Windows Dev Center

TouchFrameEventArgs.GetPrimaryTouchPoint Method

Returns the primary touch point for the reported frame as a TouchPoint value. The touch point can be evaluated against a coordinate reference point instead of the absolute Windows Phone coordinates.

Namespace:  System.Windows.Input
Assembly:  System.Windows (in System.Windows.dll)

public TouchPoint GetPrimaryTouchPoint(
	UIElement relativeTo
)

Parameters

relativeTo
Type: System.Windows.UIElement
A coordinate reference point that can be used to offset the coordinates of the return value TouchPoint. If you want the reference to be based on Windows Phone absolute coordinates, specify relativeTo as null.

Return Value

Type: System.Windows.Input.TouchPoint
The primary touch point for the reported frame.

This value can be null if the frame started outside the plug-in area.

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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