<para>A secondary group appears after the other children if the style is <seecref="P:Gtk.ButtonBoxStyle.Start"/>, <seecref="P:Gtk.ButtonBoxStyle.Spread"/> or <seecref="P:Gtk.ButtonBoxStyle.Edge"/>, and before the the other children if the style is <seecref="P:Gtk.ButtonBoxStyle.End"/>. For horizontal button boxes, the definition of before/after depends on direction of the widget (see <seecref="P:Gtk.Widget.Direction"/>). If the style is <seecref="P:Gtk.ButtonBoxStyle.Start"/> or <seecref="P:Gtk.ButtonBoxStyle.End"/>, then the secondary children are aligned at the other end of the button box from the main children. For the other styles, they appear immediately next to the main children.</para>
</remarks>
</Docs>
</Member>
</Members>
<Docs>
<summary>A child of a <seecref="T:Gtk.ButtonBox"/>, used to interact with its container child properties.</summary>