https://learn.microsoft.com/ko-kr/uwp/api/windows.ui.xaml.controls.swapchainbackgroundpanel?view=winrt-28000
SwapChainBackgroundPanel Class (Windows.UI.Xaml.Controls) - Windows apps | Microsoft Learn
Implements a XAML layout surface target for Microsoft DirectX interoperation scenarios. This panel has some atypical restrictions on its usage within an app...
classwindowsuixamlcontrols