void gtk_style_context_set_junction_sides ( GtkStyleContext* context, GtkJunctionSides sides )
Sets the sides where rendered elements (mostly through gtk_render_frame()) will visually connect with other visual elements.
This is merely a hint that may or may not be honored by themes.
Container widgets are expected to set junction hints as appropriate for their children, so it should not normally be necessary to call this function manually.
Sides where rendered elements are visually connected to other elements.