Working on improving the toast notifications [skip ci]

Greenshot/greenshot.manifest

@@ -1,44 +1,48 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<assembly xmlns="urn:schemas-microsoft-com:asm.v1" xmlns:asmv2="urn:schemas-microsoft-com:asm.v2" xmlns:asmv3="urn:schemas-microsoft-com:asm.v3" xmlns:winset="http://schemas.microsoft.com/SMI/2005/WindowsSettings" manifestVersion="1.0">
+<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0" xmlns:asmv2="urn:schemas-microsoft-com:asm.v2" xmlns:asmv3="urn:schemas-microsoft-com:asm.v3">
-	<!-- Make sure windows Vista and above treat Greenshot as "DPI Aware"
+  <!-- Make sure windows Vista and above treat Greenshot as "DPI Aware" See: http://msdn.microsoft.com/en-us/library/ms633543.aspx -->
-		See: http://msdn.microsoft.com/en-us/library/ms633543.aspx -->
+  <asmv3:application>
-	<asmv3:application>
+    <asmv3:windowsSettings xmlns:ws2005="http://schemas.microsoft.com/SMI/2005/WindowsSettings" xmlns:ws2011="http://schemas.microsoft.com/SMI/2011/WindowsSettings" xmlns:ws2016="http://schemas.microsoft.com/SMI/2016/WindowsSettings" xmlns:ws2017="http://schemas.microsoft.com/SMI/2017/WindowsSettings">
-		<asmv3:windowsSettings>
+      <ws2005:dpiAware>True/PM</ws2005:dpiAware>
-			<winset:dpiAware>True/PM</winset:dpiAware>
+      <!-- Important for Greenshot, so it can enumerate immersive windows (UWP etc) from the desktop -->
-		</asmv3:windowsSettings>
+      <ws2011:disableWindowFiltering>true</ws2011:disableWindowFiltering>
-	</asmv3:application>
+      <ws2011:printerDriverIsolation>true</ws2011:printerDriverIsolation>
+      <ws2016:dpiAwareness>PerMonitorV2,PerMonitor</ws2016:dpiAwareness>
+      <ws2016:longPathAware>true</ws2016:longPathAware>
+      <ws2017:gdiScaling>true</ws2017:gdiScaling>
+    </asmv3:windowsSettings>
+  </asmv3:application>
   <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
     <application>
       <!-- Windows 10 -->
-      <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}"/>
+      <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}" />
+      <maxversiontested Id="10.0.18362.0"/>
       <!-- Windows 8.1 -->
-      <supportedOS Id="{1f676c76-80e1-4239-95bb-83d0f6d0da78}"/>
+      <supportedOS Id="{1f676c76-80e1-4239-95bb-83d0f6d0da78}" />
       <!--Windows 8 -->
-      <supportedOS Id="{4a2f28e3-53b9-4441-ba9c-d69d4a4a6e38}"/>
+      <supportedOS Id="{4a2f28e3-53b9-4441-ba9c-d69d4a4a6e38}" />
       <!-- Windows 7 -->
-      <supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}"/>
+      <supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}" />
-      <!-- Windows Vista -->
-      <supportedOS Id="{e2011457-1546-43c5-a5fe-008deee3d3f0}"/>
     </application>
   </compatibility>
-	<!-- Set UAC level to "asInvoker" and disable registry virtualization -->
+  <!-- Set UAC level to "asInvoker" and disable registry virtualization -->
-	<asmv2:trustInfo>
+  <asmv2:trustInfo>
-		<asmv2:security>
+    <asmv2:security>
-			<asmv3:requestedPrivileges>
+      <asmv3:requestedPrivileges>
-				<!--
+        <!--
-					The presence of the "requestedExecutionLevel" node will disable
+          The presence of the "requestedExecutionLevel" node will disable
-					file and registry virtualization on Vista. See:
+          file and registry virtualization on Vista. See:
-					http://msdn.microsoft.com/en-us/library/aa965884%28v=vs.85%29.aspx
+          http://msdn.microsoft.com/en-us/library/aa965884%28v=vs.85%29.aspx
-					
+          
-					Use the "level" attribute to specify the User Account Control level:
+          Use the "level" attribute to specify the User Account Control level:
-						asInvoker            = Never prompt for elevation
+            asInvoker            = Never prompt for elevation
-						requireAdministrator = Always prompt for elevation
+            requireAdministrator = Always prompt for elevation
-						highestAvailable     = Prompt for elevation when started by administrator,
+            highestAvailable     = Prompt for elevation when started by administrator,
-						                       but do not prompt for administrator password when started by
+                                   but do not prompt for administrator password when started by
-						                       standard user.
+                                   standard user.
-				-->
+        -->
-				<asmv3:requestedExecutionLevel level="asInvoker"/>
+        <asmv3:requestedExecutionLevel level="asInvoker" />
-			</asmv3:requestedPrivileges>
+      </asmv3:requestedPrivileges>
-		</asmv2:security>
+    </asmv2:security>
-	</asmv2:trustInfo>
+  </asmv2:trustInfo>
-</assembly>
+</assembly>

