How to get cursor coordinates when clicking relative to control's local coordinates?

Question

C++ / C#

There is a class inherited from ScrollableControl. When you click inside it, you need to find out the coordinates of the cursor relative to local coordinates (the coordinate system starts from the upper left corner), taking into account the scroll.

Answer 1

public class MyScrollableControl : ScrollableControl
    {
        protected override void OnMouseClick(MouseEventArgs e)
        {
            var local = new Point(e.X - AutoScrollPosition.X,
                                  e.Y - AutoScrollPosition.Y);
            base.OnMouseClick(e);
        }
    }