gtk:file-chooser-current-folder-file (chooser)

chooser -- a gtk:file-chooser widget
file -- a g:file object for the folder

The gtk:file-chooser-current-folder-file function gets the current folder of the file chooser as a g:file object. The (setf gtk:file-chooser-current-folder-file) function sets the current folder. This function returns nil, if the folder could not be changed successfully.

Internal function, see the gtk:file-chooser-current-folder-uri function.