From 4e58a588f12565c171320236e66903d89fe8eb38 Mon Sep 17 00:00:00 2001
From: fyr77 <login@notjakob.com>
Date: Wed, 19 Aug 2020 19:35:21 +0200
Subject: [PATCH] add IsDCH function

---
 EnvyUpdate/Util.cs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/EnvyUpdate/Util.cs b/EnvyUpdate/Util.cs
index 6f2be10..015b6fd 100644
--- a/EnvyUpdate/Util.cs
+++ b/EnvyUpdate/Util.cs
@@ -11,6 +11,7 @@ using System.Xml;
 using System.Xml.Linq;
 using System.Text.RegularExpressions;
 using System.Runtime.InteropServices;
+using Microsoft.Win32;
 
 namespace EnvyUpdate
 {
@@ -368,5 +369,10 @@ namespace EnvyUpdate
 
             return result;
         }
+        public static bool IsDCH()
+        {
+            RegistryKey nvlddmkm = Registry.LocalMachine.OpenSubKey(@"System\CurrentControlSet\services\nvlddmkm", true);
+            return nvlddmkm.GetValueNames().Contains("DCHUVen");
+        }
     }
 }
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