The ribbon stack panel is implemented by the NRibbonStackPanel class and represents a stack panel that layouts widgets in left to right direction. It is typically used to group a set of widgets with similar functionality (e.g. font style buttons) so that they do not break to several lanes when placed in a ribbon wrap flow panel. In most cases a ribbon separator is placed as the last widget in the ribbon stack panel, so that it gets separated visually from other widgets in the wrap flow panel.

panel = new NRibbonStackPanel();
panel.Add(NRibbonButton.CreateSmall("Decrease Indent", NResources.Image_16x16_paragraph_indent_left_png));
panel.Add(NRibbonButton.CreateSmall("Increase Indent", NResources.Image_16x16_paragraph_indent_right_png));
panel.Add(new NRibbonSeparator());