GreenshotPlugin/Core/WindowsVersion.cs

@@ -15,6 +15,7 @@ namespace GreenshotPlugin.Core
         /// </summary>
         public static Version WinVersion { get; } = Environment.OSVersion.Version;
 
+        public static double WinVersionTotal = WinVersion.Major + (double)WinVersion.Minor / 10;
         /// <summary>
         ///     Test if the current OS is Windows 10
         /// </summary>
@@ -39,6 +40,8 @@ namespace GreenshotPlugin.Core
         /// <returns>true if we are running on Windows 7 or later</returns>
         public static bool IsWindows7OrLater { get; } = WinVersion.Major == 6 && WinVersion.Minor >= 1 || WinVersion.Major > 6;
 
+        public static bool IsWindows7OrLower { get; } = WinVersionTotal <= 6.1;
+        
         /// <summary>
         ///     Test if the current OS is Windows 8.0
         /// </summary>

GreenshotWin10Plugin/Native/DesktopNotificationManagerCompat.cs

@@ -0,0 +1,384 @@
+// ******************************************************************
+// Copyright (c) Microsoft. All rights reserved.
+// This code is licensed under the MIT License (MIT).
+// THE CODE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH
+// THE CODE OR THE USE OR OTHER DEALINGS IN THE CODE.
+// ******************************************************************
+
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Runtime.InteropServices;
+using System.Text;
+using Windows.UI.Notifications;
+using GreenshotPlugin.Core;
+
+namespace GreenshotWin10Plugin.Native
+{
+    public class DesktopNotificationManagerCompat
+    {
+        public const string TOAST_ACTIVATED_LAUNCH_ARG = "-ToastActivated";
+
+        private static bool _registeredAumidAndComServer;
+        private static string _aumid;
+        private static bool _registeredActivator;
+
+        /// <summary>
+        /// If not running under the Desktop Bridge, you must call this method to register your AUMID with the Compat library and to
+        /// register your COM CLSID and EXE in LocalServer32 registry. Feel free to call this regardless, and we will no-op if running
+        /// under Desktop Bridge. Call this upon application startup, before calling any other APIs.
+        /// </summary>
+        /// <param name="aumid">An AUMID that uniquely identifies your application.</param>
+        public static void RegisterAumidAndComServer<T>(string aumid)
+            where T : NotificationActivator
+        {
+            if (string.IsNullOrWhiteSpace(aumid))
+            {
+                throw new ArgumentException("You must provide an AUMID.", nameof(aumid));
+            }
+
+            // If running as Desktop Bridge
+            if (DesktopBridgeHelpers.IsRunningAsUwp())
+            {
+                // Clear the AUMID since Desktop Bridge doesn't use it, and then we're done.
+                // Desktop Bridge apps are registered with platform through their manifest.
+                // Their LocalServer32 key is also registered through their manifest.
+                _aumid = null;
+                _registeredAumidAndComServer = true;
+                return;
+            }
+
+            _aumid = aumid;
+
+            String exePath = Process.GetCurrentProcess().MainModule.FileName;
+            RegisterComServer<T>(exePath);
+
+            _registeredAumidAndComServer = true;
+        }
+
+        private static void RegisterComServer<T>(string exePath)
+            where T : NotificationActivator
+        {
+            // We register the EXE to start up when the notification is activated
+            string regString = $"SOFTWARE\\Classes\\CLSID\\{{{typeof(T).GUID}}}\\LocalServer32";
+            var key = Microsoft.Win32.Registry.CurrentUser.CreateSubKey(regString);
+
+            // Include a flag so we know this was a toast activation and should wait for COM to process
+            // We also wrap EXE path in quotes for extra security
+            key.SetValue(null, '"' + exePath + '"' + " " + TOAST_ACTIVATED_LAUNCH_ARG);
+        }
+
+        /// <summary>
+        /// Registers the activator type as a COM server client so that Windows can launch your activator.
+        /// </summary>
+        /// <typeparam name="T">Your implementation of NotificationActivator. Must have GUID and ComVisible attributes on class.</typeparam>
+        public static void RegisterActivator<T>() where T : NotificationActivator
+        {
+            // Register type
+            var regService = new RegistrationServices();
+
+            regService.RegisterTypeForComClients(
+                typeof(T),
+                RegistrationClassContext.LocalServer,
+                RegistrationConnectionType.MultipleUse);
+
+            _registeredActivator = true;
+        }
+
+        /// <summary>
+        /// Creates a toast notifier. You must have called <see cref="RegisterActivator{T}"/> first (and also <see cref="RegisterAumidAndComServer(string)"/> if you're a classic Win32 app), or this will throw an exception.
+        /// </summary>
+        /// <returns></returns>
+        public static ToastNotifier CreateToastNotifier()
+        {
+            EnsureRegistered();
+
