Move *everything* from setting flyout content and the flyout icons to a UWP control and simplified creation of the wpf host via a NotificationFlyoutApplication where you only need to set the UWP flyout

samples/NotificationFlyoutSample.Host/NotificationFlyoutSample.Host.csproj

@@ -11,11 +11,6 @@
     <EnableXBindDiagnostics>false</EnableXBindDiagnostics>
   </PropertyGroup>
 
-  <ItemGroup>
-    <None Remove="Assets\Icon-Light.ico" />
-    <None Remove="Assets\Icon.ico" />
-  </ItemGroup>
-
   <ItemGroup>
     <PackageReference Include="Microsoft.Toolkit.Wpf.UI.XamlHost" Version="6.1.2" />
   </ItemGroup>
@@ -26,10 +21,5 @@
     <ProjectReference Include="..\..\src\NotificationFlyout.Wpf.UI\NotificationFlyout.Wpf.UI.csproj" />
     <ProjectReference Include="..\NotificationFlyoutSample\NotificationFlyoutSample.csproj" />
   </ItemGroup>
-
-  <ItemGroup>
-    <Resource Include="Assets\Icon-Light.ico" />
-    <Resource Include="Assets\Icon.ico" />
-  </ItemGroup>
   
 </Project>

samples/NotificationFlyoutSample.Host/Program.cs

@@ -1,4 +1,5 @@
-using System;
+using NotificationFlyout.Wpf.UI.Controls;
+using System;
 
 namespace NotificationFlyoutSample.Host
 {
@@ -10,7 +11,10 @@ namespace NotificationFlyoutSample.Host
             using (new NotificationFlyoutSample.App())
             {
                 var app = new App();
-                new SampleNotificationFlyout();
+                new NotificationFlyoutApplication
+                { 
+                    Flyout = new Shell()
+                };
                 app.Run();
             }
         }

samples/NotificationFlyoutSample.Host/SampleNotificationFlyout.xaml

@@ -1,9 +0,0 @@
-<NotificationFlyout
-    x:Class="NotificationFlyoutSample.Host.SampleNotificationFlyout"
-    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-    xmlns:uwp="clr-namespace:NotificationFlyoutSample;assembly=NotificationFlyoutSample"
-    IconSource="/Assets/Icon.ico"
-    LightIconSource="/Assets/Icon-Light.ico">
-    <uwp:Shell />
-</NotificationFlyout>

samples/NotificationFlyoutSample.Host/SampleNotificationFlyout.xaml.cs

@@ -1,10 +0,0 @@
-namespace NotificationFlyoutSample.Host
-{
-    public partial class SampleNotificationFlyout
-    {
-        public SampleNotificationFlyout()
-        {
-            InitializeComponent();
-        }
-    }
-}

samples/NotificationFlyoutSample/NotificationFlyoutSample.csproj

@@ -130,6 +130,8 @@
     </AppxManifest>
   </ItemGroup>
   <ItemGroup>
+    <Content Include="Assets\Icon-Light.ico" />
+    <Content Include="Assets\Icon.ico" />
     <Content Include="Properties\Default.rd.xml" />
     <Content Include="Assets\LockScreenLogo.scale-200.png" />
     <Content Include="Assets\SplashScreen.scale-200.png" />

