A GtkRecentFilter can be used to restrict the files being shown in a GtkRecentChooser. Files can be filtered based on their name (with gtk_recent_filter_add_pattern()), on their mime type (with gtk_file_filter_add_mime_type()), on the application that has registered them (with gtk_recent_filter_add_application()), or by a custom filter function (with gtk_recent_filter_add_custom()).