Question

I’d like to add a menu item to the default ContextMenu of a RichTextBox.

I could create a new context menu but then I lose the spell check suggestions that show up in the default menu.

Is there a way to add an item without re-implementing everything?

Answer 1

It’s not too tricky to reimplement the RichTextBox context menu with spelling suggestions, Cut, Paste, etc.

Hook up the context menu opening event as follows:

AddHandler(RichTextBox.ContextMenuOpeningEvent, new ContextMenuEventHandler(RichTextBox_ContextMenuOpening), true); 

Within the event handler build the context menu as you need. You can recreate the existing context menu menu items with the following:

 private IList<MenuItem> GetSpellingSuggestions() {     List<MenuItem> spellingSuggestions = new List();     SpellingError spellingError = myRichTextBox.GetSpellingError(myRichTextBox.CaretPosition);     if (spellingError != null)     {         foreach (string str in spellingError.Suggestions)         {             MenuItem mi = new MenuItem();             mi.Header = str;             mi.FontWeight = FontWeights.Bold;             mi.Command = EditingCommands.CorrectSpellingError;             mi.CommandParameter = str;             mi.CommandTarget = myRichTextBox;             spellingSuggestions.Add(mi);         }     }     return spellingSuggestions; }  private IList<MenuItem> GetStandardCommands() {     List<MenuItem> standardCommands = new List();      MenuItem item = new MenuItem();     item.Command = ApplicationCommands.Cut;     standardCommands.Add(item);      item = new MenuItem();     item.Command = ApplicationCommands.Copy;     standardCommands.Add(item);      item = new MenuItem();     item.Command = ApplicationCommands.Paste;     standardCommands.Add(item);      return standardCommands; } 

If there are spelling errors, you can create Ignore All with:

 MenuItem ignoreAllMI = new MenuItem(); ignoreAllMI.Header = 'Ignore All'; ignoreAllMI.Command = EditingCommands.IgnoreSpellingError; ignoreAllMI.CommandTarget = textBox; newContextMenu.Items.Add(ignoreAllMI); 

Add separators as required. Add those to the new context menu’s items, and then add your shiny new MenuItems.

I’m going to keep looking for a way to obtain the actual context menu though, as this is relevant to something I’ll be working on in the near future.