GtkRecentChooserWidget is a widget suitable for selecting recently used
files. It is the main building block of a GtkRecentChooserDialog. Most
applications will only need to use the latter; you can use
GtkRecentChooserWidget as part of a larger window if you have special needs.
Note that GtkRecentChooserWidget does not have any methods of its own.
Instead, you should use the functions that work on a GtkRecentChooser.
Recently used files are supported since GTK+ 2.10.