UIElement.OnPreviewTouchDown(TouchEventArgs) UIElement.OnPreviewTouchDown(TouchEventArgs) UIElement.OnPreviewTouchDown(TouchEventArgs) UIElement.OnPreviewTouchDown(TouchEventArgs) Method

Definición

Proporciona control de clases para el evento enrutado PreviewTouchDown que se produce cuando una entrada táctil presiona este elemento.Provides class handling for the PreviewTouchDown routed event that occurs when a touch presses this element.

protected:
 virtual void OnPreviewTouchDown(System::Windows::Input::TouchEventArgs ^ e);
protected virtual void OnPreviewTouchDown (System.Windows.Input.TouchEventArgs e);
abstract member OnPreviewTouchDown : System.Windows.Input.TouchEventArgs -> unit
override this.OnPreviewTouchDown : System.Windows.Input.TouchEventArgs -> unit
Protected Overridable Sub OnPreviewTouchDown (e As TouchEventArgs)

Parámetros

e
TouchEventArgs TouchEventArgs TouchEventArgs TouchEventArgs

Objeto TouchEventArgs que contiene los datos del evento.A TouchEventArgs that contains the event data.

Comentarios

El OnPreviewTouchDown método no tiene ninguna implementación predeterminada.The OnPreviewTouchDown method has no default implementation. Invalide OnPreviewTouchDown en una clase derivada para PreviewTouchDown controlar el evento.Override OnPreviewTouchDown in a derived class to handle the PreviewTouchDown event. Asegúrese de llamar al OnPreviewTouchDown método de la clase base para que las clases base reciban el evento.Be sure to call the base class' OnPreviewTouchDown method so that base classes receive the event.

Se aplica a