Gets the fields that need to be filled in for the #GtkFileFilterInfo passed to gtk.file_filter.FileFilter.filter
This function will not typically be used by applications; it is intended principally for use in the implementation of #GtkFileChooser.
bitfield of flags indicating needed fields when calling gtk.file_filter.FileFilter.filter
Gets the fields that need to be filled in for the #GtkFileFilterInfo passed to gtk.file_filter.FileFilter.filter
This function will not typically be used by applications; it is intended principally for use in the implementation of #GtkFileChooser.