Re-add error handler.

Author: Aetopia

src/BedrockUpdater.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <OutputType>WinExe</OutputType>
+    <OutputType>Exe</OutputType>
     <TargetFramework>net481</TargetFramework>
     <UseWindowsForms>true</UseWindowsForms>
     <UseWPF>true</UseWPF>

src/MainWindow.cs

@@ -30,6 +30,7 @@ internal MainWindow(bool preview)
         WindowStartupLocation = WindowStartupLocation.CenterScreen;
         ResizeMode = ResizeMode.NoResize;
         SizeToContent = SizeToContent.WidthAndHeight;
+        Closed += (sender, e) => Environment.Exit(0);
 
         WindowsFormsHost host = new()
         {

src/Program.cs

@@ -9,6 +9,13 @@ static void Main(string[] args)
     {
         using Mutex mutex = new(true, "C7B58EAD-356C-40A1-A145-7262C3C04D00", out bool createdNew);
         if (Environment.OSVersion.Version < new Version(10, 0, 19041, 0) || NativeMethods.IsOS(29) || !createdNew) return;
+        AppDomain.CurrentDomain.UnhandledException += (sender, e) =>
+        {
+            var exception = (Exception)e.ExceptionObject;
+            while (exception.InnerException != null) exception = exception.InnerException;
+            NativeMethods.ShellMessageBox(lpcText: exception.Message);
+            Environment.Exit(0);
+        };
         new MainWindow(args.FirstOrDefault()?.Equals("/preview", StringComparison.OrdinalIgnoreCase) ?? false).ShowDialog();
     }
 }