From 5e380bdf732744027e6245fd7f1792b2ef03ad89 Mon Sep 17 00:00:00 2001
From: Gerardo Grignoli <gerardog@gmail.com>
Date: Tue, 28 May 2024 01:35:51 -0300
Subject: [PATCH] UACWindowFocusHelper thread properly set as background
 thread.

---
 src/gsudo/Helpers/ServiceHelper.cs        | 8 ++++----
 src/gsudo/Helpers/UACWindowFocusHelper.cs | 8 ++++++++
 2 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/src/gsudo/Helpers/ServiceHelper.cs b/src/gsudo/Helpers/ServiceHelper.cs
index c95eed9..d18feab 100644
--- a/src/gsudo/Helpers/ServiceHelper.cs
+++ b/src/gsudo/Helpers/ServiceHelper.cs
@@ -178,19 +178,19 @@ internal static SafeProcessHandle StartService(int? allowedPid, TimeSpan? cacheD
                     if (SecurityHelper.IsMemberOfLocalAdmins() && InputArguments.GetIntegrityLevel() >= IntegrityLevel.High)
                     {
                         // UAC Popup doesnt always have focus, so we try to bring it to the front.
-                        new Thread(UACWindowFocusHelper.FocusUacWindow).Start();
-
+                        UACWindowFocusHelper.StartBackgroundThreadToFocusUacWindow();
                         ret = ProcessFactory.StartElevatedDetached(ownExe, commandLine, !InputArguments.Debug).GetSafeProcessHandle();
                     }
                     else
+                    {
                         ret = ProcessFactory.StartDetached(ownExe, commandLine, null, !InputArguments.Debug).GetSafeProcessHandle();
+                    }
                 }
             }
             else
             {
                 // UAC Popup doesnt always have focus, so we try to bring it to the front.
-                new Thread(UACWindowFocusHelper.FocusUacWindow).Start();
-                
+                UACWindowFocusHelper.StartBackgroundThreadToFocusUacWindow();
                 ret = ProcessFactory.StartElevatedDetached(ownExe, commandLine, !InputArguments.Debug).GetSafeProcessHandle();
             }
 
diff --git a/src/gsudo/Helpers/UACWindowFocusHelper.cs b/src/gsudo/Helpers/UACWindowFocusHelper.cs
index f2a9851..d4b22e1 100644
--- a/src/gsudo/Helpers/UACWindowFocusHelper.cs
+++ b/src/gsudo/Helpers/UACWindowFocusHelper.cs
@@ -1,6 +1,7 @@
 using gsudo.Native;
 using System;
 using System.Runtime.InteropServices;
+using System.Threading;
 
 namespace gsudo.Helpers
 {
@@ -9,6 +10,13 @@ internal class UACWindowFocusHelper
         [DllImport("user32.dll", SetLastError = true)]
         private static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
 
+        internal static void StartBackgroundThreadToFocusUacWindow()
+        {
+            var focusThread = new Thread(UACWindowFocusHelper.FocusUacWindow);
+            focusThread.IsBackground = true;
+            focusThread.Start();
+        }
+
         internal static void FocusUacWindow()
         {
             try