Ok, so it has a wrapped RichTextBox called mainRTB, which means you can access it by adding this property to the RichTextEditor class
Code:
public RichTextBox MainRTB
{
get { return mainRTB; }
}
and then binding to it like this
Code:
<wpf:RapidSpellAsYouType TextBox="{Binding MainRTB,ElementName=sampleEditor}"></wpf:RapidSpellAsYouType>
where sampleEditor is the RichTextEditor control.
When you do that you will see it underlining as desired, but the contextmenu will be the built in one from RichTextEditor. So you can merge RapidSpell's suggestions with it according to
https://keyoti.com/produ...enu%20Customization.htm
Jim
-your feedback is helpful to other users, thank you!