try block windows shutdown from windows update

OKEGui/OKEGui/App.xaml

@@ -2,6 +2,7 @@
              xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
              Startup="AppStartup"
+             SessionEnding="App_SessionEnding"
              StartupUri="Gui/MainWindow.xaml">
     <Application.Resources>
     </Application.Resources>

OKEGui/OKEGui/App.xaml.cs

@@ -1,6 +1,9 @@
 using OKEGui.Utils;
 using System;
+using System.Diagnostics;
+using System.Runtime.InteropServices;
 using System.Windows;
+using System.Windows.Interop;
 
 namespace OKEGui
 {
@@ -11,6 +14,25 @@ namespace OKEGui
     public partial class App : Application
     {
         private static readonly NLog.Logger Logger = NLog.LogManager.GetCurrentClassLogger();
+        public const int WM_QUERYENDSESSION = 0x11;
+        public const int WM_ENDSESSION = 0x16;
+
+        [DllImport("user32.dll", SetLastError = true)]
+        static extern bool ShutdownBlockReasonCreate(IntPtr hWnd, [MarshalAs(UnmanagedType.LPWStr)] string reason);
+        [DllImport("user32.dll", SetLastError = true)]
+        static extern bool ShutdownBlockReasonDestroy(IntPtr hWnd);
+        [DllImport("kernel32.dll")]
+        static extern bool SetProcessShutdownParameters(uint dwLevel, uint dwFlags);
+
+        private void App_SessionEnding(object sender, SessionEndingCancelEventArgs e)
+        {
+
+            IntPtr windowHandle = Process.GetCurrentProcess().MainWindowHandle;
+            // Prevent windows shutdown
+            ShutdownBlockReasonCreate(windowHandle, "干啥呢干啥呢，OKEGui还没关呢？");
+            e.Cancel = true;
+
+        }
 
         private void AppStartup(object sender, StartupEventArgs e)
         {

OKEGui/OKEGui/Gui/MainWindow.xaml.cs

@@ -10,6 +10,7 @@
 using OKEGui.Worker;
 using System.IO;
 using System.Text.RegularExpressions;
+using System.Runtime.InteropServices;
 
 namespace OKEGui
 {
@@ -82,8 +83,12 @@ protected override void OnSourceInitialized(EventArgs e)
             {
                 hwndSource.AddHook(_systemMenu.HandleMessage);
             }
+            //HwndSource source = PresentationSource.FromVisual(this) as HwndSource;
+            //source.AddHook(WndProc);
         }
 
+
+
         private void Checkbox_Changed(object sender, RoutedEventArgs e)
         {
             if (!wm.IsRunning)
@@ -346,6 +351,7 @@ void MainWindow_Closing(object sender, CancelEventArgs e)
                 }
                 else
                 {
+                    IntPtr windowHandle = Process.GetCurrentProcess().MainWindowHandle;
                     SubProcessService.KillAll();
                 }
             }