samples/NotificationFlyoutSample/Shell.xaml

@@ -1,21 +1,25 @@
-<UserControl
+<controls:NotificationFlyout
     x:Class="NotificationFlyoutSample.Shell"
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-    xmlns:winui="using:Microsoft.UI.Xaml.Controls">
+    xmlns:controls="using:NotificationFlyout.Uwp.UI.Controls"
-    <StackPanel
+    xmlns:winui="using:Microsoft.UI.Xaml.Controls"
-        Width="330"
+    LightIconSource="/Assets/Icon.ico">
-        Height="500"
+    <controls:NotificationFlyout.Content>
-        Margin="24">
+        <StackPanel
-        <ComboBox x:Name="Theme" SelectionChanged="Theme_SelectionChanged">
+            Width="330"
-            <ComboBoxItem Content="Default" />
+            Height="500"
-            <ComboBoxItem Content="Dark" />
+            Margin="24">
-            <ComboBoxItem Content="Light" />
+            <ComboBox x:Name="Theme" SelectionChanged="Theme_SelectionChanged">
-        </ComboBox>
+                <ComboBoxItem Content="Default" />
-        <Button Margin="0,0,0,8" Content="Button" />
+                <ComboBoxItem Content="Dark" />
-        <Slider Margin="0,0,0,8" />
+                <ComboBoxItem Content="Light" />
-        <TextBox Margin="0,0,0,8" />
+            </ComboBox>
-        <ToggleButton Margin="0,0,0,8" />
+            <Button Margin="0,0,0,8" Content="Button" />
-        <CalendarView Margin="0,0,0,8" />
+            <Slider Margin="0,0,0,8" />
-    </StackPanel>
+            <TextBox Margin="0,0,0,8" />
-</UserControl>
+            <ToggleButton Margin="0,0,0,8" />
+            <CalendarView Margin="0,0,0,8" />
+        </StackPanel>
+    </controls:NotificationFlyout.Content>
+</controls:NotificationFlyout>

samples/NotificationFlyoutSample/Shell.xaml.cs

@@ -9,18 +9,18 @@
 
         private void Theme_SelectionChanged(object sender, Windows.UI.Xaml.Controls.SelectionChangedEventArgs e)
         {
-            switch (Theme.SelectedIndex)
+            //switch (Theme.SelectedIndex)
-            {
+            //{
-                case 0:
+            //    case 0:
-                    RequestedTheme = Windows.UI.Xaml.ElementTheme.Default;
+            //        RequestedTheme = Windows.UI.Xaml.ElementTheme.Default;
-                    break;
+            //        break;
-                case 1:
+            //    case 1:
-                    RequestedTheme = Windows.UI.Xaml.ElementTheme.Dark;
+            //        RequestedTheme = Windows.UI.Xaml.ElementTheme.Dark;
-                    break;
+            //        break;
-                case 2:
+            //    case 2:
-                    RequestedTheme = Windows.UI.Xaml.ElementTheme.Light;
+            //        RequestedTheme = Windows.UI.Xaml.ElementTheme.Light;
-                    break;
+            //        break;
-            }
+            //}
         }
     }
 }

src/NotificationFlyout.Shared.UI/Class1.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Drawing;
+
+namespace NotificationFlyout.Shared.UI
+{
+    public static class ImageSourceExtensions
+    {
+        public static Icon ConvertToIcon(this ImageSource imageSource, uint dpi)
+        {
+            if (imageSource == null) return null;
+
+            var uri = new Uri(imageSource.ToString(), UriKind.RelativeOrAbsolute);
+
+            var streamResource = Application.GetResourceStream(uri);
+            if (streamResource == null) throw new ArgumentException(nameof(streamResource));
+
+            return new Icon(streamResource.Stream, new System.Drawing.Size(PInvoke.GetSystemMetricsForDpi((int)SystemMetricFlag.SM_CXICON, dpi), PInvoke.GetSystemMetricsForDpi((int)SystemMetricFlag.SM_CYICON, dpi)));
+        }
+
+        private enum SystemMetricFlag : int
+        {
+            SM_CXICON = 11,
+            SM_CYICON = 12,
+            SM_CXSMICON = 49,
+            SM_CYSMICON = 50
+        }
+    }
+
+}

src/NotificationFlyout.Shared.UI/NotificationFlyout.Shared.UI.csproj

@@ -0,0 +1,7 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+  </PropertyGroup>
+
+</Project>

