GtkFileChooser can be used in two modes, to select a single file at a
time or to select a set of more than one file. To set this, use
Also, you can configure GtkFileChooser to select files
or folders. Consider a backup program that needs to let the
user select a folder that will be backed up along with its
subfolders. To configure whether GtkFileChooser is used to select
files or folders, use |