Sdílet prostřednictvím

GestureRecognizer.CanBeDoubleTap(PointerPoint) Method

  • Reference

Definition

Namespace:
Windows.UI.Input
Edit

Identifies whether a tap can still be interpreted as the second tap of a double tap gesture.

public:
 virtual bool CanBeDoubleTap(PointerPoint ^ value) = CanBeDoubleTap;
bool CanBeDoubleTap(PointerPoint const& value);
public bool CanBeDoubleTap(PointerPoint value);
function canBeDoubleTap(value)
Public Function CanBeDoubleTap (value As PointerPoint) As Boolean

Parameters

value
PointerPoint

The last input pointer.

Returns

Boolean

bool

True if a UI element supports the double tap gesture and the time threshold to complete the gesture has not been crossed; otherwise false.

Remarks

This method supports GestureRecognizer object pool management, where GestureRecognizer objects are dynamically assigned to a set of UI elements.

Specifically, GestureRecognizer objects can be recycled for UI elements that do not support or can no longer process a double tap gesture. For example, if CanBeDoubleTap returns true for the most recent PointerPoint, it’s not safe to recycle the GestureRecognizer because a double tap is still a viable interaction based on subsequent input. If CanBeDoubleTap returns false, the GestureRecognizer can be safely recycled.

This method is not required if GestureRecognizer object pool management is not implemented.

Applies to

See also