src/NotificationFlyout.Uwp.UI.Controls/NotificationFlyout.Uwp.UI.Controls.csproj

@@ -8,11 +8,11 @@
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
   </PropertyGroup>
   <ItemGroup>
-    <Page Include="NotificationFlyoutHost\NotificationFlyoutHost.xaml">
+    <Page Include="NotificationFlyout\NotificationFlyoutHost.xaml">
       <SubType>Designer</SubType>
       <Generator>MSBuild:Compile</Generator>
     </Page>
-    <Page Include="NotificationFlyoutPresenter\NotificationFlyoutPresenter.xaml">
+    <Page Include="NotificationFlyout\NotificationFlyoutPresenter.xaml">
       <SubType>Designer</SubType>
       <Generator>MSBuild:Compile</Generator>
     </Page>

src/NotificationFlyout.Uwp.UI.Controls/NotificationFlyout/NotificationFlyout.cs

@@ -0,0 +1,56 @@
+using System;
+using Windows.UI.Xaml;
+using Windows.UI.Xaml.Media;
+
+namespace NotificationFlyout.Uwp.UI.Controls
+{
+    public class NotificationFlyout : DependencyObject
+    {
+        public static readonly DependencyProperty IconSourceProperty =
+            DependencyProperty.Register(nameof(IconSource),
+                typeof(ImageSource), typeof(NotificationFlyout),
+                new PropertyMetadata(null, OnIconPropertyChanged));
+
+        public static readonly DependencyProperty LightIconSourceProperty =
+          DependencyProperty.Register(nameof(LightIconSource),
+              typeof(ImageSource), typeof(NotificationFlyout),
+                new PropertyMetadata(null, OnIconPropertyChanged));
+
+        public static DependencyProperty ContentProperty =
+            DependencyProperty.Register(nameof(Content),
+                 typeof(UIElement), typeof(NotificationFlyout),
+                 new PropertyMetadata(null));
+
+        internal event EventHandler ContentChanged;
+        internal event EventHandler IconSourceChanged;
+
+        public UIElement Content
+        {
+            get => (UIElement)GetValue(ContentProperty);
+            set => SetValue(ContentProperty, value);
+        }
+
+        public ImageSource IconSource
+        {
+            get => (ImageSource)GetValue(IconSourceProperty);
+            set => SetValue(IconSourceProperty, value);
+        }
+
+        public ImageSource LightIconSource
+        {
+            get => (ImageSource)GetValue(LightIconSourceProperty);
+            set => SetValue(LightIconSourceProperty, value);
+        }
+
+        private static void OnIconPropertyChanged(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs args)
+        {
+            var sender = dependencyObject as NotificationFlyout;
+            sender?.OnIconPropertyChanged();
+        }
+
+        private void OnIconPropertyChanged()
+        {
+            IconSourceChanged?.Invoke(this, EventArgs.Empty);
+        }
+    }
+}

src/NotificationFlyout.Uwp.UI.Controls/Properties/AssemblyInfo.cs

@@ -1,4 +1,5 @@
 using System.Reflection;
+using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
 
 [assembly: AssemblyTitle("NotificationFlyout.Uwp.UI.Controls")]
@@ -11,4 +12,5 @@ using System.Runtime.InteropServices;
 [assembly: AssemblyCulture("")]
 [assembly: AssemblyVersion("1.0.0.0")]
 [assembly: AssemblyFileVersion("1.0.0.0")]
-[assembly: ComVisible(false)]
+[assembly: ComVisible(false)]
+[assembly: InternalsVisibleTo("NotificationFlyout.Wpf.UI.Controls")]

src/NotificationFlyout.Uwp.UI.Controls/Themes/Generic.xaml

@@ -1,6 +1,6 @@
 <ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
     <ResourceDictionary.MergedDictionaries>
-        <ResourceDictionary Source="ms-appx:///NotificationFlyout.Uwp.UI.Controls/NotificationFlyoutHost/NotificationFlyoutHost.xaml" />
+        <ResourceDictionary Source="ms-appx:///NotificationFlyout.Uwp.UI.Controls/NotificationFlyout/NotificationFlyoutHost.xaml" />
-        <ResourceDictionary Source="ms-appx:///NotificationFlyout.Uwp.UI.Controls/NotificationFlyoutPresenter/NotificationFlyoutPresenter.xaml" />
+        <ResourceDictionary Source="ms-appx:///NotificationFlyout.Uwp.UI.Controls/NotificationFlyout/NotificationFlyoutPresenter.xaml" />
     </ResourceDictionary.MergedDictionaries>
 </ResourceDictionary>

