From 7a730b7a365e665e7b16a29375e75c7587060f4a Mon Sep 17 00:00:00 2001
From: Terry MacDonald <terry.macdonald@cosive.com>
Date: Sun, 20 Dec 2020 12:35:36 +1300
Subject: [PATCH] Register DisplayMagician AUMID with Win10

This registers the Application User Model ID
with Win 10 so that it recognises the application
and can interact with it. This allows Toasts, Taskbar
pinning, right-click menus and other functions to
work.
---
 DisplayMagician/DisplayMagician.csproj |  9 +++++++++
 DisplayMagician/Program.cs             | 16 +++++++++++++++-
 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/DisplayMagician/DisplayMagician.csproj b/DisplayMagician/DisplayMagician.csproj
index 6b069e0..3240975 100644
--- a/DisplayMagician/DisplayMagician.csproj
+++ b/DisplayMagician/DisplayMagician.csproj
@@ -306,6 +306,15 @@
       <Isolated>False</Isolated>
       <EmbedInteropTypes>True</EmbedInteropTypes>
     </COMReference>
+    <COMReference Include="Shell32">
+      <Guid>{50A7E9B0-70EF-11D1-B75A-00A0C90564FE}</Guid>
+      <VersionMajor>1</VersionMajor>
+      <VersionMinor>0</VersionMinor>
+      <Lcid>0</Lcid>
+      <WrapperTool>tlbimp</WrapperTool>
+      <Isolated>False</Isolated>
+      <EmbedInteropTypes>True</EmbedInteropTypes>
+    </COMReference>
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
diff --git a/DisplayMagician/Program.cs b/DisplayMagician/Program.cs
index 8d856c1..675dc08 100644
--- a/DisplayMagician/Program.cs
+++ b/DisplayMagician/Program.cs
@@ -13,6 +13,7 @@ using DisplayMagician.Shared;
 using DisplayMagician.UIForms;
 using System.Text.RegularExpressions;
 using System.Drawing;
+using System.Runtime.InteropServices;
 
 namespace DisplayMagician {
  
@@ -25,7 +26,7 @@ namespace DisplayMagician {
 
     internal static class Program
     {
-
+        internal static string AUMID = "LittleBitBig.DisplayMagician";
         internal static string AppDataPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "DisplayMagician");
         public static string AppIconPath = Path.Combine(Program.AppDataPath, $"Icons");
         public static string AppProfilePath = Path.Combine(Program.AppDataPath, $"Profiles");
@@ -48,6 +49,11 @@ namespace DisplayMagician {
         private static int Main(string[] args)
         {
 
+            // This sets the Application User Model ID to "LittleBitBig.DisplayMagician" so that
+            // Windows 10 recognises the application, and allows features such as Toasts, 
+            // taskbar pinning and similar.
+            SetCurrentProcessExplicitAppUserModelID(AUMID);
+
             // Prepare NLog for logging
             var config = new NLog.Config.LoggingConfiguration();
 
@@ -602,6 +608,14 @@ namespace DisplayMagician {
 
         }
 
+        // Add the ability to set an Application AUMID so that Windows 10+ recognises the
+        // application and things like Toasts, Tasbar pinning and similar functionality
+        // works as intended. This DLL import avoids the need to package the app as an MSIX
+        // or moving to a WiX based installer at this stage, or the need to add this to the
+        // Windows Store.
+        [DllImport("shell32.dll", SetLastError = true)]
+        static extern void SetCurrentProcessExplicitAppUserModelID([MarshalAs(UnmanagedType.LPWStr)] string AppID);
+
     }