https://learn.microsoft.com/en-us/uwp/api/windows.ui.xaml.controls.control.onpointercapturelost?view=winrt-28000
Control.OnPointerCaptureLost(PointerRoutedEventArgs) Method (Windows.UI.Xaml.Controls) - Windows...
Called before the PointerCaptureLost event occurs.
controlmethodwindowsuixaml