src/NotificationFlyout.Uwp.UI/Extensions/ImageSourceExtensions.cs

@@ -0,0 +1,29 @@
+using Microsoft.Windows.Sdk;
+using System;
+using System.Drawing;
+using System.IO;
+using Windows.UI.Xaml.Media;
+using Windows.UI.Xaml.Media.Imaging;
+
+namespace NotificationFlyout.Uwp.UI.Extensions
+{
+    public static class ImageSourceExtensions
+    {
+        public static Icon ConvertToIcon(this ImageSource imageSource, uint dpi)
+        {
+            var bitmapImage = (BitmapImage)imageSource;
+            var uri = $"{AppDomain.CurrentDomain.BaseDirectory}{bitmapImage.UriSour‌​ce}".Replace("ms-appx:///", "").Replace("/", "\\");
+
+            using var stream = File.OpenRead(uri);
+            return new Icon(stream, new Size(PInvoke.GetSystemMetricsForDpi((int)SystemMetricFlag.SM_CXICON, dpi), PInvoke.GetSystemMetricsForDpi((int)SystemMetricFlag.SM_CYICON, dpi)));
+        }
+
+        private enum SystemMetricFlag : int
+        {
+            SM_CXICON = 11,
+            SM_CYICON = 12,
+            SM_CXSMICON = 49,
+            SM_CYSMICON = 50
+        }
+    }
+}

src/NotificationFlyout.Uwp.UI/NativeMethods.txt

@@ -0,0 +1 @@
+GetSystemMetricsForDpi

src/NotificationFlyout.Uwp.UI/NotificationFlyout.Uwp.UI.csproj

@@ -0,0 +1,28 @@
+<Project Sdk="MSBuild.Sdk.Extras">
+  <PropertyGroup>
+    <TargetFrameworks>uap10.0.19041</TargetFrameworks>
+    <Platforms>AnyCPU;x64</Platforms>
+    <EnableTypeInfoReflection>false</EnableTypeInfoReflection>
+    <EnableXBindDiagnostics>false</EnableXBindDiagnostics>
+    <LangVersion>9.0</LangVersion>
+    <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Remove="NotificationFlyout\**" />
+    <EmbeddedResource Remove="NotificationFlyout\**" />
+    <None Remove="NotificationFlyout\**" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Remove="NativeMethods.txt" />
+  </ItemGroup>
+  <ItemGroup>
+    <AdditionalFiles Include="NativeMethods.txt" />
+  </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Windows.CsWin32" Version="0.1.319-beta">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="System.Drawing.Common" Version="5.0.0" />
+  </ItemGroup>
+</Project>

src/NotificationFlyout.Wpf.UI.Controls/NotificationFlyout.Wpf.UI.Controls.csproj

@@ -13,6 +13,7 @@
 
   <ItemGroup>
     <ProjectReference Include="..\NotificationFlyout.Uwp.UI.Controls\NotificationFlyout.Uwp.UI.Controls.csproj" />
+    <ProjectReference Include="..\NotificationFlyout.Uwp.UI\NotificationFlyout.Uwp.UI.csproj" />
     <ProjectReference Include="..\NotificationFlyout.Wpf.UI\NotificationFlyout.Wpf.UI.csproj" />
   </ItemGroup>
 

