Initial import

AvaloniaWhatKey.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AvaloniaWhatKey", "AvaloniaWhatKey\AvaloniaWhatKey.csproj", "{C5D03CA1-1F8C-42DB-BE50-9573D3FF8EE1}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{C5D03CA1-1F8C-42DB-BE50-9573D3FF8EE1}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{C5D03CA1-1F8C-42DB-BE50-9573D3FF8EE1}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{C5D03CA1-1F8C-42DB-BE50-9573D3FF8EE1}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{C5D03CA1-1F8C-42DB-BE50-9573D3FF8EE1}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+EndGlobal

AvaloniaWhatKey/App.axaml

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+<Application xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             x:Class="AvaloniaWhatKey.App">
+    <Application.Styles>
+        <FluentTheme Mode="Light"/>
+    </Application.Styles>
+</Application>

AvaloniaWhatKey/App.axaml.cs

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+using Avalonia;
+using Avalonia.Controls.ApplicationLifetimes;
+using Avalonia.Markup.Xaml;
+
+namespace AvaloniaWhatKey
+{
+    public partial class App : Application
+    {
+        public override void Initialize()
+        {
+            AvaloniaXamlLoader.Load(this);
+        }
+
+        public override void OnFrameworkInitializationCompleted()
+        {
+            if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
+            {
+                desktop.MainWindow = new MainWindow();
+            }
+
+            base.OnFrameworkInitializationCompleted();
+        }
+    }
+}

AvaloniaWhatKey/AvaloniaWhatKey.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+    <PropertyGroup>
+        <OutputType>WinExe</OutputType>
+        <TargetFramework>net6.0</TargetFramework>
+        <Nullable>enable</Nullable>
+        <!--Avalonia doesen't support TrimMode=link currently,but we are working on that https://github.com/AvaloniaUI/Avalonia/issues/6892 -->
+        <TrimMode>copyused</TrimMode>
+        <BuiltInComInteropSupport>true</BuiltInComInteropSupport>
+    </PropertyGroup>
+    <ItemGroup>
+        <None Remove=".gitignore"/>
+    </ItemGroup>
+    <ItemGroup>
+        <!--This helps with theme dll-s trimming.
+        If you will publish your application in self-contained mode with p:PublishTrimmed=true and it will use Fluent theme Default theme will be trimmed from the output and vice versa.
+        https://github.com/AvaloniaUI/Avalonia/issues/5593 -->
+        <TrimmableAssembly Include="Avalonia.Themes.Fluent"/>
+        <TrimmableAssembly Include="Avalonia.Themes.Default"/>
+    </ItemGroup>
+    <ItemGroup>
+        <PackageReference Include="Avalonia" Version="0.10.18"/>
+        <PackageReference Include="Avalonia.Desktop" Version="0.10.18"/>
+        <!--Condition below is needed to remove Avalonia.Diagnostics package from build output in Release configuration.-->
+        <PackageReference Condition="'$(Configuration)' == 'Debug'" Include="Avalonia.Diagnostics" Version="0.10.18"/>
+        <PackageReference Include="XamlNameReferenceGenerator" Version="1.3.4"/>
+    </ItemGroup>
+</Project>

AvaloniaWhatKey/MainWindow.axaml

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+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="500"
+        MinWidth="500" MinHeight="400"
+        Width="900" Height="500"
+        WindowStartupLocation="CenterScreen"
+        x:Class="AvaloniaWhatKey.MainWindow"
+        Title="AvaloniaWhatKey">
+    <DockPanel>
+        <TextBlock Text="Press any key to see Key enum value." 
+                   HorizontalAlignment="Center" 
+                   VerticalAlignment="Center"
+                   FontSize="14"
+                   Margin="12"
+                   Opacity="0.6"
+                   DockPanel.Dock="Bottom" />
+        <Button Content="Copy"
+                Click="CopyButton_OnClick"
+                HorizontalAlignment="Center" 
+                VerticalAlignment="Center"
+                FontSize="14"
+                Margin="12"
+                Opacity="0.6"
+                IsVisible="{Binding !!#GestureText.Text.Length}"
+                DockPanel.Dock="Bottom" />
+        <TextBlock x:Name="GestureText" 
+                   Text="" 
+                   HorizontalAlignment="Center" 
+                   VerticalAlignment="Center"
+                   FontSize="48"
+                   Margin="12"/>
+    </DockPanel>
+</Window>

AvaloniaWhatKey/MainWindow.axaml.cs

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+using System;
+using System.Diagnostics;
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Input;
+using Avalonia.Interactivity;
+
+namespace AvaloniaWhatKey
+{
+    public partial class MainWindow : Window
+    {
+        public MainWindow()
+        {
+            InitializeComponent();
+            
+            AddHandler(KeyDownEvent, OnKeyDown, RoutingStrategies.Tunnel | RoutingStrategies.Bubble);
+        }
+
+        private void OnKeyDown(object? sender, KeyEventArgs e)
+        {
+            var gesture = 
+                (e.KeyModifiers != KeyModifiers.None 
+                    ? e.KeyModifiers.ToString().Replace(", ", "+") + "+" 
+                    : "")
+                + "Key." 
+                + e.Key;
+            GestureText.Text = gesture;
+        }
+
+        private async void CopyButton_OnClick(object? sender, RoutedEventArgs e)
+        {
+            if (Application.Current?.Clipboard is { } clipboard)
+            {
+                try
+                {
+                    await clipboard.SetTextAsync(GestureText.Text);
+                }
+                catch (Exception)
+                {
+                    // ignored
+                }
+            }
+        }
+    }
+}

AvaloniaWhatKey/Program.cs

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+using Avalonia;
+using System;
+
+namespace AvaloniaWhatKey
+{
+    class Program
+    {
+        // Initialization code. Don't use any Avalonia, third-party APIs or any
+        // SynchronizationContext-reliant code before AppMain is called: things aren't initialized
+        // yet and stuff might break.
+        [STAThread]
+        public static void Main(string[] args) => BuildAvaloniaApp()
+            .StartWithClassicDesktopLifetime(args);
+
+        // Avalonia configuration, don't remove; also used by visual designer.
+        public static AppBuilder BuildAvaloniaApp()
+            => AppBuilder.Configure<App>()
+                .UsePlatformDetect()
+                .LogToTrace();
+    }
+}