How to prevent unwanted tooltip pop-up in Infragistics ComboBoxTool on ribbon control (winforms)

Question

I have a ComboBoxTool on an UltraToolbarsManager implementing a ribbon control. No matter what I set the ToolTipText to it always displays a tooltip:

[e.g. mousing over the gdg combo show this]

I have tried setting all the other tooltip related attributes (ToolTipTextFormatted, ToolTipTitle) to null but this doesn't help.

• If a non-zero length tooltip text is specified then this shows as expected
• The ribbon child controls are all added programatically
• The other controls on the ribbon do not have this issue

I have also tried setting-up a very simple ribbon on a dummy project and that does not exhibit this strange behaviour. So it is something else that is effecting this.

Answer 1

Infragistics supplied an answer:

1. Add your own CreationFilter to the ToolbarsManager

   ultraToolbarsManager1.CreationFilter = new MyCreation();

2. Catch the tool creation and replace the tooltip with your own implementation

   public class MyCreation : IUIElementCreationFilter  {
   
       private readonly int max;
   
       public MyCreation()
       {
       }
   
       public MyCreation(int toolTipMaxWidth)
       {
           max = toolTipMaxWidth;
       }
   
       public void AfterCreateChildElements(UIElement parent)
       {
           parent.ToolTipItem = new MyToolTipItem(max);
       }
   
       public bool BeforeCreateChildElements(UIElement parent)
       {
           return false;
       }
   }
   
   
   public class MyToolTipItem : IToolTipItem   {
       private readonly int max;
   
       public MyToolTipItem(int maxWidth)
       {
           max = maxWidth;
       }
   
       public MyToolTipItem()
       {
       }
   
       public ToolTipInfo GetToolTipInfo(Point mousePosition, UIElement element, UIElement previousToolTipElement,
                                     ToolTipInfo toolTipInfoDefault)
       {
           // set tooltip info for ribbon ApplicationMenuButton
           var app = element as ApplicationMenuButtonUIElement;
           if (app != null)
           {
               var appmenu = ((UltraToolbarsDockAreaUIElement) ((app.Parent).Parent)).ToolbarsManager.Ribbon.ApplicationMenu;
               if (max > 0)
                   toolTipInfoDefault.MaxWidth = max;
               toolTipInfoDefault.Title = appmenu.ToolTipTitle;
   
               string tooltiptex = appmenu.ToolTipText;
               if (!string.IsNullOrEmpty(appmenu.ToolTipTextFormatted))
               {
                   toolTipInfoDefault.ToolTipTextStyle = ToolTipTextStyle.Formatted;
                   tooltiptex = appmenu.ToolTipTextFormatted;
               }
               toolTipInfoDefault.ToolTipText = tooltiptex;
           }
   
           // set tooltip info for tools
           if (element.ToolTipItem != null && UIElement.IsContextOfType(element.GetContext(), typeof (ToolBase)))
           {
               var tool = (ToolBase) element.GetContext(typeof (ToolBase));
               var loc = tool.ToolbarsManager.DockWithinContainer.PointToScreen(new Point(0, 0));
           loc.Offset(tool.UIElement.Rect.Location.X, 185);
   
               if (max > 0)
                   toolTipInfoDefault.MaxWidth = max;
           toolTipInfoDefault.Title = tool.SharedProps.ToolTipTitle;
           string tooltiptex = tool.SharedProps.ToolTipText;
               if (!string.IsNullOrEmpty(tool.SharedProps.ToolTipTextFormatted))
               {
                   toolTipInfoDefault.ToolTipTextStyle = ToolTipTextStyle.Formatted;
                   tooltiptex = tool.SharedProps.ToolTipTextFormatted;
               }
               toolTipInfoDefault.ToolTipText = tooltiptex;
               toolTipInfoDefault.DisplayStyle = Infragistics.Win.ToolTipDisplayStyle.Office2007;
               toolTipInfoDefault.Location = loc;
           }
           return toolTipInfoDefault;
       }
   

Required a bit of tweaking to get the tooltip in the right place and pick-up the tooltip text from TooltipTextResolved.