https://learn.microsoft.com/en-us/dotnet/api/system.windows.contentelement.releasetouchcapture?view=windowsdesktop-10.0
ContentElement.ReleaseTouchCapture(TouchDevice) Method (System.Windows) | Microsoft Learn
Attempts to release the specified touch device from this element.
methodsystemwindowsmicrosoftlearn
https://learn.microsoft.com/fr-fr/dotnet/api/system.windows.input.touchdevice?view=netframework-4.8.1&viewFallbackFrom=windowsdesktop-10.0
TouchDevice Class (System.Windows.Input) | Microsoft Learn
Represents a single touch input produced by a finger on a touchscreen.
class systemwindowsinputmicrosoftlearn