I don’t understand why Cursor.Position is different from MouseEventArgs.Location, they should be the same, don’t they?
Edit: The answer seems to suggest that Cursor.Position== PointToScreen(MouseEventArgs.Location), but my testing indicates otherwise.
MouseEventArgs.Position is the mouse cursor position relative to the control during the event, at the time of the event.
Cursor.Position is the current mouse cursor position relative to the desktop.