To apply font to NRichTextLabel you need to set the following property:
To be able to set a mnemonic character you need to switch the TextRenderMode to GDIPlus:
NRichTextLabel.Item.Style.TextRenderMode = TextRenderMode.GdiPlus
Yes, NEntryContainer is NRichTextLabel, so you can set its label to have mnemonic character as described above.
NEntryContainer.Item.Style.TextRenderMode = TextRenderMode.GdiPlus;
I hope this helps.
Nevron Support Team