point: TPoint;
Point := (sender as TStringGrid).ScreenToClient(GetMouseCursorPos);
(sender as TStringGrid).MouseToCell(Point.x, Point.y, col, row);
point: TPoint;
Point := (sender as TStringGrid).ScreenToClient(GetMouseCursorPos);
(sender as TStringGrid).MouseToCell(Point.x, Point.y, col, row);