UnityEditor.TooltipView.OnGUI C# (CSharp) Method

        private void OnGUI()
        {
            if (this.m_tooltipContainer != null)
            {
                GUI.Box(new Rect(0f, 0f, this.m_optimalSize.x, this.m_optimalSize.y), this.m_tooltip, this.m_Style);
            }
        }