+            if (_aumid != null)
+            {
+                // Non-Desktop Bridge
+                return ToastNotificationManager.CreateToastNotifier(_aumid);
+            }
+
+            // Desktop Bridge
+            return ToastNotificationManager.CreateToastNotifier();
+        }
+
+        /// <summary>
+        /// Gets the <see cref="DesktopNotificationHistoryCompat"/> object. You must have called <see cref="RegisterActivator{T}"/> first (and also <see cref="RegisterAumidAndComServer(string)"/> if you're a classic Win32 app), or this will throw an exception.
+        /// </summary>
+        public static DesktopNotificationHistoryCompat History
+        {
+            get
+            {
+                EnsureRegistered();
+
+                return new DesktopNotificationHistoryCompat(_aumid);
+            }
+        }
+
+        private static void EnsureRegistered()
+        {
+            // If not registered AUMID yet
+            if (!_registeredAumidAndComServer)
+            {
+                // Check if Desktop Bridge
+                if (DesktopBridgeHelpers.IsRunningAsUwp())
+                {
+                    // Implicitly registered, all good!
+                    _registeredAumidAndComServer = true;
+                }
+
+                else
+                {
+                    // Otherwise, incorrect usage
+                    throw new Exception("You must call RegisterAumidAndComServer first.");
+                }
+            }
+
+            // If not registered activator yet
+            if (!_registeredActivator)
+            {
+                // Incorrect usage
+                throw new Exception("You must call RegisterActivator first.");
+            }
+        }
+
+        /// <summary>
+        /// Gets a boolean representing whether http images can be used within toasts. This is true if running under Desktop Bridge.
+        /// </summary>
+        public static bool CanUseHttpImages { get { return DesktopBridgeHelpers.IsRunningAsUwp(); } }
+
+        /// <summary>
+        /// Code from https://github.com/qmatteoq/DesktopBridgeHelpers/edit/master/DesktopBridge.Helpers/Helpers.cs
+        /// </summary>
+        private static class DesktopBridgeHelpers
+        {
+            const long APPMODEL_ERROR_NO_PACKAGE = 15700L;
+
+            [DllImport("kernel32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
+            static extern int GetCurrentPackageFullName(ref int packageFullNameLength, StringBuilder packageFullName);
+
+            private static bool? _isRunningAsUwp;
+            public static bool IsRunningAsUwp()
+            {
+                if (_isRunningAsUwp != null) return _isRunningAsUwp.Value;
+
+                if (WindowsVersion.IsWindows7OrLower)
+                {
+                    _isRunningAsUwp = false;
+                }
+                else
+                {
+                    int length = 0;
+                    StringBuilder sb = new StringBuilder(0);
+                    GetCurrentPackageFullName(ref length, sb);
+
+                    sb = new StringBuilder(length);
+                    int result = GetCurrentPackageFullName(ref length, sb);
+
+                    _isRunningAsUwp = result != APPMODEL_ERROR_NO_PACKAGE;
+                }
+
+                return _isRunningAsUwp.Value;
+            }
+        }
+    }
+
+    /// <summary>
+    /// Manages the toast notifications for an app including the ability the clear all toast history and removing individual toasts.
+    /// </summary>
+    public sealed class DesktopNotificationHistoryCompat
+    {
+        private string _aumid;
+        private ToastNotificationHistory _history;
+
+        /// <summary>
+        /// Do not call this. Instead, call <see cref="DesktopNotificationManagerCompat.History"/> to obtain an instance.
+        /// </summary>
+        /// <param name="aumid"></param>
+        internal DesktopNotificationHistoryCompat(string aumid)
+        {
+            _aumid = aumid;
+            _history = ToastNotificationManager.History;
+        }
+
+        /// <summary>
+        /// Removes all notifications sent by this app from action center.
+        /// </summary>
+        public void Clear()
+        {
+            if (_aumid != null)
+            {
+                _history.Clear(_aumid);
+            }
+            else
+            {
+                _history.Clear();
+            }
+        }
+
+        /// <summary>
+        /// Gets all notifications sent by this app that are currently still in Action Center.
+        /// </summary>
+        /// <returns>A collection of toasts.</returns>
+        public IReadOnlyList<ToastNotification> GetHistory()
+        {
+            return _aumid != null ? _history.GetHistory(_aumid) : _history.GetHistory();
+        }
+
+        /// <summary>
+        /// Removes an individual toast, with the specified tag label, from action center.
+        /// </summary>
+        /// <param name="tag">The tag label of the toast notification to be removed.</param>
+        public void Remove(string tag)
+        {
+            if (_aumid != null)
+            {
