title: Tooltip on Outlook Add-in Ribbon
body: <p>I created a outlook add-in using VSTO 2008. I didn't create a separate ribbon/group for this add-in. Instead VSTO automatically create the add-in button in the built-in Ribbon when Outlook starts.
  Now how do I customize the tooltip of that add-in icon?</p>
  
  <p>Here is the snippet to add label and icon for my add-in</p>
  
  <pre><code>[Microsoft.Office.Tools.Outlook.FormRegionMessageClass("IPM.Note.DougForm")]
      [Microsoft.Office.Tools.Outlook.FormRegionName("Doug.Note.FormTest")]
      public class QMemoRegionFactory : QRegionFactory, Microsoft.Office.Tools.Outlook.IFormRegionFactory
      {
          public DougFormTest()
          {
              this._Manifest.FormRegionName = "DougForm";
              this._Manifest.Icons.Page = global::DougForm.OutlookAddin.Properties.Resources.DougIcon_big;
          }
  ...
  </code></pre>
  
  <p>Thanks</p>