src/NotificationFlyout.Wpf.UI.Controls/NotificationFlyout/NotificationFlyout.cs

@@ -1,83 +0,0 @@
-using System.Windows;
-using System.Windows.Markup;
-using System.Windows.Media;
-
-namespace NotificationFlyout.Wpf.UI.Controls
-{
-    [ContentProperty(nameof(Content))]
-    public class NotificationFlyout : DependencyObject
-    {
-        public static readonly DependencyProperty IconSourceProperty =
-         DependencyProperty.Register(nameof(IconSource),
-             typeof(ImageSource), typeof(NotificationFlyout),
-             new PropertyMetadata(null, OnIconPropertyChanged));
-
-        public static readonly DependencyProperty LightIconSourceProperty =
-          DependencyProperty.Register(nameof(LightIconSource),
-              typeof(ImageSource), typeof(NotificationFlyout),
-              new PropertyMetadata(null, OnIconPropertyChanged));
-
-        public static DependencyProperty ContentProperty =
-            DependencyProperty.Register(nameof(Content),
-                 typeof(Windows.UI.Xaml.UIElement), typeof(NotificationFlyout),
-                 new PropertyMetadata(null, OnFlyoutPresenterPropertyChanged));
-
-        private readonly NotificationFlyoutXamlHost _xamlHost;
-
-        public NotificationFlyout()
-        {
-            _xamlHost = new NotificationFlyoutXamlHost();
-            _xamlHost.Show();
-        }
-
-        public Windows.UI.Xaml.UIElement Content
-        {
-            get => (Windows.UI.Xaml.UIElement)GetValue(ContentProperty);
-            set => SetValue(ContentProperty, value);
-        }
-
-        public ImageSource IconSource
-        {
-            get => (ImageSource)GetValue(IconSourceProperty);
-            set => SetValue(IconSourceProperty, value);
-        }
-
-        public ImageSource LightIconSource
-        {
-            get => (ImageSource)GetValue(LightIconSourceProperty);
-            set => SetValue(LightIconSourceProperty, value);
-        }
-
-        public void HideFlyout()
-        {
-            _xamlHost.HideFlyout();
-        }
-
-        public void ShowFlyout()
-        {
-            _xamlHost.ShowFlyout();
-        }
-
-        private static void OnFlyoutPresenterPropertyChanged(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs dependencyPropertyChangedEventArgs)
-        {
-            var sender = dependencyObject as NotificationFlyout;
-            sender?.OnFlyoutPresenterPropertyChanged();
-        }
-
-        private static void OnIconPropertyChanged(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs args)
-        {
-            var sender = dependencyObject as NotificationFlyout;
-            sender?.OnIconPropertyChanged();
-        }
-
-        private void OnFlyoutPresenterPropertyChanged()
-        {
-            _xamlHost.SetFlyoutContent(Content);
-        }
-
-        private void OnIconPropertyChanged()
-        {
-            _xamlHost.SetIcons(IconSource, LightIconSource);
-        }
-    }
-}

src/NotificationFlyout.Wpf.UI.Controls/NotificationFlyout/NotificationFlyoutApplication.cs

@@ -0,0 +1,49 @@
+using System.Windows;
+using System.Windows.Markup;
+
+namespace NotificationFlyout.Wpf.UI.Controls
+{
+    [ContentProperty(nameof(Flyout))]
+    public class NotificationFlyoutApplication : DependencyObject
+    {
+        public static DependencyProperty FlyoutProperty =
+            DependencyProperty.Register(nameof(Flyout),
+                typeof(Uwp.UI.Controls.NotificationFlyout), typeof(NotificationFlyoutApplication),
+                new PropertyMetadata(null, OnFlyoutPropertyChanged));
+
+        private readonly NotificationFlyoutXamlHost _xamlHost;
+
+        public NotificationFlyoutApplication()
+        {
+            _xamlHost = new NotificationFlyoutXamlHost();
+            _xamlHost.Show();
+        }
+
+        public Uwp.UI.Controls.NotificationFlyout Flyout
+        {
+            get => (Uwp.UI.Controls.NotificationFlyout)GetValue(FlyoutProperty);
+            set => SetValue(FlyoutProperty, value);
+        }
+
+        public void HideFlyout()
+        {
+            _xamlHost.HideFlyout();
+        }
+
+        public void ShowFlyout()
+        {
+            _xamlHost.ShowFlyout();
+        }
+
+        private static void OnFlyoutPropertyChanged(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs dependencyPropertyChangedEventArgs)
+        {
+            var sender = dependencyObject as NotificationFlyoutApplication;
+            sender?.OnFlyoutPropertyChanged();
+        }
+
+        private void OnFlyoutPropertyChanged()
+        {
+            _xamlHost.SetFlyout(Flyout);
+        }
+    }
+}

