| Extracted from Pike v7.8 release 866 at 2018-07-18.

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GTK2
GTK2.TreeSortable

# Method GTK2.TreeSortable()->set_default_sort_func()

Method set_default_sort_func

  `GTK2.TreeSortable set_default_sort_func(function f, mixed user_data)`

Description

  Sets the default comparison function used when sorting to be f. If the current sort column id of this sortable is GTK2.TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID, then the model will sort using this function.

  if f is 0, then there will be no default comparison function. This means once the model has been sorted, it can't go back to the default state. In this case, when the current sort column id of this sortable is GTK2.TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID, the model will be unsorted.