https://learn.microsoft.com/zh-cn/uwp/api/windows.ui.xaml.input.pointerroutedeventargs.getintermediatepoints?view=winrt-28000
PointerRoutedEventArgs.GetIntermediatePoints(UIElement) Method (Windows.UI.Xaml.Input) - Windows...
Retrieves a collection of PointerPoint objects that represent the pointer history from the last pointer event up to and including the current pointer event....
methodwindowsuixamlinput