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public Point TranslatePoint(

	Point point,

	UIElement relativeTo

)

private void OnMouseLeftButtonDown(object sender, MouseButtonEventArgs e)

{

    // Retrieve the coordinate of the mouse position.

    Point pt = e.GetPosition((UIElement)sender);

// Perform the hit test against a given portion of the visual object tree.

    HitTestResult result = VisualTreeHelper.HitTest(myCanvas, pt);
if (result != null)

    {

        // Perform action on hit visual object.

    }

}

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