+                _history.Remove(tag, string.Empty, _aumid);
+            }
+            else
+            {
+                _history.Remove(tag);
+            }
+        }
+
+        /// <summary>
+        /// Removes a toast notification from the action using the notification's tag and group labels.
+        /// </summary>
+        /// <param name="tag">The tag label of the toast notification to be removed.</param>
+        /// <param name="group">The group label of the toast notification to be removed.</param>
+        public void Remove(string tag, string group)
+        {
+            if (_aumid != null)
+            {
+                _history.Remove(tag, group, _aumid);
+            }
+            else
+            {
+                _history.Remove(tag, group);
+            }
+        }
+
+        /// <summary>
+        /// Removes a group of toast notifications, identified by the specified group label, from action center.
+        /// </summary>
+        /// <param name="group">The group label of the toast notifications to be removed.</param>
+        public void RemoveGroup(string group)
+        {
+            if (_aumid != null)
+            {
+                _history.RemoveGroup(group, _aumid);
+            }
+            else
+            {
+                _history.RemoveGroup(group);
+            }
+        }
+    }
+
+    /// <summary>
+    /// Apps must implement this activator to handle notification activation.
+    /// </summary>
+    public abstract class NotificationActivator : NotificationActivator.INotificationActivationCallback
+    {
+        public void Activate(string appUserModelId, string invokedArgs, NOTIFICATION_USER_INPUT_DATA[] data, uint dataCount)
+        {
+            OnActivated(invokedArgs, new NotificationUserInput(data), appUserModelId);
+        }
+
+        /// <summary>
+        /// This method will be called when the user clicks on a foreground or background activation on a toast. Parent app must implement this method.
+        /// </summary>
+        /// <param name="arguments">The arguments from the original notification. This is either the launch argument if the user clicked the body of your toast, or the arguments from a button on your toast.</param>
+        /// <param name="userInput">Text and selection values that the user entered in your toast.</param>
+        /// <param name="appUserModelId">Your AUMID.</param>
+        public abstract void OnActivated(string arguments, NotificationUserInput userInput, string appUserModelId);
+
+        // These are the new APIs for Windows 10
+        #region NewAPIs
+        [StructLayout(LayoutKind.Sequential), Serializable]
+        public struct NOTIFICATION_USER_INPUT_DATA
+        {
+            [MarshalAs(UnmanagedType.LPWStr)]
+            public string Key;
+
+            [MarshalAs(UnmanagedType.LPWStr)]
+            public string Value;
+        }
+
+        [ComImport,
+        Guid("53E31837-6600-4A81-9395-75CFFE746F94"), ComVisible(true),
+        InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+        public interface INotificationActivationCallback
+        {
+            void Activate(
+                [In, MarshalAs(UnmanagedType.LPWStr)]
+            string appUserModelId,
+                [In, MarshalAs(UnmanagedType.LPWStr)]
+            string invokedArgs,
+                [In, MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 3)]
+            NOTIFICATION_USER_INPUT_DATA[] data,
+                [In, MarshalAs(UnmanagedType.U4)]
+            uint dataCount);
+        }
+        #endregion
+    }
+
+    /// <summary>
+    /// Text and selection values that the user entered on your notification. The Key is the ID of the input, and the Value is what the user entered.
+    /// </summary>
+    public class NotificationUserInput : IReadOnlyDictionary<string, string>
+    {
+        private NotificationActivator.NOTIFICATION_USER_INPUT_DATA[] _data;
+
+        internal NotificationUserInput(NotificationActivator.NOTIFICATION_USER_INPUT_DATA[] data)
+        {
+            _data = data;
+        }
+
+        public string this[string key] => _data.First(i => i.Key == key).Value;
+
+        public IEnumerable<string> Keys => _data.Select(i => i.Key);
+
+        public IEnumerable<string> Values => _data.Select(i => i.Value);
+
+        public int Count => _data.Length;
+
+        public bool ContainsKey(string key)
+        {
+            return _data.Any(i => i.Key == key);
+        }
+
+        public IEnumerator<KeyValuePair<string, string>> GetEnumerator()
+        {
+            return _data.Select(i => new KeyValuePair<string, string>(i.Key, i.Value)).GetEnumerator();
+        }
+
+        public bool TryGetValue(string key, out string value)
+        {
+            foreach (var item in _data)
+            {
+                if (item.Key == key)
+                {
+                    value = item.Value;
+                    return true;
+                }
+            }
+
+            value = null;
+            return false;
+        }
+
+        IEnumerator IEnumerable.GetEnumerator()
+        {
+            return GetEnumerator();
+        }
+    }
+}

