Fix "NotifyIcon" control disappear of taskbar restart

Describe the bug The notify icon disappear of taskbar restart

To Reproduce Steps to reproduce the behavior:

1. The open notify icon with application
2. restart explorer.exe

Expected behavior notify icon disappear

Screenshots None

Environment (please complete the following information):

• .NET 5.0
• Visual Studio 2019
• Version 3.3.8.1

Additional context I tried to use “WM_TASKBARCREATED” message the solve issues

public sealed class TaskbarRebuildBehavior : Behavior<System.Windows.Window>
{
	#region --字段--
	public static readonly DependencyProperty ElementProperty = DependencyProperty.Register ("Element", typeof (UIElement), typeof (TaskbarRebuildBehavior));
	private int taskbarCreated;
	#endregion

	#region --属性--
	/// <summary>
	/// 获取或设置重建的元素
	/// </summary>
	public UIElement Element
	{
		get => (UIElement)this.GetValue (ElementProperty);
		set => this.SetValue (ElementProperty, value);
	}
	#endregion

	#region --公开方法--
	protected override void OnAttached ()
	{
		this.AssociatedObject.Loaded += (sender, e) =>
		{
			this.taskbarCreated = Win32_RegisterWindowMessage ("TaskbarCreated");
			if (PresentationSource.FromVisual (this.AssociatedObject) is HwndSource hwndSource)
			{
				hwndSource.AddHook (this.WndProc);
			}
		};
	}
	#endregion

	#region --私有方法--
	private IntPtr WndProc (IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
	{
		if (msg == this.taskbarCreated)
		{
			this.Element.Visibility = Visibility.Collapsed;
			this.Element.Visibility = Visibility.Visible;
		}
		return IntPtr.Zero;
	}
	#endregion

	#region --API--
	[DllImport ("user32.dll", EntryPoint = "RegisterWindowMessage", CharSet = CharSet.Unicode, SetLastError = true)]
	private static extern int Win32_RegisterWindowMessage (string lpString);
	#endregion
}

[Jie2GG]

so this code will work with hc:Window? or we need to create another class for hc:Window?TaskbarRebuildBehavior : Behavior<System.Windows.Window> TaskbarRebuildBehavior : Behavior<HandyControl.Controls.Window>

You can go directly to hc:Window used.

<hc:Window>
	<hc:NotifyIcon x:Name="NotifyIcon"/>
	<behaviors:Interaction.Behaviors>
		<behavior:TaskbarRebuildBehavior Element="{Binding ElementName=NotifyIcon}" />
	</behaviors:Interaction.Behaviors>
</hc:Window>

[Jie2GG]

@ghost1372 I am checking the this problem