UIElement.TranslatePoint Method (Point, UIElement)
Translates a point relative to this element to coordinates that are relative to the specified element.
Assembly: PresentationCore (in PresentationCore.dll)
The point value, as relative to this element.
The element to translate the given point into.
Return ValueType: System.Windows.Point
A point value, now relative to the target element rather than this source element.
Passing null for relativeTo is permitted, and indicates that coordinates should be relative to the root element in the logical tree that this element belongs to.
This method is used for translating hit test point values. Calling this method is mainly relevant if you are authoring a control and need to process input at a lower level. If you are using existing controls, you can generally assume that completed controls will report correctly translated hit test results.
Available since 3.0