From 22f3c026dfb16f68808235cee01176f590ca4cf8 Mon Sep 17 00:00:00 2001
From: Swarley97 <nootny97@outlook.de>
Date: Thu, 4 Sep 2025 15:50:51 +0200
Subject: [PATCH] fix os timer in windows dispatcher (#19597)

Co-authored-by: Tim Nootny <tim.nootny@empowersuite.com>
---
 src/Windows/Avalonia.Win32/Win32DispatcherImpl.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Windows/Avalonia.Win32/Win32DispatcherImpl.cs b/src/Windows/Avalonia.Win32/Win32DispatcherImpl.cs
index 581e5fa306..2e05656472 100644
--- a/src/Windows/Avalonia.Win32/Win32DispatcherImpl.cs
+++ b/src/Windows/Avalonia.Win32/Win32DispatcherImpl.cs
@@ -46,7 +46,7 @@ internal class Win32DispatcherImpl : IControlledDispatcherImpl
         }
         else
         {
-            var interval = (uint)Math.Min(int.MaxValue - 10, Math.Max(1, Now - dueTimeInMs.Value));
+            var interval = (uint)Math.Min(int.MaxValue - 10, Math.Max(1, dueTimeInMs.Value - Now));
             SetTimer(
                 _messageWindow,
                 (IntPtr)Win32Platform.TIMERID_DISPATCHER,