src/NotificationFlyout.Wpf.UI.Controls/NotificationFlyout/NotificationFlyoutXamlHost.cs

@@ -1,6 +1,7 @@
 using Microsoft.Toolkit.Wpf.UI.XamlHost;
 using NotificationFlyout.Uwp.UI.Controls;
 using NotificationFlyout.Wpf.UI.Extensions;
+using NotificationFlyout.Uwp.UI.Extensions;
 using NotificationFlyout.Wpf.UI.Helpers;
 using System;
 using System.Windows;
@@ -14,9 +15,8 @@ namespace NotificationFlyout.Wpf.UI.Controls
         private const string ShellTrayHandleName = "Shell_TrayWnd";
         private const double WindowSize = 5;
 
-        private ImageSource _defaultIconSource;
+        private Uwp.UI.Controls.NotificationFlyout _flyout;
         private bool _isLoaded;
-        private ImageSource _lightIconSource;
         private NotificationIconHelper _notificationIconHelper;
         private SystemPersonalisationHelper _systemPersonalisationHelper;
         private TaskbarHelper _taskbarHelper;
@@ -30,13 +30,25 @@ namespace NotificationFlyout.Wpf.UI.Controls
             Loaded += OnLoaded;
         }
 
-        public void SetFlyoutContent(Windows.UI.Xaml.UIElement content)
+        public void SetFlyout(Uwp.UI.Controls.NotificationFlyout flyout)
         {
-            var flyoutHost = GetFlyoutHost();
+            if (_flyout != null)
-            if (flyoutHost != null)
             {
-                flyoutHost.Content = content;
+                _flyout.ContentChanged -= OnFlyoutContentChanged;
+                _flyout.IconSourceChanged -= OnFlyoutIconSourceChanged;
             }
+
+            _flyout = flyout;
+            _flyout.ContentChanged += OnFlyoutContentChanged;
+            _flyout.IconSourceChanged += OnFlyoutIconSourceChanged;
+
+            UpdateFlyoutContent();
+            UpdateIcons();
+        }
+
+        private void OnFlyoutIconSourceChanged(object sender, EventArgs args)
+        {
+            UpdateIcons();
         }
 
         internal void HideFlyout()
@@ -48,14 +60,6 @@ namespace NotificationFlyout.Wpf.UI.Controls
             }
         }
 
-        internal void SetIcons(ImageSource defaultIconSource, ImageSource lightIconSource)
-        {
-            _defaultIconSource = defaultIconSource;
-            _lightIconSource = lightIconSource;
-
-            UpdateIcon();
-        }
-
         internal void ShowFlyout()
         {
             var flyoutHost = GetFlyoutHost();
@@ -82,6 +86,11 @@ namespace NotificationFlyout.Wpf.UI.Controls
             return _xamlHost.GetUwpInternalObject() as NotificationFlyoutHost;
         }
 
+        private void OnFlyoutContentChanged(object sender, EventArgs args)
+        {
+            UpdateFlyoutContent();
+        }
+
         private void OnIconInvoked(object sender, NotificationIconInvokedEventArgs args)
         {
             ShowFlyout();
@@ -95,7 +104,6 @@ namespace NotificationFlyout.Wpf.UI.Controls
             _isLoaded = true;
 
             UpdateWindow();
-            UpdateIcon();
             this.Hidden();
         }
 
