app/playlistscouts/explorerscout.cpp
index 79c5a62..3d0e28f 100644
--- a/app/playlistscouts/explorerscout.cpp
+++ b/app/playlistscouts/explorerscout.cpp
@@ -13,6 +13,15 @@
 
 #include <optional>
 
+// YYC MARK:
+// <exdisp.h> is not self-contained: it only includes <rpc.h>/<rpcndr.h> before
+// emitting `typedef interface ...` forward declarations, while the `interface`
+// macro (defined as `struct` for C++) lives in <combaseapi.h>, which is pulled
+// in via the <objbase.h> chain. Without this prelude, MSVC fails to parse those
+// forward declarations (C2146/C2371) and every IShellWindows usage breaks.
+// (Qt headers do not include <windows.h>, so nothing else provides it here.)
+#include <objbase.h>
+
 #include <exdisp.h>     // IShellWindows, CLSID_ShellWindows
 #include <servprov.h>   // IServiceProvider
 #include <shlguid.h>    // SID_STopLevelBrowser