Created Windows 7 Sunset branch

src/managed/OpenLiveWriter.PostEditor/Updates/UpdateManager.cs

@@ -1,6 +1,7 @@
 // Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the MIT license. See LICENSE file in the project root for details.
 
+using Microsoft.Win32;
 using OpenLiveWriter.CoreServices;
 using OpenLiveWriter.CoreServices.ResourceDownloading;
 using Squirrel;
@@ -10,6 +11,7 @@ using System.Diagnostics;
 using System.Globalization;
 using System.Reflection;
 using System.Threading;
+using System.Windows.Forms;
 using System.Xml;
 
 namespace OpenLiveWriter.PostEditor.Updates
@@ -20,13 +22,38 @@ namespace OpenLiveWriter.PostEditor.Updates
 
         public static void CheckforUpdates(bool forceCheck = false)
         {
-            var checkNow = forceCheck || UpdateSettings.AutoUpdate;
-            var downloadUrl = UpdateSettings.CheckForBetaUpdates ?
-                UpdateSettings.BetaUpdateDownloadUrl : UpdateSettings.UpdateDownloadUrl;
+            var result = System.Windows.Forms.DialogResult.No;
 
-            // Schedule Open Live Writer 10 seconds after the launch
-            var delayUpdate = new DelayUpdateHelper(UpdateOpenLiveWriter(downloadUrl, checkNow), UPDATELAUNCHDELAY);
-            delayUpdate.StartBackgroundUpdate("Background OpenLiveWriter application update");
+            if (UpdateSettings.AutoUpdate && HasNet462OrLater())
+            {
+                result = MessageBox.Show("An update for OpenLiveWriter may be available. Would you like to check for it?"
+                    + Environment.NewLine
+                    + Environment.NewLine
+                    + "Select Cancel to permanently cancel update checks."
+                , "Update", MessageBoxButtons.YesNoCancel);
+
+                if (result == System.Windows.Forms.DialogResult.Yes)
+                {
+                    var checkNow = forceCheck || UpdateSettings.AutoUpdate;
+                    var downloadUrl = UpdateSettings.CheckForBetaUpdates ?
+                        UpdateSettings.BetaUpdateDownloadUrl : UpdateSettings.UpdateDownloadUrl;
+
+                    // Schedule Open Live Writer 10 seconds after the launch
+                    var delayUpdate = new DelayUpdateHelper(UpdateOpenLiveWriter(downloadUrl, checkNow), UPDATELAUNCHDELAY);
+                    delayUpdate.StartBackgroundUpdate("Background OpenLiveWriter application update");
+                } else if (result == System.Windows.Forms.DialogResult.Cancel) {
+                    MessageBox.Show(@"Attempting to disable AutoUpdate."
+                    + Environment.NewLine
+                    + Environment.NewLine
+                    + "AutoUpdate can be turned on and off by setting this registry key: " +
+                        @"HKEY_CURRENT_USER\Software\OpenLiveWriter\Updates\AutoUpdate to 0", "Disabling AutoUpdate", MessageBoxButtons.OK);
+                    UpdateSettings.AutoUpdate = false;
+
+                    //Manually writing out values since they're not always persisted
+                    Registry.SetValue(@"HKEY_CURRENT_USER\Software\OpenLiveWriter\Updates", "AutoUpdate", 0);
+                }
+                return;
+            }
         }
 
         private static ThreadStart UpdateOpenLiveWriter(string downloadUrl, bool checkNow)
@@ -50,6 +77,25 @@ namespace OpenLiveWriter.PostEditor.Updates
             };
         }
 
+        private static bool HasNet462OrLater()
+        {
+            const string subkey = @"SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full\";
+            using (RegistryKey ndpKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry32).OpenSubKey(subkey))
+            {
+                if (ndpKey != null && ndpKey.GetValue("Release") != null && (int)ndpKey.GetValue("Release") >= 394254) //.NET 4.6.1 or later is installed
+                {
+                    return true;
+                }
+                else
+                {
+                    Trace.WriteLine("Old operating system or .NET version, skipping update.");
+                    Trace.WriteLine("Windows Version: " + Environment.OSVersion.VersionString);
+                    Trace.WriteLine(".NET NPD version number: " + ndpKey);
+                }
+            }
+            return false;
+        }
+
         private const int UPDATELAUNCHDELAY = 10000;
     }
 }

version.txt

@@ -1 +1 @@
-0.6.0.0
+0.6.0.1