Layout Containers

GtkAlignment - A widget which controls the alignment and size of its child
GtkAspectFrame - A frame that constrains its child to a particular aspect ratio
GtkHBox - A horizontal container box
GtkVBox - A vertical container box
GtkHButtonBox - A container for arranging buttons horizontally
GtkVButtonBox - A container for arranging buttons vertically
GtkFixed - A container which allows you to position widgets at fixed coordinates
GtkHPaned - A container with two panes arranged horizontally
GtkVPaned - A container with two panes arranged vertically
GtkLayout - Infinite scrollable area containing child widgets and/or custom drawing
GtkNotebook - A tabbed notebook container
GtkTable - Pack widgets in regular patterns
GtkExpander - A container which can hide its child