@@ -106,7 +114,7 @@ namespace NotificationFlyout.Wpf.UI.Controls
 
         private void OnThemeChanged(object sender, SystemPersonalisationChangedEventArgs args)
         {
-            UpdateIcon();
+            UpdateIcons();
         }
 
         private void PrepareDefaultWindow()
@@ -149,10 +157,29 @@ namespace NotificationFlyout.Wpf.UI.Controls
             Content = _xamlHost;
         }
 
-        private void UpdateIcon()
+        private void UpdateFlyoutContent()
+        {
+            if (_flyout == null) return;
+
+            var content = _flyout.Content;
+            if (content == null) return;
+
+            var flyoutHost = GetFlyoutHost();
+            if (flyoutHost != null)
+            {
+                flyoutHost.Content = content;
+            }
+        }
+
+        private void UpdateIcons()
         {
             if (!_isLoaded) return;
 
+            if (_flyout == null) return;
+
+            var _defaultIconSource = _flyout.IconSource;
+            var _lightIconSource = _flyout.LightIconSource;
+
             var shellTrayHandle = WindowHelper.GetHandle(ShellTrayHandleName);
             if (shellTrayHandle == null) return;
 

src/NotificationFlyout.sln

@@ -14,6 +14,8 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution
 		global.json = global.json
 	EndProjectSection
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NotificationFlyout.Uwp.UI", "NotificationFlyout.Uwp.UI\NotificationFlyout.Uwp.UI.csproj", "{3FE0D7F7-1173-4989-BE6C-AD28FE0D4AC9}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -88,6 +90,26 @@ Global
 		{29430194-7EDE-4C33-AF59-CE121F48F66E}.Release|x64.Build.0 = Release|x64
 		{29430194-7EDE-4C33-AF59-CE121F48F66E}.Release|x86.ActiveCfg = Release|Any CPU
 		{29430194-7EDE-4C33-AF59-CE121F48F66E}.Release|x86.Build.0 = Release|Any CPU
+		{3FE0D7F7-1173-4989-BE6C-AD28FE0D4AC9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{3FE0D7F7-1173-4989-BE6C-AD28FE0D4AC9}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{3FE0D7F7-1173-4989-BE6C-AD28FE0D4AC9}.Debug|ARM.ActiveCfg = Debug|Any CPU
+		{3FE0D7F7-1173-4989-BE6C-AD28FE0D4AC9}.Debug|ARM.Build.0 = Debug|Any CPU
+		{3FE0D7F7-1173-4989-BE6C-AD28FE0D4AC9}.Debug|ARM64.ActiveCfg = Debug|Any CPU
+		{3FE0D7F7-1173-4989-BE6C-AD28FE0D4AC9}.Debug|ARM64.Build.0 = Debug|Any CPU
+		{3FE0D7F7-1173-4989-BE6C-AD28FE0D4AC9}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{3FE0D7F7-1173-4989-BE6C-AD28FE0D4AC9}.Debug|x64.Build.0 = Debug|Any CPU
+		{3FE0D7F7-1173-4989-BE6C-AD28FE0D4AC9}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{3FE0D7F7-1173-4989-BE6C-AD28FE0D4AC9}.Debug|x86.Build.0 = Debug|Any CPU
+		{3FE0D7F7-1173-4989-BE6C-AD28FE0D4AC9}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{3FE0D7F7-1173-4989-BE6C-AD28FE0D4AC9}.Release|Any CPU.Build.0 = Release|Any CPU
+		{3FE0D7F7-1173-4989-BE6C-AD28FE0D4AC9}.Release|ARM.ActiveCfg = Release|Any CPU
+		{3FE0D7F7-1173-4989-BE6C-AD28FE0D4AC9}.Release|ARM.Build.0 = Release|Any CPU
+		{3FE0D7F7-1173-4989-BE6C-AD28FE0D4AC9}.Release|ARM64.ActiveCfg = Release|Any CPU
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