public string? get_filename ()
Gets the filename for the currently selected file in the file selector.
The filename is returned as an absolute path. If multiple files are selected, one of the filenames will be returned at random.
If the file chooser is in folder mode, this function returns the selected folder.
The currently selected filename, or null if no file is selected, or the selected file can't be represented with a local filename. Free with g_free.