The notification to switch a virtual desktop may raise twice. / デスクトップ変更通知が2回来ることがある。

[mntone]

SylphyHorn と VirtualDesktop どちらに書けばいいのか悩んだので，とりあえずこちらに書いておきます。

Depending on how you use VirtualDesktop, apps add changed handler to the notification service twice and receive the same two notifications.
VirtualDesktop の利用方法によっては，変更通知サービスに 2 度登録され，同じ通知を 2 回受け取るようになります。

• Is VirtualDesktop IsSupported? / VirtualDesktop が IsSupported であるか。https://github.com/Grabacr07/SylphyHorn/blob/092739797c40327c157acf3a1cd496cc4a53494a/source/SylphyHorn/Application.xaml.cs#L46

  • VirtualDesktop/source/VirtualDesktop/VirtualDesktop.static.cs

    Line 17 in 9ae33b8

    public static bool IsSupported => GetIsSupported();

    • Initialize the instance as Default. / Default の Instance で初期化される。

      VirtualDesktop/source/VirtualDesktop/VirtualDesktop.static.cs

      Lines 93 to 116 in 9ae33b8

      	internal static bool GetIsSupported()
      	{
      	return _isSupported ?? (_isSupported = Core()).Value;
      	bool Core()
      	{
      	#if DEBUG
      	if (Environment.OSVersion.Version.Major < 10) return false;
      	#endif
      	try
      	{
      	ProviderInternal.Initialize().Wait();
      	}
      	catch (Exception ex)
      	{
      	System.Diagnostics.Debug.WriteLine("VirtualDesktop initialization error:");
      	System.Diagnostics.Debug.WriteLine(ex);
      	return false;
      	}
      	return true;
      	}
      	}

      • VirtualDesktop/source/VirtualDesktop/VirtualDesktopProvider.cs

        Lines 68 to 69 in 6b6a5be

        	internal static VirtualDesktopProvider ProviderInternal
        	=> Provider ?? VirtualDesktopProvider.Default;

      • Initialize
• https://github.com/Grabacr07/SylphyHorn/blob/092739797c40327c157acf3a1cd496cc4a53494a/source/SylphyHorn/Application.xaml.cs#L76
  • Initalize the new instance. / 新しいインスタンスで初期化される。https://github.com/Grabacr07/SylphyHorn/blob/f15b2dbe9fb46efaf649660aece1657525cad940/source/SylphyHorn/ApplicationPreparation.cs#L164-L172

[mattiafedrigotti]

Good morning,
When I change the virtualdesktop, I can have more ChangeDesktopEvent in sequence (i.e. swiping trough more desktops with the touchpad). the successive events after the firts one are raised only when the previous callbacks end.