[ CCode ( type_id = "gtk_layout_child_get_type ()" ) ]
public abstract class LayoutChild : Object
The base class for objects that are meant to hold layout properties.
If a `GtkLayoutManager` has per-child properties, like their packing type, or the horizontal and vertical span, or the icon name, then the layout manager should use a `GtkLayoutChild` implementation to store those properties.
A `GtkLayoutChild` instance is only ever valid while a widget is part of a layout.