public void Render()
        {
            if (dragging)
            {
                var min  = new Vector2(Math.Min(startDragPosition.X, currentDragPosition.X), Math.Min(startDragPosition.Y, currentDragPosition.Y));
                var max  = new Vector2(Math.Max(startDragPosition.X, currentDragPosition.X), Math.Max(startDragPosition.Y, currentDragPosition.Y));
                var size = max - min;

                uiManager.DrawBox(min.X, min.Y, size.X, size.Y, new Vector4(0.2f, 0.66f, 1, 0.4f));
            }
        }