using Infragistics.Win.UltraWinGrid;

    /// <summary>
    /// Uses IUIElementCreationFilter to intercept HeaderUIElements and
    /// reassigns their ToolTipItem property for the purpose of constraining
    /// the tooltip's width.
    /// </summary>
    public class HeaderToolTipWidthConstraint : IUIElementCreationFilter
    {
        public HeaderToolTipWidthConstraint(int maxWidth)
        {
            this.MaxWidth = maxWidth;
        }

        public int MaxWidth
        {
            get;
            private set;
        }

        void IUIElementCreationFilter.AfterCreateChildElements(UIElement parent)
        {
            HeaderUIElement headerElement = parent as HeaderUIElement;
            GroupHeader header =
                headerElement != null ?
                headerElement.Header as GroupHeader :
                null;

            if ( header != null )
                headerElement.ToolTipItem = new ToolTipItem(header.ToolTipText, this.MaxWidth);
        }

        bool IUIElementCreationFilter.BeforeCreateChildElements(UIElement parent)
        {
            return false;
        }

        private class ToolTipItem : IToolTipItem
        {
            public ToolTipItem(string text, int maxWidth)
            {
                this.Text = text;
                this.MaxWidth = maxWidth;
            }

            private string Text
            {
                get;
                set;
            }

            private int MaxWidth
            {
                get;
                set;
            }

            ToolTipInfo IToolTipItem.GetToolTipInfo(
                Point mousePosition,
                UIElement element,
                UIElement previousToolTipElement,
                ToolTipInfo tti)
            {
                tti.ToolTipText = this.Text;
                tti.MaxWidth = this.MaxWidth;
                return tti;
            }
        }
    }