- GtkAdjustment — A representation of an adjustable bounded value
- GtkIMContextSimple — An input method context supporting table-based input methods
- GtkIMMulticontext — An input method context supporting multiple, loadable input methods
- GtkSizeGroup — Grouping widgets so they request the same size
- GtkSnapshot — Auxiliary object for snapshots
- GtkTooltip — Add tips to your widgets
- GtkWidgetPaintable — Drawing a widget elsewhere
- GtkWindowControls — A widget displaying window buttons
- GtkWindowHandle — A titlebar area widget