UIElement.ManipulationDelta UIElement.ManipulationDelta UIElement.ManipulationDelta UIElement.ManipulationDelta Event

Definition

Occurs when the input device changes position during a manipulation.

public : event ManipulationDeltaEventHandler ManipulationDelta
// Register
event_token ManipulationDelta(ManipulationDeltaEventHandler const& handler) const;

// Revoke with event_token
void ManipulationDelta(event_token const& cookie) const;

// Revoke with event_revoker
ManipulationDelta_revoker ManipulationDelta(auto_revoker_t, ManipulationDeltaEventHandler const& handler) const;
public event ManipulationDeltaEventHandler ManipulationDelta
Public Event ManipulationDeltaEventHandler ManipulationDelta
<uiElement ManipulationDelta="eventhandler"/>

Remarks

An element must have a ManipulationMode value other than None or System to be a manipulation event source. The default value of ManipulationMode is System, which enables built-in control logic to process manipulations, but doesn't permit app code to handle manipulation events. If you want to handle manipulations, set ManipulationMode to All, or to specific ManipulationModes values. For more info, see ManipulationMode.

ManipulationDelta is a routed event. If the event is permitted to bubble up to parent elements because it goes unhandled, then it is possible to handle the event on parent elements even if ManipulationMode is None or System on the parent element. For more info on the routed event concept, see Events and routed events overview.

For touch actions and also for interaction-specific or manipulation events that are consequences of a touch action, an element must be hit-test visible in order to be the event source and fire the event that is associated with the action. UIElement.Visibility must be Visible. Other properties of derived types also affect hit-test visibility. For more info, see Events and routed events overview.

ManipulationDelta supports the ability to attach event handlers to the route that will be invoked even if the event data for the event is marked Handled. See AddHandler.

See Also