https://learn.microsoft.com/fr-fr/dotnet/api/system.windows.iinputelement.previewstylusmove?view=netframework-4.8.1&viewFallbackFrom=windowsdesktop-9.0
IInputElement.PreviewStylusMove Event (System.Windows) | Microsoft Learn
Occurs when the stylus moves while the stylus is over the element.
event systemwindowsmicrosoftlearn