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)


Public Function GetPrimaryTouchPoint ( _
    relativeTo As UIElement _
) As TouchPoint
public TouchPoint GetPrimaryTouchPoint(
    UIElement relativeTo


  • 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 nullNothingnullptra null reference (Nothing in Visual Basic).

Return Value

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


This value can be nullNothingnullptra null reference (Nothing in Visual Basic) if the frame started outside the plug-in area.

Version Information

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0


Windows Phone

See Also


TouchFrameEventArgs Class

System.Windows.Input Namespace