//This example prevents the comment from being removed. var comment = new GC.Spread.Sheets.Comments.Comment(); comment.text("new comment!"); comment.backColor("orange"); comment.displayMode(GC.Spread.Sheets.Comments.DisplayMode.alwaysShown); activeSheet.getCell(5,5).comment(comment); activeSheet.bind(GC.Spread.Sheets.Events.CommentRemoving, function (e, info) { info.cancel = true; });