GreenshotWin10Plugin/Native/GreenshotNotificationActivator.cs

@@ -0,0 +1,41 @@
+/*
+ * Greenshot - a free and open source screenshot tool
+ * Copyright (C) 2007-2020 Thomas Braun, Jens Klingen, Robin Krom
+ *
+ * For more information see: http://getgreenshot.org/
+ * The Greenshot project is hosted on GitHub https://github.com/greenshot/greenshot
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 1 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+using System.Runtime.InteropServices;
+using log4net;
+
+namespace GreenshotWin10Plugin.Native
+{
+    // The GUID CLSID must be unique to your app. Create a new GUID if copying this code.
+    [ClassInterface(ClassInterfaceType.None)]
+    [ComSourceInterfaces(typeof(INotificationActivationCallback))]
+    [Guid("F48E86D3-E34C-4DB7-8F8F-9A0EA55F0D08"), ComVisible(true)]
+    public class GreenshotNotificationActivator : NotificationActivator
+    {
+        private static readonly ILog Log = LogManager.GetLogger(typeof(GreenshotNotificationActivator));
+
+        public override void OnActivated(string invokedArgs, NotificationUserInput userInput, string appUserModelId)
+        {
+            // TODO: Handle activation
+            Log.Info("Activated");
+        }
+    }
+}

