calling [gtk.file_filter.FileFilter.filter]
FileFilter.getNeeded
gtk.types.FileFilterFlags getNeeded()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.
Returns
bitfield of flags indicating needed fields when