From 627f8da3cdf19e049ee9120d6b5a67f80f8af7cf Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Herm=C3=A8s=20B=C3=A9lusca-Ma=C3=AFto?=
 <hermes.belusca-maito@reactos.org>
Date: Mon, 14 Jul 2025 20:22:36 +0200
Subject: [PATCH] [WINLOGON] SASWindowProc(): Call PostQuitMessage(0) on
 WM_DESTROY

Now the WinMain() message loop correctly exits and we get to perform
last-time cleanup. However, the main thread must not exit (except under
certain conditions, not yet implemented), so we Sleep for an infinite
amount of time.
---
 base/system/winlogon/sas.c      | 1 +
 base/system/winlogon/winlogon.c | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/base/system/winlogon/sas.c b/base/system/winlogon/sas.c
index c846d05ca52..975acce1592 100644
--- a/base/system/winlogon/sas.c
+++ b/base/system/winlogon/sas.c
@@ -1542,6 +1542,7 @@ SASWindowProc(
         {
             if (!GetSetupType())
                 UnregisterHotKeys(Session, hwndDlg);
+            PostQuitMessage(0);
             return TRUE;
         }
         case WM_SETTINGCHANGE:
diff --git a/base/system/winlogon/winlogon.c b/base/system/winlogon/winlogon.c
index 480272ac80a..8500560f4d4 100644
--- a/base/system/winlogon/winlogon.c
+++ b/base/system/winlogon/winlogon.c
@@ -614,6 +614,7 @@ WinMain(
     CleanupNotifications();
 
     /* We never go there */
-
+    // TODO: Shutdown if we are in session 0, otherwise let the process terminate.
+    SleepEx(INFINITE, FALSE);
     return 0;
 }