GetPrimaryTouchPoint Method
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TouchFrameEventArgs.GetPrimaryTouchPoint Method

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

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)

'Declaration
Public Function GetPrimaryTouchPoint ( _
	relativeTo As UIElement _
) As TouchPoint

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 Nothing.

Return Value

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

This value can be Nothing 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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