如何使用 UWP 在 Windows 10 中启用壁纸更改过渡？

Question

I can successfully use this code to apply an Image as a wallpaper to Desktop and Lockscreen.

How do I enable Wallpaper change transition (Fade-In and Fade-Out)?

async Task<bool> SetWallpaperAsync(string localAppDataFileName) 
{ 
    bool success = false;
    if (UserProfilePersonalizationSettings.IsSupported())
    {
        var uri = new Uri("ms-appx:///Local/" + localAppDataFileName);
        var file = await StorageFile.GetFileFromApplicationUriAsync(uri);
        var profileSettings = UserProfilePersonalizationSettings.Current;
        success = await profileSettings.TrySetLockScreenImageAsync(file);
    }
    return success;
} 

I need something that works for UWP Applications.

Answer 1

Unfortunately this is not possible in UWP and I don't think the system has this currently itself. When you go into Settings - Personalization and change the wallpaper, you can see the wallpaper also changes immediately. Same things goes for when you have a slideshow set up. On the other hand, if such a smooth transition gets implemented on the OS level, then I am sure the effect will be the same across the board, even when wallpaper is changed from UWP. So it is definitely something worth suggesting in the Windows Feedback Hub.

There are some desktop customization programs that use hacky solutions to display animations or even videos on the desktop, but those are low level and performance-expensive.