From 7c0bf9f1f44339ae0d64581b62f98109e148e7c0 Mon Sep 17 00:00:00 2001
From: Stefan Markovic <57057282+stefansjfw@users.noreply.github.com>
Date: Wed, 28 Sep 2022 15:31:25 +0200
Subject: [PATCH] [FileExplorer Add-ons][Dev files] Add regfile registry key
 for previewing .reg files (#20579)

* Add regfile registry key for previewing .reg files

* Address PR comments
---
 src/common/utils/registry.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/common/utils/registry.h b/src/common/utils/registry.h
index 2297c3850c..689b436a7b 100644
--- a/src/common/utils/registry.h
+++ b/src/common/utils/registry.h
@@ -378,6 +378,12 @@ namespace registry
                     std::wstring kindMapPath = L"Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\KindMap";
                     changes.push_back({ HKEY_LOCAL_MACHINE, kindMapPath, fileType, fileKindType, false});
                 }
+                if (handlerType == PreviewHandlerType::preview && fileType == L".reg")
+                {
+                    // this regfile registry key has precedence over Software\Classes\.reg for .reg files
+                    std::wstring regfilePath = L"Software\\Classes\\regfile\\shellex\\" + IPREVIEW_HANDLER_CLSID + L"\\";
+                    changes.push_back({ scope, regfilePath, std::nullopt, handlerClsid });
+                }
             }
 
             if (handlerType == PreviewHandlerType::preview)