FileFilter.addCustom
void addCustom(gtk.types.FileFilterFlags needed, gtk.types.FileFilterFunc func) nothrowAdds rule to a filter that allows files based on a custom callback function. The bitfield needed which is passed in provides information about what sorts of information that the filter function needs; this allows GTK+ to avoid retrieving expensive information when it isn’t needed by the filter.
Parameters
needed | bitfield of flags indicating the information that the custom filter function needs. |
func | callback function; if the function returns true, then the file will be displayed. |