Hi,

The inbox ToolTip class and the UltraToolTipManager apply a tooltip to a control.

If you want to apply a tooltip to part of a control, what you would typically do is change the tooltip on the control based on the current location of the mouse. The MouseMove event if usually a good place to do this.

You will also need to force the tooltip to re-display if the user moves from one panel to another without leaving the control. This can be done by keeping track of the last panel for which you displayed a tooltip. Here's some quick sample code.

        private UltraStatusPanel lastMouseMovePanel;
        private void ultraStatusBar1_MouseMove(object sender, MouseEventArgs e)
        {
            UIElement element = this.ultraStatusBar1.UIElement.LastElementEntered;
            
            if (element == null) return;

            UltraStatusPanel panel = element.GetContext(typeof(UltraStatusPanel)) as UltraStatusPanel;
            if (panel == null || panel == this.lastMouseMovePanel)
                return;

            this.lastMouseMovePanel = panel;
            UltraToolTipInfo tooltipInfo = new UltraToolTipInfo("This is panel " + panel.Index, ToolTipImage.None, "Title", DefaultableBoolean.True);
            this.ultraToolTipManager1.SetUltraToolTip(this.ultraStatusBar1, tooltipInfo);
            this.ultraToolTipManager1.ShowToolTip(this.ultraStatusBar1);
        }