Add taskbar state/progress control api

CollapseLauncher/Classes/Helper/WindowUtility.cs

@@ -10,6 +10,7 @@
 using Hi3Helper.Win32.Native.ManagedTools;
 using Hi3Helper.Win32.Native.Structs;
 using Hi3Helper.Win32.Screen;
+using Hi3Helper.Win32.TaskbarListCOM;
 using Hi3Helper.Win32.ToastCOM.Notification;
 using Microsoft.Graphics.Display;
 using Microsoft.UI;
@@ -21,7 +22,6 @@
 using Microsoft.UI.Xaml.Media;
 using System;
 using System.Collections.Generic;
-using System.Diagnostics.CodeAnalysis;
 using System.Runtime.InteropServices;
 using Windows.Foundation;
 using Windows.Graphics;
@@ -55,6 +55,8 @@ internal static class WindowUtility
         internal static WindowId? CurrentWindowId;
         internal static OverlappedPresenter? CurrentOverlappedPresenter;
 
+        private static readonly TaskbarList Taskbar = new();
+
         internal static DisplayArea? CurrentWindowDisplayArea
         {
             get
@@ -857,5 +859,17 @@ private static void Service_ToastNotificationCallback(string app, string arg, Di
             // TODO: Make the callback actually usable on elevated app
         }
         #endregion
+
+        #region Taskbar Methods
+        public static int SetTaskBarState(nint hwnd, TaskbarState state)
+        {
+            return Taskbar.SetProgressState(hwnd, state);
+        }
+
+        public static int SetProgressValue(nint hwnd, ulong completed, ulong total)
+        {
+            return Taskbar.SetProgressValue(hwnd, completed, total);
+        }
+        #endregion
     }
 }