GTK+ Reference Manual | ||||
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GObject +----GInitiallyUnowned +----GtkObject +----GtkWidget +----GtkContainer +----GtkBin +----GtkWindow +----GtkAlignment +----GtkFrame +----GtkButton +----GtkItem +----GtkComboBox +----GtkEventBox +----GtkExpander +----GtkHandleBox +----GtkToolItem +----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, and GtkScrolledWindow.