GreenshotWin10Plugin/ToastNotificationService.cs

@@ -27,6 +27,7 @@ using Windows.UI.Notifications;
 using GreenshotPlugin.Core;
 using GreenshotPlugin.IniFile;
 using GreenshotPlugin.Interfaces;
+using GreenshotWin10Plugin.Native;
 using log4net;
 
 namespace GreenshotWin10Plugin
@@ -42,6 +43,11 @@ namespace GreenshotWin10Plugin
         private readonly string _imageFilePath;
         public ToastNotificationService()
         {
+            // Register AUMID and COM server (for Desktop Bridge apps, this no-ops)
+            DesktopNotificationManagerCompat.RegisterAumidAndComServer<GreenshotNotificationActivator>("Greenshot.Greenshot");
+            // Register COM server and activator type
+            DesktopNotificationManagerCompat.RegisterActivator<GreenshotNotificationActivator>();
+
             var localAppData = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "Greenshot");
             if (!Directory.Exists(localAppData))
             {
@@ -58,6 +64,12 @@ namespace GreenshotWin10Plugin
             greenshotImage.Save(_imageFilePath, ImageFormat.Png);
         }
 
+        /// <summary>
+        /// This creates the actual toast
+        /// </summary>
+        /// <param name="message">string</param>
+        /// <param name="onClickAction">Action called when clicked</param>
+        /// <param name="onClosedAction">Action called when the toast is closed</param>
         private void ShowMessage(string message, Action onClickAction, Action onClosedAction)
         {
             // Do not inform the user if this is disabled
@@ -65,6 +77,14 @@ namespace GreenshotWin10Plugin
             {
                 return;
             }
+            // Prepare the toast notifier. Be sure to specify the AppUserModelId on your application's shortcut!
+            var toastNotifier = DesktopNotificationManagerCompat.CreateToastNotifier();
+            if (toastNotifier.Setting != NotificationSetting.Enabled)
+            {
+                Log.DebugFormat("Ignored toast due to {0}", toastNotifier.Setting);
+                return;
+            }
+
             // Get a toast XML template
             var toastXml = ToastNotificationManager.GetTemplateContent(ToastTemplateType.ToastImageAndText01);
 
@@ -83,7 +103,6 @@ namespace GreenshotWin10Plugin
                 }
             }
 
-
             // Create the toast and attach event listeners
             var toast = new ToastNotification(toastXml);
 
@@ -121,10 +140,17 @@ namespace GreenshotWin10Plugin
                 toast.Dismissed -= ToastDismissedHandler;
                 // Remove the other handler too
                 toast.Activated -= ToastActivatedHandler;
+                toast.Failed -= ToastOnFailed;
             }
             toast.Dismissed += ToastDismissedHandler;
-            // Show the toast. Be sure to specify the AppUserModelId on your application's shortcut!
+            toast.Failed += ToastOnFailed;
-            ToastNotificationManager.CreateToastNotifier(@"Greenshot").Show(toast);
+            toastNotifier.Show(toast);
+        }
+
+        private void ToastOnFailed(ToastNotification sender, ToastFailedEventArgs args)
+        {
+            Log.WarnFormat("Failed to display a toast due to {0}", args.ErrorCode);
+            Log.Debug(sender.Content.GetXml());
         }
 
         public void ShowWarningMessage(string message, int timeout, Action onClickAction = null, Action onClosedAction = null)