| GTK+ 3 Reference Manual | ||||
|---|---|---|---|---|
| Top | Description | Object Hierarchy | Implemented Interfaces | ||||
GObject
+----GInitiallyUnowned
+----GtkWidget
+----GtkContainer
+----GtkBin
+----GtkWindow
+----GtkAlignment
+----GtkComboBox
+----GtkFrame
+----GtkButton
+----GtkMenuItem
+----GtkEventBox
+----GtkExpander
+----GtkHandleBox
+----GtkToolItem
+----GtkOverlay
+----GtkScrolledWindow
+----GtkViewport
The GtkBin widget is a container with just one child. It is not very useful itself, but it is useful for deriving subclasses, since it provides common code needed for handling a single child widget.
Many GTK+ widgets are subclasses of GtkBin, including GtkWindow, GtkButton, GtkFrame, GtkHandleBox or GtkScrolledWindow.