setting is TRUE, pressing Enter in the entry will activate the default
widget for the window containing the entry. This usually means that
the dialog box containing the entry will be closed, since the default
widget is usually one of the dialog buttons.gtkEntrySetActivatesDefault(object, setting)objectGtkEntrysettingTRUE to activate window's default widget on Enter keypresssetting is TRUE, the entry calls
gtkWindowActivateDefault on the window containing the entry, in
the default handler for the gtkWidgetActivate signal.)